117 citations · 770 across the 30 of their papers we have counts for
33 papers
Three New Likely Spider Millisecond Pulsar Binaries and Optical Kinematic Tracers of Intrabinary Shocks
Jay Strader, Rebecca Kyer, Laura Chomiuk +9
We report the discovery of three candidate spider millisecond pulsars via multi-wavelength follow-up of unassociated Fermi Large Area Telescope gamma-ray sources. All have optical…
Radio Observations of a Candidate Redback Millisecond Pulsar: 1FGL J0523.5-2529
O. A. Johnson, E. F. Keane, D. J. McKenna +4
Redback pulsars are a subclass of millisecond pulsar system with a low-mass non-degenerate companion star being ablated by the pulsar. They are of interest due to the insights they…
PSR J1947-1120: A New Huntsman Millisecond Pulsar Binary
Jay Strader, Paul S. Ray, Ryan Urquhart +11
We present the discovery of PSR J1947-1120, a new huntsman millisecond pulsar with a red giant companion star in a 10.3 d orbit. This pulsar was found via optical, X-ray, and radio…
Mass estimates from optical modelling of the new TRAPUM redback PSR J1910-5320
O. G. Dodge, R. P. Breton, C. J. Clark +17
Spider pulsars continue to provide promising candidates for neutron star mass measurements. Here we present the discovery of PSR~J19105320, a new millisecond pulsar discovered i…
Multi-Wavelength Observations Of A New Redback Millisecond Pulsar 4FGL J1910.7-5320
Ka-Yui Au, Jay Strader, Samuel J. Swihart +9
We present the study of multi-wavelength observations of an unidentified Fermi Large Area Telescope (LAT) source, 4FGL J1910.7-5320, a new candidate redback millisecond pulsar bina…
A New Flaring Black Widow Candidate and Demographics of Black Widow Millisecond Pulsars in the Galactic Field
Samuel J. Swihart, Jay Strader, Laura Chomiuk +4
We present the discovery of a new optical/X-ray source likely associated with the Fermi -ray source 4FGL J1408.6-2917. Its high-amplitude periodic optical variability, large spe…
The ASAS-SN Bright Supernova Catalog -- V. 2018-2020
K. D. Neumann, T. W. -S. Holoien, C. S. Kochanek +55
We catalog the 443 bright supernovae discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) in along with the 519 supernovae recovered by ASAS-SN and 516 a…
1RXH J082623.6-505741: a new long-period cataclysmic variable with an evolved donor and a low mass transfer rate
Kirill V. Sokolovsky, Jay Strader, Samuel J. Swihart +13
We report the discovery of 1RXH J082623.6-505741, a 10.4 hr orbital period compact binary. Modeling extensive optical photometry and spectroscopy reveals a K-t…
UGPS J194310+183851: an Unusual Optical and X-ray Faint Cataclysmic Variable?
C. Morris, T. J. Maccarone, P. W. Lucas +7
The growing number of multi-epoch optical and infrared sky surveys are uncovering unprecedented numbers of new variable stars, of an increasing number of types. The short interval…
A Gamma-ray Pulsar Timing Array Constrains the Nanohertz Gravitational Wave Background
M. Ajello, W. B. Atwood, L. Baldini +129
After large galaxies merge, their central supermassive black holes are expected to form binary systems whose orbital motion generates a gravitational wave background (GWB) at nanoh…
Gamma-ray Eclipses and Orbital Modulation Transitions in the Candidate Redback 4FGL J1702.7-5655
R. H. D. Corbet, L. Chomiuk, J. B. Coley +8
Observations with the Fermi Large Area Telescope (LAT) of the gamma-ray source 4FGL J1702.7-5655, previously classified as a candidate millisecond pulsar, show highly-significant m…
Discovery, Timing, and Multiwavelength Observations of the Black Widow Millisecond Pulsar PSR J1555-2908
Paul S. Ray, Lars Nieder, Colin J. Clark +21
We report the discovery of PSR J1555-2908, a 1.79 ms radio and gamma-ray pulsar in a 5.6 hr binary system with a minimum companion mass of 0.052 . This fast and energetic…
4FGL J1120.0-2204: A Unique Gamma-ray Bright Neutron Star Binary with an Extremely Low Mass Proto-White Dwarf
Samuel J. Swihart, Jay Strader, Elias Aydi +5
We have discovered a new X-ray emitting compact binary that is the likely counterpart to the unassociated Fermi-LAT GeV -ray source 4FGL J1120.0-2204, the second brightest Fermi…
Multiwavelength evidence for a new flare-mode transitional millisecond pulsar
Jay Strader, Samuel J. Swihart, Ryan Urquhart +7
We report the discovery of a new low-mass X-ray binary near the center of the unassociated Fermi GeV gamma-ray source 4FGL J0540.0-7552. The source shows the persistent presence of…
The Loudest Stellar Heartbeat: Characterizing the most extreme amplitude heartbeat star system
T. Jayasinghe, C. S. Kochanek, J. Strader +16
We characterize the extreme heartbeat star system MACHO 80.7443.1718 in the LMC using TESS photometry and spectroscopic observations from the Magellan Inamori Kyocera Echelle (MIKE…
Discovery of a New Redback Millisecond Pulsar Candidate: 4FGL J0940.3-7610
Samuel J. Swihart, Jay Strader, Elias Aydi +3
We have discovered a new candidate redback millisecond pulsar binary near the center of the error ellipse of the bright unassociated Fermi-LAT -ray source 4FGL J0940.3-7610. The…
Identifying Candidate Optical Variables Using Gaia Data Release 2
Shion Andrew, Samuel J. Swihart, Jay Strader
Gaia is undertaking a deep synoptic survey of the Galaxy, but photometry from individual epochs has, as of yet, only been released for a minimal number of sources. We show that it…
Early spectral evolution of classical novae: consistent evidence for multiple distinct outflows
E. Aydi, L. Chomiuk, L. Izzo +18
The physical mechanism driving mass ejection during a nova eruption is still poorly understood. Possibilities include ejection in a single ballistic event, a common envelope intera…
A New Candidate Transitional Millisecond Pulsar in the Sub-luminous Disk State: 4FGL J0407.7--5702
Jessie M. Miller, Samuel J. Swihart, Jay Strader +7
We report the discovery of a variable optical and X-ray source within the error ellipse of the previously unassociated Fermi Large Area Telescope -ray source 4FGL J0407.7--5702.…
The MAVERIC Survey: New compact binaries revealed by deep radio continuum observations of the Galactic globular cluster Terzan 5
Ryan Urquhart, Arash Bahramian, Jay Strader +12
Owing to its massive, dense core, Terzan 5 has the richest population of millisecond pulsars known among Galactic globular clusters. Here we report new deep GHz radio contin…
The Swift Bulge Survey: optical and near-IR follow-up featuring a likely symbiotic X-ray binary & a focused wind CV
A. W. Shaw, C. O. Heinke, T. J. Maccarone +13
The nature of very faint X-ray transients (VFXTs) - transient X-ray sources that peak at luminosities - is poorly understood. The faint and of…
A New Likely Redback Millisecond Pulsar Binary with a Massive Neutron Star: 4FGL J2333.1--5527
Samuel J. Swihart, Jay Strader, Ryan Urquhart +7
We present the discovery of a likely new redback millisecond pulsar binary associated with the \emph{Fermi} -ray source 4FGL J2333.1--5527. Using optical photometric and spectro…
The Most Rapidly Declining Type I Supernova 2019bkc/ATLAS19dqr
Ping Chen, Subo Dong, M. D. Stritzinger +21
We report observations of the hydrogen-deficient supernova (SN) 2019bkc/ATLAS19dqr. With B- and r-band decline between peak and 10 days post peak of Delta m_10(B)=5.24+/-0.07 mag a…
Flaring, Dust Formation, And Shocks In The Very Slow Nova ASASSN-17pf (LMCN 2017-11a)
E. Aydi, L. Chomiuk, J. Strader +25
We present a detailed study of the 2017 eruption of the classical nova ASASSN-17pf (LMCN 2017-11a), which is located in the Large Magellanic Cloud, including data from AAVSO, ASAS-…