340 citations · 926 across the 23 of their papers we have counts for
15 papers · 1 filter
One year of broadband radio monitoring of the enigmatic transient GRB 250702B reveals the evolution of the relativistic jet
A. J. Goodwin, James C. A. Miller-Jones, Itai Sfaradi +18
We present an extensive radio monitoring campaign of the unique extragalactic transient GRB 250702B, with observations spanning 0.65-233 GHz from 6-356 d (observer frame) post-disc…
X-rays breaking out of pre-explosion ejecta mark a supernova's first light
Weimin Yuan, Qiu-Ju Huang, Jin-Ping Zhu +130
Massive stars die as core-collapse supernovae, whose optical light emerges days after the implosion. Theory predicts that the initial collapse-driven shock, upon breaking through t…
Characterising EP241107a: Multiwavelength Observations of an Einstein Probe-detected Fast X-ray Transient
D. Eappachen, A. Balasubramanian, Vishwajeet Swain +12
Fast X-ray Transients (FXTs) represent a new class of highly luminous transients in soft X-rays (0.3-10 keV) associated with violent astrophysical processes. They manifest as…
GRB 250704B: An Off-axis Short GRB with a Long-Lived Afterglow Plateau
Vishwajeet Swain, Tomás Ahumada, Sameer K. Patil +27
We present a detailed multi-wavelength afterglow study of the short GRB 250704B, extensively monitored in optical and near-infrared bands. Its afterglow displays an unusually long-…
New JWST redshifts for the host galaxies of CDF-S XT1 and XT2: understanding their nature
J. Quirola-Vásquez, F. E. Bauer, P. G. Jonker +6
CDF-S XT1 and XT2 are considered two canonical extragalactic fast X-ray transients (FXTs). In this work, we report new constraints on both FXTs, based on recent JWST NIRCam and MIR…
Redshifts of candidate host galaxies of four fast X-ray transients using VLT/MUSE
Anne Inkenhaag, Peter G. Jonker, Andrew J. Levan +3
Fast X-ray transients (FXTs) are X-ray flares lasting minutes to hours. Multi-wavelength counterparts to these FXTs have been proven hard to find. As a result distance measurements…
Probing a Magnetar Origin for the population of Extragalactic Fast X-ray Transients detected by Chandra
J. Quirola-Vásquez, F. E. Bauer, P. G. Jonker +10
Twenty-two extragalactic fast X-ray transients (FXTs) have now been discovered from two decades of Chandra data (analyzing ~259 Ms of data), with 17 associated with distant galaxie…
XMM-Newton-discovered Fast X-ray Transients: Host galaxies and limits on contemporaneous detections of optical counterparts
D. Eappachen, P. G. Jonker, J. Quirola-Vásquez +18
Extragalactic fast X-ray transients (FXTs) are a class of soft (0.3-10 keV) X-ray transients lasting a few hundred seconds to several hours. Several progenitor mechanisms have been…
Preparing for Gaia Searches for Optical Counterparts of Gravitational Wave Events during O4
Sumedha Biswas, Zuzanna Kostrzewa-Rutkowska, Peter G. Jonker +9
The discovery of gravitational wave (GW) events and the detection of electromagnetic counterparts from GW170817 has started the era of multimessenger GW astronomy.The field has bee…
Extragalactic FXT Candidates Discovered by Chandra (2014-2022)
J. Quirola-Vásquez, F. E. Bauer, P. G. Jonker +9
Extragalactic fast X-ray transients (FXTs) are short flashes of X-ray photons of unknown origin that last a few minutes to hours. We extend the search for extragalactic FXTs from Q…
The Fast X-ray Transient XRT 210423 and its Host Galaxy
D. Eappachen, P. G. Jonker, A. J. Levan +8
Fast X-ray Transients (FXTs) are X-ray flares with a duration ranging from a few hundred seconds to a few hours. Possible origins include the tidal disruption of a white dwarf by a…
Probing for the host galaxies of the fast X-ray transients XRT 000519 and XRT 110103
D. Eappachen, P. G. Jonker, M. Fraser +13
Over the past few years, 30 extragalactic fast X-ray transients (FXRTs) have been discovered, mainly in Chandra and XMM-Newton data. Their nature remains unclear, with propos…
Extragalactic fast X-ray transient candidates discovered by Chandra (2000-2014)
J. Quirola-Vasquez, F. E. Bauer, P. G. Jonker +7
Extragalactic Fast X-ray Transients (FXRTs) are short flashes of X-ray photons spanning a few seconds to hours, with an uncertain origin. Our ignorance about their physical mechani…
How low can you go? SN 2018zd as a low-mass Fe core-collapse supernova
E. Callis, M. Fraser, A. Pastorello +38
We present spectroscopy and photometry of SN 2018zd, a Type IIP core-collapse supernova with signatures of interaction with circumstantial material in its earliest spectra. High io…
AT 2017gbl: a dust obscured TDE candidate in a luminous infrared galaxy
E. C. Kool, T. M. Reynolds, S. Mattila +26
We present the discovery with Keck of the extremely infrared (IR) luminous transient AT 2017gbl, coincident with the Northern nucleus of the luminous infrared galaxy (LIRG) IRAS 23…