Search Results - "Boyd, Patricia T."
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The Kepler Light Curves of AGN: A Detailed Analysis
Published in The Astrophysical journal (20-04-2018)“…We present a comprehensive analysis of 21 light curves of Type 1 active galactic nuclei (AGN) from the Kepler spacecraft. First, we describe the necessity and…”
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Chandra, HST/STIS, NICER, Swift, and TESS Detail the Flare Evolution of the Repeating Nuclear Transient ASASSN -14ko
Published in The Astrophysical journal (01-07-2023)“…Abstract ASASSN-14ko is a nuclear transient at the center of the AGN ESO 253−G003 that undergoes periodic flares. Optical flares were first observed in 2014 by…”
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Simultaneous Multiwavelength Flare Observations of EV Lacertae
Published in The Astrophysical journal (01-11-2021)“…We present the first results of our ongoing project conducting simultaneous multiwavelength observations of flares on nearby active M dwarfs. We acquired data…”
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A Multiwavelength Survey of Nearby M Dwarfs: Optical and Near-ultraviolet Flares and Activity with Contemporaneous TESS, Kepler/K2, Swift, and HST Observations
Published in The Astrophysical journal (01-08-2024)“…Abstract We present a comprehensive multiwavelength investigation into flares and activity in nearby M dwarf stars. We leverage the most extensive…”
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GRB 060313: A New Paradigm for Short-Hard Bursts?
Published in The Astrophysical journal (10-11-2006)“…We report the simultaneous observations of the prompt emission in the gamma-ray and hard X-ray bands by the Swift BAT and the Konus-Wind instruments of the…”
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The Rapid X-Ray and UV Evolution of ASASSN-14ko
Published in The Astrophysical journal (01-02-2022)“…Abstract ASASSN-14ko is a recently discovered periodically flaring transient at the center of the active galactic nucleus (AGN) ESO 253−G003 with a slowly…”
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Unusual Black Hole Binary LMC X-3: A Transient High-mass X-Ray Binary That Is Almost Always On?
Published in The Astrophysical journal (01-11-2017)“…We have analyzed a rich, multimission, multiwavelength data set from the black hole X-ray binary (BHXB) LMC X-3, covering a new anomalous low state (ALS),…”
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Evidence for Binarity and Possible Disk Obscuration in Kepler Observations of the Pulsating RV Tau Variable DF Cygni
Published in The Astrophysical journal (10-04-2017)“…The Kepler light curve of DF Cyg is unparalleled in precision and cadence for any RV Tau star to date, spanning a baseline of ∼4 years and clearly displaying…”
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Transit timings variations in the three-planet system: TOI-270
Published in Monthly notices of the Royal Astronomical Society (01-03-2022)“…ABSTRACT We present ground- and space-based photometric observations of TOI-270 (L231-32), a system of three transiting planets consisting of one super-Earth…”
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THE Be/X-RAY BINARY SWIFT J1626.6–5156 AS A VARIABLE CYCLOTRON LINE SOURCE
Published in The Astrophysical journal (01-01-2013)“…Swift J1626.6-5156 is a Be/X-ray binary that was in outburst from 2005 December until 2008 November. We have examined Rossi X-ray Timing Explorer/Proportional…”
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Multiwavelength Observations of the RV Tauri Variable System U Monocerotis: Long-term Variability Phenomena That Can Be Explained by Binary Interactions with a Circumbinary Disk
Published in The Astrophysical journal (01-03-2021)“…We present an X-ray through submillimeter observations of the classical RV Tauri(RVb-type)variable U Mon, apost-asymptotic giant branch(AGB)binary with a…”
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ANOMALOUS LOW STATES AND LONG-TERM VARIABILITY IN THE BLACK HOLE BINARY LMC X-3
Published in The Astrophysical journal (10-09-2012)“…Rossi X-ray Timing Explorer observations of the black hole binary LMC X-3 reveal an extended very low X-ray state lasting from 2003 December 13 until 2004…”
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A Close-in Puffy Neptune with Hidden Friends: The Enigma of TOI 620
Published in The Astronomical journal (01-06-2022)“…Abstract We present the validation of a transiting low-density exoplanet orbiting the M2.5 dwarf TOI 620 discovered by the NASA Transiting Exoplanet Survey…”
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The swift ultra-violet/optical telescope
Published in Space science reviews (01-10-2005)“…The Ultra-Violet/Optical Telescope (UVOT) is one of three instruments flying aboard the Swift Gamma-ray Observatory. It is designed to capture the early (1…”
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The TESS Mission Target Selection Procedure
Published in Publications of the Astronomical Society of the Pacific (01-09-2021)“…We describe the target selection procedure by which stars are selected for 2 minute and 20 s observations by TESS. We first list the technical requirements of…”
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Measuring the Mass of 4U 0900−40 Dynamically
Published in Publications of the Astronomical Society of the Pacific (01-03-2006)“…Accurate measurements of neutron star masses are needed to constrain the equation of state of neutron star matter—of importance to both particle physics and…”
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X-Ray and Ultraviolet Orbital Phase Dependence in LMC X-3
Published in The Astrophysical journal (10-07-2001)Get full text
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Very Early Optical Afterglows of Gamma-Ray Bursts: Evidence for Relative Paucity of Detection
Published in The Astrophysical journal (01-12-2006)“…Very early observations with the Swift satellite of g-ray burst (GRB) afterglows reveal that the optical component is not detected in a large number of cases…”
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GRB 060607A: a gamma-ray burst with bright asynchronous early X-ray and optical emissions
Published in Monthly notices of the Royal Astronomical Society (21-03-2008)“…The early optical emission of the moderately high redshift (2 = 3.08) GRB 060607A shows a remarkable broad and strong peak with a rapid rise and a relatively…”
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The Long-Term Light Curves of X-Ray Binaries Contain Simultaneous Periodic and Random Components
Published in The Astrophysical journal (10-09-2004)“…LMC X-3 and Cyg X-2 show large-amplitude X-ray fluctuations that have been attributed to a warped accretion disk. Cyg X-3 displays high-amplitude, apparently…”
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