226 citations · 644 across the 12 of their papers we have counts for
12 papers
The ambiguous AT2022rze: Changing-look AGN mimicking a supernova in a merging galaxy system
P. J. Pessi, R. Lunnan, J. Sollerman +36
AT2022rze is a luminous, ambiguous transient located South-East of the geometric center of its host galaxy at redshift z = 0.08. The host appears to be formed by a merging galaxy s…
Sample of hydrogen-rich superluminous supernovae from the Zwicky Transient Facility
P. J. Pessi, R. Lunnan, J. Sollerman +26
Hydrogen-rich superluminous supernovae (SLSNe II) are rare. The exact mechanism producing their extreme light curve peaks is not understood. Analysis of single events and small sam…
The Gravity Collective: A Comprehensive Analysis of the Electromagnetic Search for the Binary Neutron Star Merger GW190425
D. A. Coulter, C. D. Kilpatrick, D. O. Jones +34
We present an ultraviolet-to-infrared search for the electromagnetic (EM) counterpart to GW190425, the second-ever binary neutron star (BNS) merger discovered by the LIGO-Virgo-KAG…
Four new eclipsing accreting ultracompact white dwarf binaries found with the Zwicky Transient Facility
J. M. Khalil, J. van Roestel, E. C. Bellm +10
Context. Accreting ultracompact binaries contain a white dwarf that is accreting from a degenerate object and have orbital periods shorter than 65 minutes. Aims. The aims of this l…
Machine-Learning Enhanced Photometric Analysis of the Extremely Bright GRB 210822A
Camila Angulo-Valdez, Rosa L. Becerra, Margarita Pereyra +16
We present analytical and numerical models of the bright long GRB 210822A at . The intrinsic extreme brightness exhibited in the optical, which is very similar to other br…
Reverse Shock Emission Revealed in Early Photometry in the Candidate Short GRB 180418A
Rosa L. Becerra, Simone Dichiara, Alan M. Watson +14
We present observations of the possible short GRB 180418A in -rays, X-rays, and in the optical. Early optical photometry with the TAROT and RATIR instruments show a bright peak…
Keck Observations of 160 Gamma-Ray Burst Host Galaxies
Daniel A. Perley, Joshua S. Bloom, Jason X. Prochaska
We present a preliminary data release from our multi-year campaign at Keck Observatory to study the host galaxies of a large sample of Swift-era gamma-ray bursts via multi-color gr…
An outburst from a massive star 40 days before a supernova explosion
E. O. Ofek, M. Sullivan, S. B. Cenko +17
Various lines of evidence suggest that very massive stars experience extreme mass-loss episodes shortly before they explode as a supernova. Interestingly, several models predict su…
Asteroid rotation periods from the Palomar Transient Factory survey
D. Polishook, E. O. Ofek, A. Waszczak +17
The Palomar Transient Factory (PTF) is a synoptic survey designed to explore the transient and variable sky in a wide variety of cadences. We use PTF observations of fields that we…
Automating Discovery and Classification of Transients and Variable Stars in the Synoptic Survey Era
J. S. Bloom, J. W. Richards, P. E. Nugent +10
The rate of image acquisition in modern synoptic imaging surveys has already begun to outpace the feasibility of keeping astronomers in the real-time discovery and classification l…
PTF10iya: A short-lived, luminous flare from the nuclear region of a star-forming galaxy
S. Bradley Cenko, Joshua S. Bloom, S. R. Kulkarni +28
We present the discovery and characterisation of PTF10iya, a short-lived (dt ~ 10 d, with an optical decay rate of ~ 0.3 mag per d), luminous (M_g ~ -21 mag) transient source found…
Generalized Tests for Selection Effects in GRB High-Energy Correlations
Nathaniel R. Butler, Daniel Kocevski, Joshua S. Bloom
Several correlations among parameters derived from modelling the high-energy properties of GRBs have been reported. We show that well-known examples of these have common features i…