First Results from the Catalina Real-time Transient Survey

Abstract

We report on the results from the first six months of the Catalina Real-time Transient Survey (CRTS). In order to search for optical transients with timescales of minutes to years, the CRTS analyses data from the Catalina Sky Survey which repeatedly covers twenty six thousand of square degrees on the sky. The CRTS provides a public stream of transients that are bright enough to be followed up using small telescopes. Since the beginning of the survey, all CRTS transients have been made available to astronomers around the world in real-time using HTML tables, RSS feeds and VOEvents. As part of our public outreach program the detections are now also available in KML through Google Sky. The initial discoveries include over 350 unique optical transients rising more than two magnitudes from past measurements. Sixty two of these are classified as supernovae, based on light curves, prior deep imaging and spectroscopic data. Seventy seven are due to cataclysmic variables (only 13 previously known), while an additional 100 transients were too infrequently sampled to distinguish between faint CVs and SNe. The remaining optical transients include AGN, Blazars, high proper motions stars, highly variable stars (such as UV Ceti stars) and transients of an unknown nature. Our results suggest that there is a large population of SNe missed by many current supernova surveys because of selection biases. These objects appear to be associated with faint host galaxies. We also discuss the unexpected discovery of white dwarf binary systems through dramatic eclipses.

19 pages, submitted ApJ

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• AGILE detection of a candidate gamma-ray precursor to the ICECUBE-160731 neutrino event
• First results from GeMS/GSAOI for project SUNBIRD: Supernovae UNmasked By Infra-Red Detection
• Gaia Data Release 3: Microlensing Events from All Over the Sky
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• The Gaia spectrophotometric standard stars survey - III. Short-term variability monitoring
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• Multiwavelength periodicity search in a sample of $\gamma$-ray bright blazars
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• A binary counterpart for 2FGL J2039.6-5620
• Classifying Unidentified X-ray Sources in the Chandra Source Catalog Using a Multiwavelength Machine-learning Approach
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• The Bochum Survey of the Southern Galactic Disk: II. Follow-up measurements and multi-filter photometry for 1323 square degrees monitored in 2010-2015
• A Trip to the Cataclysmic Binary Zoo: Detailed Follow-Up of 35 Recently-Discovered Systems
• A Hydrogen-Poor Superluminous Supernova with Enhanced Iron-Group Absorption: A New Link Between SLSNe and Broad-Lined Type Ic SNe
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• The ZTF Source Classification Project: II. Periodicity and variability processing metrics
• Five New Outbursting AM CVn Systems Discovered by the Palomar Transient Factory
• TOI-1468: A system of two transiting planets, a super-Earth and a mini-Neptune, on opposite sides of the radius valley
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• SweetSpot: Near-Infrared Observations of Thirteen Type Ia Supernovae from a New NOAO Survey Probing the Nearby Smooth Hubble Flow
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• OGLE Atlas of Classical Novae. II. Magellanic Clouds
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• A multi-wavelength investigation of candidate milli-second pulsars in unassociated $\gamma$-ray sources
• Search for gamma-ray emission from super-luminous supernovae with the Fermi-LAT
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• K2 Ultracool Dwarfs Survey I: Photometry of an L Dwarf Superflare
• The Type I Superluminous Supernova PS16aqv: Lightcurve Complexity and Deep Limits on Radioactive Ejecta in a Fast Event
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• Untangling Optical Emissions of the Jet and Accretion Disk in the Flat-Spectrum Radio Quasar 3C 273 with Reverberation Mapping Data
• Constraining FeLoBAL outflows from absorption line variability
• LAMOST J0140355+392651: An evolved cataclysmic variable donor transitioning to become an extremely low mass white dwarf
• SDSS J075101.42+291419.1: A Super-Eddington Accreting Quasar with Extreme X-ray Variability
• The Vanishing & Appearing Sources during a Century of Observations project: I. USNO objects missing in modern sky surveys and follow-up observations of a "missing star"
• Caltech-NRAO Stripe 82 Survey (CNSS) Paper V: AGNs that transitioned to radio-loud state
• An irregular discrete time series model to identify residuals with autocorrelation in astronomical light curves
• Multi-wavelength observations of a new redback millisecond pulsar candidate: 3FGL J0954.8-3948
• High-Time-Resolution Photometry of AR Scorpii: Confirmation of the White Dwarf's Spin-Down
• A Hybrid Algorithm for Period Analysis from Multi-band Data with Sparse and Irregular Sampling for Arbitrary Light Curve Shapes
• An independent test of the photometric selection of white dwarf candidates using LAMOST DR3
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• The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma rays
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• On the AGN Nature of Broad Balmer Emission in Four Low-Redshift Metal-Poor Galaxies
• WISE view of Narrow-Line Seyfert 1 galaxies: mid-infrared color and variability
• Rare finding of a 100 kpc large double-lobed radio galaxy hosted in the Narrow Line Seyfert 1 galaxy SDSS J103024.95+551622.7
• SCP06F6: A carbon-rich extragalactic transient at redshift z~0.14?
• Luminous Type II supernovae for their low expansion velocities
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• Optical Transient Object Classification in Wide Field Small Aperture Telescopes with Neural Networks
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• Extreme variability in an active galactic nucleus: Gaia16aax
• The First Release of the AST3-1 Point Source Catalogue from Dome A, Antarctica
• Confirmed short periodic variability of subparsec supermassive binary black hole candidate Mrk 231
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• Photoionization-driven Absorption Lines Variability in Balmer Absorption Line Quasar LBQS 1206+1052
• NuSTAR Observations of Intrinsically X-ray Weak Quasar Candidates: An Obscuration-Only Scenario
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• Milky Way archaeology using RR Lyrae and type II Cepheids II. High velocity RR Lyrae stars, and mass of the Milky Way
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• Recurring tidal disruption events a decade apart in IRAS F01004-2237
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• Long-term follow-up observations of extreme coronal line emitting galaxies
• Using Gaussian processes to model light curves in the presence of flickering: the eclipsing cataclysmic variable ASASSN-14ag
• The High Cadence Transient Survey (HITS): Compilation and characterization of light-curve catalogs
• Evidence that short period AM CVn systems are diverse in outburst behaviour
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• A luminous dust-obscured Tidal Disruption Event candidate in a star forming galaxy at 42 Mpc
• Follow-up Studies of Five Cataclysmic Variable Candidates Discovered by LAMOST
• Spectroscopic Orbital Periods for 29 Cataclysmic Variables from the Sloan Digital Sky Survey
• A brown dwarf donor and an optically thin accretion disc with a complex stream impact region in the period-bouncer candidate BW Sculptoris
• High-speed photometry of faint cataclysmic variables - VIII. Targets from the Catalina Real-time Transient Survey
• Characterising eclipsing white dwarf M dwarf binaries from multi-band eclipse photometry
• On the Use of Field RR Lyrae as Galactic Probes. V. Optical and radial velocity curve templates
• Caltech-NRAO Stripe 82 Survey (CNSS). IV. The Birth of Radio-loud Quasar 013815+00
• Two new AM Canum Venaticorum binaries from the Sloan Digital Sky Survey III
• Return of the King: Time-Series Photometry of FO Aquarii's Initial Recovery from its Unprecedented 2016 Low State
• Minute-cadence Observations of the LAMOST Fields with the TMTS: I. Methodology of Detecting Short-period Variables and Results from the first-year Survey
• XMM-Newton observations of eleven intermediate polars and possible candidates
• Analysis of a Kepler Light Curve of the Novalike Cataclysmic Variable KIC 8751494
• MeerCRAB: MeerLICHT Classification of Real and Bogus Transients using Deep Learning
• Multiple Wavelength Variability and Quasi-Periodic Oscillation of PMN J0948+0022
• Identification of Young Stellar Variables with KELT for K2 II: The Upper Scorpius Association
• Optical Precursors to Black Hole X-ray Binary Outbursts: An evolving synchrotron jet spectrum in Swift J1357.2-0933
• Milky Way archaeology using RR Lyrae and type II Cepheids I. The Orphan stream in 7D using RR Lyrae stars
• Photospheric Velocity Gradients and Ejecta Masses of Hydrogen-poor Superluminous Supernovae -- Proxies for Distinguishing between Fast and Slow Events
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• The Time-Domain Spectroscopic Survey: Understanding the Optically Variable Sky with SEQUELS in SDSS-III
• CC Sculptoris: A superhumping intermediate polar
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• SN 2015as: A low luminosity Type IIb supernova without an early light curve peak
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• A Panchromatic Survey of Post-starburst Mergers: searching for feedback
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• Mysterious, Variable, and Extremely Hot: White Dwarfs Showing Ultra-High Excitation Lines I. Photometric Variability
• Hot Subdwarf All Southern Sky Fast Transit Survey with the Evryscope
• The AM CVn binary SDSS J173047.59+554518.5
• Optical observations of "hot" novae returning to quiescence
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• $Fermi$-LAT detection of a transient $\gamma$-ray source in the direction of a distant blazar B3 1428+422 at $z=4.72$
• The detection of radio emission from known X-ray flaring star EXO 040830-7134.7
• Extreme Variability in a Broad Absorption Line Quasar
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• Orbital periods of cataclysmic variables identified by the SDSS. IX. NTT photometry of eight eclipsing and three magnetic systems
• A New Approach for Measuring Power Spectra and Reconstructing Time Series in Active Galactic Nuclei
• Identification of new cataclysmic variables in the 1RXS and USNO-B1.0 catalogs
• Machine Learning for Transient Recognition in Difference Imaging With Minimum Sampling Effort
• Broad absorption line disappearance/emergence in multiple ions in a weak emission-line quasar
• ANTARES: A Prototype Transient Broker System
• Local Active Galactic Nuclei with Large Broad-Hα Variability Reside in Red Galaxies
• Long-term photometric monitoring and spectroscopy of the white dwarf pulsar AR Scorpii
• The Nucleus of the Planetary Nebula EGB 6 as a Post-Mira Binary
• Multi-Wavelength Observations Of A New Redback Millisecond Pulsar 4FGL J1910.7-5320
• The CARMENES search for exoplanets around M dwarfs Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
• SALT long-slit spectroscopy of CTS C30.10: two-component Mg II line
• Modeling the time variable spectral energy distribution of the blazar CTA 102 from 2008 to 2022
• Properties of long-term optical variability of active galactic nuclei with double-peaked broad low-ionization emission lines
• The peculiar case of the "double-humped" super-luminous supernova SN2006oz
• An Automated tool to detect variable sources in the Vista Variables in the V\'ıa Láctea Survey. The VVV Variables (V${}^4$) catalog of tiles d001 and d002
• The Palomar Transient Factory Sky2Night programme
• Rapidly varying Mg II broad absorption line in SDSS J133356.02+001229.1
• Cataclysmic Variables in the Second Year of the Zwicky Transient Facility
• The 26.3-hr orbit and multi-wavelength properties of the "redback" millisecond pulsar PSR J1306-40
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• Reliable Identification of Binary Supermassive Black Holes from Rubin Observatory Time-Domain Monitoring
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• OT J075418.7+381225 and OT J230425.8+062546: Promising Candidates for the Period Bouncer
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• Unveiling the Nature of SN 2011fh: a Young and Massive Star Gives Rise to a Luminous SN 2009ip-like Event
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• The zenithal 4-m International Liquid Mirror Telescope: a unique facility for supernova studies
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• Long-term photometric variations in the candidate white-dwarf pulsar AR Scorpii from K2, CRTS, and ASAS-SN observations
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• Identification of SRGt 062340.2-265715 as a bright, strongly variable, novalike cataclysmic variable
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• A 3pi Search for Planet Nine at 3.4 microns with WISE and NEOWISE
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• The effect of phased recurrent units in the classification of multiple catalogs of astronomical lightcurves
• Determination of pulsation periods and other parameters of 2875 stars classified as MIRA in the All Sky Automated Survey (ASAS)
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• High velocity blue-shifted FeII absorption in the dwarf star-forming galaxy PHL293B: Evidence for a wind driven supershell?
• Coronal properties of the Seyfert 1 galaxy 3C 120 with NuSTAR
• Discovery of a pre-cataclysmic binary with unusual chromaticity of the eclipsed white dwarf by the GPX Survey
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• Minute-Cadence Observations of the LAMOST Fields with the TMTS: II. Catalogues of Short-Period Variable Stars from the First Two-Year Surveys
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• The flat-spectrum radio quasar 3C 345 from the high to the low emission state
• The Catalina Real-time Transient Survey
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• TXS 1206+549: a new $\gamma$-ray detected narrow-line Seyfert 1 galaxy at redshift 1.34?
• Mrk 1239: a Type-2 Counterpart of Narrow-line Seyfert-1?
• A long-period pre-ELM system discovered from LAMOST medium-resolution survey
• A 3.8yr optical quasi-periodic oscillations in blue quasar SDSS J132144+033055 through combined light curves from CSS and ZTF
• The radius inflation problem in short-period low-mass binaries: a large sample analysis
• The fall of CSS100217: a tidal disruption-induced low state in an apparently hostless active galactic nucleus
• Video Observations of Tiny Near-Earth Objects with Tomo-e Gozen
• An optimal Mars Trojan asteroid search strategy
• Exploratory Spectroscopy of Magnetic Cataclysmic Variables Candidates and Other Variable Objects II
• Strong and Rapid X-ray Variability of the Super-Eddington Accreting Quasar SDSS J081456.10+532533.5
• Nine New Cataclysmic Variable Stars with Negative Superhumps
• Neglected X-ray discovered polars: III. RX J0154.0-5947, RX J0600.5-2709, RX J0859.1+0537, RX J0953.1+1458, and RX J1002.2-1925
• Supernovae without host galaxy? - Hypervelocity stars in foreign galaxies
• A Catalogue of Ultracompact Mass-Transferring White Dwarf Binaries
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• Narrow Absorption Lines Complex. III. Gradual Transition from Type S to Type N Broad Absorption Line
• Photometry and Polarimetry of 2010 XC${}_{15}$: Observational Confirmation of E-type Near-Earth Asteroid Pair
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• The SuperWASP catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect candidates
• Characterization of Dwarf Novae Using SDSS Colors
• A Comprehensive K2 and Ground-Based Study of CRTS J035905.9+175034, an Eclipsing SU UMa System with a Large Mass Ratio
• Two new magnetic cataclysmic variables discovered in the 3XMM catalogue
• Optical and Infrared Photometry of the Nearby SN 2017cbv
• The Evolved Main-Sequence Channel: HST and LBT observations of CSS120422:111127+571239
• SNhunt151: an explosive event inside a dense cocoon
• The Binary Dwarf Carbon Star SDSS J125017.90+252427.6
• Results of a systematic search for outburst events in 1.4 million galaxies
• Searching for Axion-Like Particles from Core-Collapse Supernovae with Fermi LAT's Low Energy Technique
• SDSS J162520.29+120308.7 - a new SU UMa star in the period gap
• Detached eclipsing binaries from the Kepler field: radii and photometric masses of components in short-period systems
• A New Luminous blue variable in the outskirt of the Andromeda Galaxy
• The Identification of RR Lyrae and Delta Scuti Stars from Variable GALEX Ultraviolet Sources
• Massive Double White Dwarfs and the AM CVn Birthrate
• SDSS J154751.94+025550 with double-peaked broad Hβbut single-peaked broad Hα: a candidate for central binary black hole system?
• System parameters of three short period cataclysmic variable stars
• SN 2014ab: An Aspherical Type IIn Supernova with Low Polarization
• Using Close White Dwarf + M Dwarf Stellar Pairs to Constrain the Flare Rates in Close Stellar Binaries
• A Mid-infrared Flare in the Active Galaxy MCG-02-04-026: Dust Echo of a Nuclear Transient Event
• Multi-wavelength flare observations of the blazar S5 1803+784
• 4FGL J1120.0-2204: A Unique Gamma-ray Bright Neutron Star Binary with an Extremely Low Mass Proto-White Dwarf
• Periodic Variable Star Classification with Deep Learning: Handling Data Imbalance in an Ensemble Augmentation Way
• Tilted discs in six poorly studied cataclysmic variables
• An extremely hot white dwarf with a rapidly rotating K-type subgiant companion: UCAC2 46706450
• Spectroscopy of the enigmatic short-period cataclysmic variable IR Com in an extended low state
• SDSS J1058+5443: A blue quasar does not have optical/NUV broad emission lines
• Understanding of the properties of neural network approaches for transient light curve approximations
• Systematic research of low redshift optically selected SDSS Type-2 AGN but with apparent long-term optical variabilities from Catalina Sky Survey, I: data sample and basic results
• Chandra Observations of Abell 2261 Brightest Cluster Galaxy, a Candidate Host to a Recoiling Black Hole
• ASAS-SN 13cl : A Newly-Discovered Cataclysmic Binary with an Anomalously Warm Secondary
• Investigating the evolution of the dual AGN system ESO~509-IG066
• Spectroscopic Studies of 30 Short-period Cataclysmic Variable Stars, and Remarks on the Evolution and Population of Similar Objects
• Spectroscopic and Photometric Observations of Dwarf Nova Superoutbursts by the 3.8 m Telescope Seimei and the Variable Star Network
• In search of short gamma-ray burst optical counterpart with the Zwicky Transient Facility
• The period analysis of V418 Aql, SU Boo, RV CVn, CR Cas, GV Cyg, V432 Per, and BD+42 2782
• X-ray and optical observations of four polars
• MASTER OT J132104.04+560957.8: A Polar with Absorption-Emission Line Reversals
• TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el
• DM Ori: A Young Star Occulted by a Disturbance in its Protoplanetary Disk
• Semi-Supervised Classification and Clustering Analysis for Variable Stars
• The Art of Data Science
• Followup Observations of SDSS and CRTS Candidate Cataclysmic Variables II
• The Hubble Catalog of Variables (HCV)
• YY Hya and its interstellar environment
• Machine Learning based search for Cataclysmic Variables within Gaia Science Alerts
• Spectral and Spin Measurement of Two Small and Fast-Rotating Near-Earth Asteroids
• Multi-wavelength Variation Phenomena of PKS 0735+178 on Diverse Timescale
• Functional PCA with Covariate Dependent Mean and Covariance Structure
• Multiwavelength analysis and the C IV λ1549 Å emission line behavior from 2008 to 2020 of the FSRQ B2 1633+382
• Double-Mode Radial Pulsations among RR Lyrae Stars
• Probabilistic Cross-Identification of Cosmic Events
• AGN types and unification model
• The Evryscope Fast Transient Engine: Real-Time Detection for Rapidly Evolving Transients
• Luminous Optical and X-ray Flaring of the Putative Redback Millisecond Pulsar 1FGL J0523.5$-$2529
• Identifying RR Lyrae in the ZTF DR3 dataset
• An optimized Method to Identify RR Lyrae stars in the SDSS X Pan-STARRS1 Overlapping Area Using a Bayesian Generative Technique
• A time domain experiment with Swift: monitoring of seven nearby galaxies
• Double-lined M dwarf eclipsing binaries from Catalina Sky Survey and LAMOST
• Discovery of Metastable He I* $\lambda$10830 Mini-broad Absorption Lines and Very Narrow Paschen $\alpha$ Emission Lines in the ULIRG Quasar IRAS F11119+3257
• The first study of 54 new eccentric eclipsing binaries in our Galaxy
• BG Tri an example of a low inclination RW Sex-type novalike
• Pre-Discovery Observations of Disrupting Asteroid P/2010 A2
• ASASSN-14cc: Likely Helium Analog of RZ Leonis Minoris
• Cataclysmic Variables in the SUPERBLINK Proper Motion Survey
• Understanding the extreme luminosity of DES14X2fna
• A rapidly declining transient discovered with Subaru/Hyper Suprime-Cam
• Cyclotron emitting magnetic white dwarfs in post common envelope binaries discovered with the Zwicky Transient Facility
• CC Sculptoris: Eclipsing SU UMa-Type Intermediate Polar
• Constraints on the rate of supernovae lasting for more than a year from Subaru/Hyper Suprime-Cam
• X-ray and ultraviolet observations of the eclipsing cataclysmic variables OV Bootis and SDSS J103533.02+055158.3 with degenerate donors
• Multicolor light curves simulations of Population III core-collapse supernovae: from shock breakout to ${}^{56}$Co decay
• A large, long-lived structure near the trojan L5 point in the post common-envelope binary SDSS J1021+1744
• Identifying Candidate Optical Variables Using Gaia Data Release 2
• A candidate of binary black hole system in AGN with broad Balmer emission lines having quite different line widths
• The DECam Minute Cadence Survey I
• Discovery of a new extreme changing-state quasar with 4 mag variation, SDSS J125809.31+351943.0
• Comprehensive analysis of southern eclipsing systems with pulsating components: The cases of HM Pup, V632 Sco and TT Vel
• The Nature of Luminous Quasars with Very Large C IV Equivalent Widths
• Three Cases of Optical Periodic Modulation in Active Galactic Nuclei
• New Candidates for AM Canum Venaticorum Stars among ASAS-SN Transients
• The Fast Evolving, Tremendous and Blue Superoutburst in ASASSN-21au Reveals a Dichotomy in the Outbursts of Long-period AM CVns
• Connecting the time domain community with the Virtual Astronomical Observatory
• Automated classification of eclipsing binary systems in the VVV Survey
• LTD064402+245919: A Subgiant with a 1-3 M${}_{\odot }$ Undetected Companion Identified from LAMOST-TD Data
• A catalogue of candidate milli-parsec separation massive black hole binaries from long term optical photometric monitoring
• SALT long-slit spectroscopy of HE 0435-4312: fast displacement in the Mg II emission line
• An Asymmetric Eclipse Seen Towards the Pre-Main Sequence Binary System V928 Tau
• OAO/MITSuME Photometry of Dwarf Novae. II. HV Virginis and OT J012059.6+325545
• Relation between the X-ray and Optical Luminosities in Binary Systems with Accreting Nonmagnetic White Dwarfs
• Remote Observatory for Variable Object Research (ROVOR)
• An Extremely Luminous Flare Recorded from a Supermassive Black Hole
• Long-term variability of the composite galaxy SDSS J103911-000057: A candidate of true Type-2 AGN
• A Newborn AGN in a Starforming Galaxy
• New Galactic $\beta$ Lyrae-type Binaries Showing Superorbital Photometric Cycles
• Light-time effect detected in fourteen eclipsing binaries
• Discovery of deep eclipses in the cataclysmic variable IPHAS J051814.33+294113.0
• Variable Star Signature Classification using Slotted Symbolic Markov Modeling
• Detecting long-period variability in SDSS Stripe 82 standards catalog
• Optical observations and cyclops post-shock region modelling of the polar V348 Pav
• Very Large Array imaging rules out precessing radio jets in three DES$-$SDSS-selected candidate periodic quasars
• An Optical Study of Two VY Sculptoris-Type Cataclysmic Binary Stars: V704 And and RX J2338+431
• OAO/MITSuME Photometry of Dwarf Novae. III. CSS130418:174033+414756
• Variability search in M 31 using Principal Component Analysis and the Hubble Source Catalog
• XMM-Newton and TESS observations of the highly variable polar V496 UMa
• The physical constraints on a new LoBAL QSO at z=4.82
• Investigation of faint galactic carbon stars from the first Byurakan spectral survey. III. Infrared characteristics
• A magnitude-limited catalogue of unresolved white dwarf-main sequence binaries from Gaia DR3
• Forecasting Supernova Observations with the CSST: I. Photometric Samples
• Broadband spectral and temporal study of Ton 599 during the brightest January 2023 flare
• Confirmation of two magnetic cataclysmic variables as polars: 1RXS J174320.1-042953 and YY Sex
• Superhumps in the cataclysmic variable BG Tri
• Medium-band observation of the neutrino emitting blazar, TXS 0506+056
• Spectroscopic monitoring of the candidate tidal disruption event in F01004-2237
• Optical Studies of 8 AM Herculis-Type Cataclysmic Variable Stars
• Automated Transient Detection with Shapelet Analysis in Image-subtracted Data
• A systematic study of spiral density waves in the accretion discs of Cataclysmic Variables
• CSS091109:035759+102943 - a candidate polar
• Discovery, observations and modelling of a new eclipsing polar: MASTER OT J061451.70-272535.5
• Clumpy dust rings around non-accreting young stars
• High-speed photometry of faint cataclysmic variables - IX. Targets from multiple transient surveys
• A catalogue of oxygen-rich pulsating giants in the galactic halo and the Sagittarius stream
• Long-term Periodicities of Cataclysmic Variables with Synoptic Surveys
• Around Gaia Alerts in 20 questions
• Cataclysmic Variables from USNO-B1.0 Catalog: Stars with Outbursts on Infrared Palomar Plates
• Remarkably high mass and high velocity dispersion of molecular gas associated with a regular, absorption-selected type-I quasar
• Variability and transient search in the SUDARE-VOICE field: a new method to extract the light curves
• Optical polarization of stellar-fed active and quiescent supermassive black holes
• Determination of the superoutburst cycle lengths of 206 SU UMa type dwarf novae
• Early Identification of Optical Tidal Disruption Events: A science module for the Fink broker
• A plausible (overlooked) super-luminous supernova in the SDSS Stripe 82 data
• Dust Reverberation Mapping and Light-Curve Modelling of Zw229-015
• An Intercomparison Study of Two Proximate Damped Ly$\alpha$ Systems with Residual Flux upon the Ly$\alpha$ Absorption Trough toward Quasars
• Third Nearest WZ Sge-Type Dwarf Nova candidate ASASSN-14dx Classified on the Basis of Gaia Data Release 2
• New Clues to the Evolution of Dwarf Carbon Stars From Their Variability and X-ray Emission
• PTF1 J085713+331843, a new post common-envelope binary in the orbital period gap of cataclysmic variables
• NSV 1907 - A new eclipsing, nova-like cataclysmic variable
• Search strategies for Trojan asteroids in the inner Solar System
• CSS_J154915.7+375506: A low-mass-ratio marginal contact binary system with a hierarchical third body
• The first Palomar Gattini-IR catalog of J-band light curves: construction and public data release
• Deep Co-Added Sky from Catalina Sky Survey Images
• A Systematic Search for Active Galactic Nucleus Flares in ZTF Data Release 23
• A Precision Multi-Band Two-Epoch Photometric Catalog of 44 Million Sources in the Northern Sky from Combination of the USNO-B and Sloan Digital Sky Survey Catalogs
• Automated Real-Time Classification and Decision Making in Massive Data Streams from Synoptic Sky Surveys
• Processing GOTO data with the Rubin Observatory LSST Science Pipelines I : Production of coadded frames
• Strongly lensed candidates from the HSC transient survey
• Nine years of multi-frequency monitoring of the blazar PKS 0048-097: spectral and temporal variability
• Removing Atmospheric Fringes from Zwicky Transient Facility i-Band Images using Principal Component Analysis
• Low-mass and sub-stellar eclipsing binaries in stellar clusters
• On the possible contributions of two nearby blazars to the NGC 4151 neutrino hotspot
• Decade-long periodicity study of 2FHL blazars with historical optical data
• Two-point correlation function studies for the Milky Way: discovery of spatial clustering from disk excitations and substructure
• A multiwavelength study of the flat spectrum radio-quasar NVSS J141922-083830 covering four flaring episodes
• RR Lyrae Stars In Stellar Streams with Gaia: The Escapers
• VHE $\gamma$-ray discovery and multi-wavelength study of the blazar 1ES 2322-409
• A photometric study of two contact binaries: CRTS J025408.1+265957 and CRTS J012111.1+272933
• A detailed study of the barium central star of the planetary nebula Abell 70
• Polarimetric and spectroscopic study of radio-quiet weak emission line quasars
• Mapping the accretion disc of the short period eclipsing binary SDSS J0926+3624
• PM J03338+3320: Long-Period Superhumps in Growing Phase Following a Separate Precursor Outburst
• Spectral and Photometric Monitoring of Distant Core-Collapse Supernovae in the SAO RAS
• The 2175 Å~ Bump Features in FeLoBAL Quasars: One Indicator of MW-like Dust in the Nuclear Region of Quasar
• Towards Rate Estimation for Transient Surveys I: Assessing Transient Detectability and Volume Sensitivity for iPTF
• A Double-lined M-dwarf Eclipsing Binary from CSSxSDSS
• An Accretion Flare Interpretation for the Ultra-High-Energy Neutrino Event KM3-230213A
• Transient behavior of three SU UMa-type dwarf novae; AR Pic, QW Ser and V521 Peg
• The rare extended radio-loud narrow-line Seyfert 1 galaxy SDSS J1030+5516 at high resolution
• Discovery of a giant radio outburst of the narrow-line Seyfert 1 galaxy SDSS J110546.07+145202.4
• Exploring the Time Domain With Synoptic Sky Surveys
• On the Use of Field RR Lyrae as Galactic Probes -- VIII. Early Formation of the Galactic Spheroid
• Very-high-energy gamma-ray detection and long-term multi-wavelength view of the flaring blazar B2 1811+31
• A fork in the Sagittarius trailing debris
• Constraining the ratio of median pixel optical depth profile around z ~ 4 quasars using the longitudinal proximity effect
• On the interchange of alternating-amplitude pulsation cycles
• The Gravitational-wave Optical Transient Observer (GOTO): prototype performance and prospects for transient science
• New Cataclysmic Variable 1RXS J073346.0+261933 in Gemini
• Real Time Classification of Transient Events in Synoptic Sky Surveys
• Controlling Outlier Contamination In Multimessenger Time-domain Searches For Supermasssive Binary Black Holes
• Multi-wavelength observations of the BL Lac object Fermi J1544-0649: one year after its awakening
• A Flaring AGN In a ULIRG candidate in Stripe 82
• AT2020ohl: its nature and probable implications
• About 300 days optical quasi-periodic oscillations in the long-term light curves of the blazar PKS 2155-304
• The broad band SEDs of four 'hypervariable' AGN
• The activity of the post-nova V1363 Cyg on long timescales
• Optical characterization of two cataclysmic variables: RBS 0490 and SDSS J075939.79+191417.3
• The Fifth Edition of the General Catalogue of Variable Stars: Experiences in the Constellation of Centaurus
• Challenging the disk instability model: I -- The case of YZ LMi
• Survey-Wide Asteroid Discovery with a High-Performance Computing Enabled Non-Linear Digital Tracking Framework
• AGN in the ULIRG HE 0435-5304
• Cataclysmic Variable Candidates Identified in eROSITA-DE DR1,XMM-Newton, Swift, and ROSAT Catalogs
• Photometry of the eclipsing cataclysmic variable SDSS J152419.33+220920.0
• Absolute dimensions of the low-mass eclipsing binary system NSVS 10653195
• SDSSJ1156-0207: A 0.54 M_sun + 0.19 M_sun Double-lined M Dwarf Eclipsing Binary System
• Detection of quasars in the time domain
• Multi-epoch variability of AT 2000ch (SN 2000ch) in NGC 3432 -- A radio continuum and optical study
• Light-curve analysis and shape models of NEAs 7335, 7822, 154244 and 159402
• The VAO Transient Facility
• Intra-night optical variability and radio characteristics of extremely radio-loud narrow-line Seyfert 1 galaxies
• OT J002656.6+284933 (CSS101212:002657+284933): An SU UMa-Type Dwarf Nova with Longest Superhump Period
• Possibilities of Using Middle-Band Filters to Search for Polar Candidates
• FindPOTATOs: Minor Planet Observation Linking Software
• A study on late time UV-emission in core collapse supernovae and the implications for the peculiar transient AT2018cow
• Radio Variability in Recently-Quenched Galaxies: The Impact of TDE or AGN Driven Outflows
• The ensemble broad-frequency power spectrum of Stripe-82 quasars from multiple surveys
• A Radio Changing-state Jet in the Narrow-line Seyfert 1 Galaxy J1105+1452
• Gaia20fnr: A binary-lens microlensing event with full orbital motion revealed by four space telescopes
• eROSITA-selection of new period-bounce Cataclysmic Variables: First follow-up confirmation using TESS and SDSS
• The New Status Qvo? SN 2021qvo is Another 2003fg-like Type Ia Supernova with a Rising Light-Curve Bump
• Identification spectra of several Northern Hemisphere CV candidates
• Atacama Cosmology Telescope: Observations of supermassive black hole binary candidates. Strong sinusoidal variations at 95, 147 and 225 GHz in PKS 2131$-$021 and PKS J0805$-$0111
• Optimizing the hunt for extraterrestrial high-energy neutrino counterparts
• Multiwavelength Catalog of 10,000 4XMM-DR13 Sources with Known Classifications
• Using two point correlation functions to understand the assembly histories of Milky Way-like galaxies
• A Search for recurrent novae among Far Eastern guest stars
• Blueshifted hydrogen emission and shock wave of RR Lyrae variables in SDSS and LAMOST
• First systematic high-precision survey of bright supernovae I. Methodology for identifying early bumps
• Rate of Repeating Tidal Disruption Events with 5--19 years interval
• A long-term multiwavelength study of the flat spectrum radio quasar OP 313
• Binary black hole signatures in polarized light curves
• Variable Red Giants Exploration with MASTER Robotic Net: Main Algorithms and Study of Three Mira-type Targets
• SDSS J153231.80+420342.7: a triple black hole candidate with a close binary black hole
• Deeper analysis of Fermi-LAT unassociated 4FGL J2112.5-3043 for possible identification
• First analysis of eight Algol-type binaries: EI Aur, XY Dra, BP Dra, DD Her, VX Lac, WX Lib, RZ Lyn, and TY Tri
• VarWISE: Infrared Variability via NEOWISE Single Exposure Photometry
• The spectral Petersen diagram as a new tool to map pulsation modes in variable stars
• Late-time evolution of the interacting stripped-envelope supernova 2017dio
• Radio and X-ray flux rebrightening six years after outburst in a partially-obscured extreme changing-look AGN
• The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release
• Impact of Baseline, Cadence, and Host Contamination on AGN Variability Metrics: A Systematic Study with ZTF
• Discovery and analysis of three magnetic hot subdwarf stars: evidence for merger-induced magnetic fields
• PTF1J2224+17: a short-period, high-field polar
• The HADS Star CSS_J102714.3+205943: a Component of a Binary System with an Elliptic Orbit?
• Determination of Light Curve Parameters of Poorly Studied Eclipsing Variables Using Data from Tess and Other Sky Surveys
• The possible long-term periodic variability of the extremely luminous quasar WISE J090924.01+000211.1
• Full-frame data reduction method: a data mining tool to detect the potential variations in optical photometry
• The Recurrent Nova U Scorpii from the 2010.1 to 2022.4 Eruptions; the Missed Eruption of 2016.78 +- 0.10 and the Critical Complex Period Changes
• The Unusual Weak-Line Quasar PG1407+265 and its Foreground z~0.7 X-ray Cluster
• X-ray and Optical Analysis of the Prototype Polar AN UMa
• Multi wavelength study of 4C+28.07