Publications (20)
Debiased albedo distribution for Near Earth Objects
Alessandro Morbidelli, Marco Delbo, Mikael Granvik +5
We extend the most recent orbital and absolute magnitude Near Earth Object (NEO) model (Granvik et al., 2018) to provide a statistical description of NEO geometric albedos. Our mod…
The Zwicky Transient Facility: System Overview, Performance, and First Results
Eric C. Bellm, Shrinivas R. Kulkarni, Matthew J. Graham +112
The Zwicky Transient Facility (ZTF) is a new optical time-domain survey that uses the Palomar 48-inch Schmidt telescope. A custom-built wide-field camera provides a 47 deg fiel…
The Zwicky Transient Facility: Science Objectives
Matthew J. Graham, S. R. Kulkarni, Eric C. Bellm +114
The Zwicky Transient Facility (ZTF), a public-private enterprise, is a new time domain survey employing a dedicated camera on the Palomar 48-inch Schmidt telescope with a 47 deg$^2…
A Large Outburst, Coma Asymmetries, and the Color of Comet 243P/NEAT
Michael S. P. Kelley, Silvia Protopapa, Dennis Bodewits +16
Water ice is a fundamental building material of comets and other bodies in the outer solar system. Yet, the properties of cometary water ice are challenging to study, due to its vo…
The Luminous, Slow-Rising Orphan Afterglow AT2019pim as a Candidate Moderately Relativistic Outflow
Daniel A. Perley, Anna Y. Q. Ho, Michael Fausnaugh +34
Classical gamma-ray bursts (GRBs) have two distinct emission episodes: prompt emission from ultrarelativistic ejecta and afterglow from shocked circumstellar material. While both c…
The Main-Belt Comets: The Pan-STARRS1 Perspective
Henry H. Hsieh, Larry Denneau, Richard J. Wainscoat +17
We analyze 760475 observations of 333026 main-belt objects obtained by the Pan-STARRS1 (PS1) survey telescope between 2012 May 20 and 2013 November 9, a period during which PS1 dis…
Discovery and confirmation of the shortest gamma ray burst from a collapsar
Tomas Ahumada, Leo P. Singer, Shreya Anand +54
Gamma-ray bursts (GRBs) are among the brightest and most energetic events in the universe. The duration and hardness distribution of GRBs has two clusters, now understood to reflec…
The splitting of double-component active asteroid P/2016 J1 (PANSTARRS)
Fernando Moreno, Francisco Pozuelos, Bojan Novakovic +20
We present deep imaging observations, orbital dynamics, and dust tail model analyses of the double-component asteroid P/2016 J1 (J1-A and J1-B). The observations were acquired at t…
Optical follow-up of the neutron star-black hole mergers S200105ae and S200115j
Shreya Anand, Michael W. Coughlin, Mansi M. Kasliwal +46
LIGO and Virgo's third observing run (O3) revealed the first neutron star-black hole (NSBH) merger candidates in gravitational waves. These events are predicted to synthesize r-pro…
Sublimation-Driven Activity in Main-Belt Comet 313P/Gibbs
Henry H. Hsieh, Olivier Hainaut, Bojan Novakovic +15
We present an observational and dynamical study of newly discovered main-belt comet 313P/Gibbs. We find that the object is clearly active both in observations obtained in 2014 and…
Multiple Outbursts of Asteroid (6478) Gault
Quanzhi Ye, Michael S. P. Kelley, Dennis Bodewits +12
Main-belt asteroid (6478) Gault unexpectedly sprouted two tails in late 2018 and early 2019, identifying it as a new active asteroid. Here we present observations obtained by the 1…
Debiased orbit and absolute-magnitude distributions for near-Earth objects
Mikael Granvik, Alessandro Morbidelli, Robert Jedicke +6
The debiased absolute-magnitude and orbit distributions as well as source regions for near-Earth objects (NEOs) provide a fundamental frame of reference for studies of individual N…
Kilonova Luminosity Function Constraints based on Zwicky Transient Facility Searches for 13 Neutron Star Mergers
Mansi M. Kasliwal, Shreya Anand, Tomas Ahumada +100
We present a systematic search for optical counterparts to 13 gravitational wave (GW) triggers involving at least one neutron star during LIGO/Virgo's third observing run. We searc…
Detecting Earth's Temporarily-Captured Natural Satellites - Minimoons
Bryce Bolin, Robert Jedicke, Mikael Granvik +7
We present a study on the discoverability of temporarily captured orbiters (TCOs) by present day or near-term anticipated ground-based and space-based facilities. TCOs (Granvik et…
The Pan-STARRS Moving Object Processing System
Larry Denneau, Robert Jedicke, Tommy Grav +41
We describe the Pan-STARRS Moving Object Processing System (MOPS), a modern software package that produces automatic asteroid discoveries and identifications from catalogs of trans…
Estimates of Rotation Periods for Jupiter Trojans with the Zwicky Transient Facility Photometric Lightcurves
Zhuofu Li, Yasin A. Chowdhury, Željko IveziÄ +12
We present new rotational period estimates for 216 Jupiter Trojans using photometric data from the Zwicky Transient Facility (ZTF), including 80 Trojans with previously unknown per…
Towards Efficient Detection of Small Near-Earth Asteroids Using the Zwicky Transient Facility (ZTF)
Quanzhi Ye, Frank J. Masci, Hsing Wen Lin +23
We describe ZStreak, a semi-real-time pipeline specialized in detecting small, fast-moving near-Earth asteroids (NEAs) that is currently operating on the data from the newly-commis…
Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - preliminary results
Peter Vereš, Robert Jedicke, Alan Fitzsimmons +14
We present the results of a Monte Carlo technique to calculate the absolute magnitudes (H) and slope parameters (G) of about 240000 asteroids observed by the Pan-STARRS1 telescope…
Fast algorithms for slow moving asteroids: constraints on the distribution of Kuiper Belt Objects
Peter J. Whidden, J. Bryce Kalmbach, Andrew J. Connolly +11
We introduce a new computational technique for searching for faint moving sources in astronomical images. Starting from a maximum likelihood estimate for the probability of the det…
Astreaks: Astrometry of NEOs with trailed background stars
Kritti Sharma, Harsh Kumar, Harsh Choudhary +7
The detection and accurate astrometry of fast-moving near-Earth objects (NEOs) has been a challenge for the follow-up community. Their fast apparent motion results in streaks in si…