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20182026
most citedThe Koala: A Fast Blue Optical Transient with Luminous Radio Emission from a Starburst Dwarf Galaxy at

128 citations · 544 across the 63 of their papers we have counts for

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45 papers · 1 filter

astro-ph.HE2026

Can we constrain the binary neutron star merger time from kilonova light curves?

Noah Jamsin, Marion Pillas, Marko Ristić +18

The joint observation of gravitational waves (GWs) from a binary neutron star (BNS) merger (GW170817), together with a short Gamma-Ray Burst (GRB 170817A) and a kilonova (KN, AT201…

astro-ph.HE2026

X-ray Through Radio Observations and Modeling of the Soft X-ray Flash GRB 250419A

Genevieve Schroeder, Anna Y. Q. Ho, Gavin P. Lamb +24

Soft X-ray flashes (XRFs) are predicted from a variety of hypothesized phenomena, including "dirty fireballs" (relativistic jets with significant baryon loading), and gamma-ray bur…

astro-ph.HE2026

Not So Heavy Metal I: Low Metallicity Enhances the Rate of high-redshift Superluminous Supernovae

Ben Margalit, Allison L. Strom, Cristina Andrade +4

Type-I superluminous supernovae (SLSNe) are extremely luminous stellar explosions originating from the core collapse of massive stars. Unlike normal core-collapse supernovae, howev…

astro-ph.HE2026

Binary neutron stars in the next-generation era: Multi-messenger detection prospects and constraints on the equation of state, mass distribution, and cosmology

Hauke Koehn, Thibeau Wouters, Gilad Sadeh +5

Next-generation gravitational-wave (GW) observatories will provide crucial insights into the nature of neutron star (NS) matter and the cosmological expansion history. We estimate…

astro-ph.HE2026

Can We Find the Emission Mechanism Behind the Extremely Bright GRB 230812B?

Utkarsh Pathak, Sameer K. Patil, Hitesh Tanenia +23

GRB 230812B is a bright long-duration GRB with a luminous, long-lived afterglow and an AstroSat/CZTI polarization measurement during the prompt phase, enabling a joint study of its…

astro-ph.HE2026

A Multi-Wavelength View of the First Type Ic-BL Supernova with an Einstein Probe X-ray Shock Breakout

Jillian C. Rastinejad, Gokul Srinivasaragavan, Nikhil Sarin +36

In March 2026, the Einstein Probe (EP) discovered its most nearby (z = 0.0343) Fast X-ray Transient (FXT), EP260321a, the first EP FXT to provide a strong match to expectations for…

astro-ph.HE2026

SN~2018erx: A fast-evolving, dust-reddened Type Icn supernova with broad C II emission lines

Kaustav K. Das, Anjasha Gangopadhyay, Mansi M. Kasliwal +17

We present the discovery and characterization of SN~2018erx (ZTF18abkmbpy), a fast-evolving, unusually red, interacting stripped-envelope supernova. Spectroscopically, SN~2018erx s…

astro-ph.HE2026

Prospects for GRB Afterglow Discovery with the Eric and Wendy Schmidt Observatory System

James Freeburn, Dougal Dobie, Akash Anumarlapudi +9

Two time domain surveys, recently funded as part of the Eric and Wendy Schmidt Observatory System; the Argus Array, in the optical, and the Deep Synoptic Array (DSA), in the radio,…

astro-ph.HE2026

Long GRB 250916A: an Off-axis Powerlaw Jet with Thermal Cocoon

Utkarsh Pathak, Sameer K. Patil, Hitesh Tanenia +22

Some gamma-ray bursts (GRBs) exhibit precursor emission episodes preceding the main emission, with a quiescent period in between. The properties of the precursor emission and the d…

astro-ph.HE2026

Multiwavelength Analysis of Six Luminous Fast Blue Optical Transients

Cassie Sevilla, Anna Y. Q. Ho, Nayana A. J. +43

We present multiwavelength observations and analysis of six luminous fast blue optical transients (LFBOTs) discovered in Zwicky Transient Facility (ZTF) survey data. We identified…

astro-ph.HE2026★ 4 cited

AT2024wpp: An Extremely Luminous Fast Ultraviolet Transient Powered by Accretion onto a Black Hole

Daniel A. Perley, Anna Y. Q. Ho, Zoë McGrath +69

We present the discovery of AT 2024wpp ("Whippet"), a fast and luminous 18cow-like transient. At a redshift of z=0.0868, revealed by Keck Cosmic Web Imager spectroscopy of its fain…

astro-ph.HE2025

ZTF25abjmnps (AT2025ulz) and S250818k: A Candidate Superkilonova from a Sub-threshold Sub-Solar Gravitational Wave Trigger

Mansi M. Kasliwal, Tomas Ahumada, Robert Stein +61

On August 18, 2025, the LIGO-Virgo-KAGRA collaboration reported gravitational waves from a sub-threshold binary neutron star merger. If astrophysical, this event would have a surpr…

astro-ph.HE2025

Large Language Model-driven Analysis of General Coordinates Network (GCN) Circulars

Vidushi Sharma, Ronit Agarwala, Judith L. Racusin +9

The General Coordinates Network (GCN) is NASA's time-domain and multimessenger alert system. GCN distributes two data products: automated "Notices" and human-generated "Circulars"…

astro-ph.HE2025

AT2025ulz and S250818k: Investigating early time observations of a subsolar mass gravitational-wave binary neutron star merger candidate

Xander J. Hall, Malte Busmann, Hauke Koehn +32

Over the past LIGO--Virgo--KAGRA (LVK) observing runs, it has become increasingly clear that identifying the next electromagnetic counterparts to gravitational-wave (GW) neutron st…

astro-ph.HE2025★ 1 cited

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-…

astro-ph.HE2025

SN 2023uqf: An Interacting Supernova Coincident with a High-Energy Neutrino

Robert Stein, Anna Y. Q. Ho, Anjasha Gangopadhyay +30

Astrophysical high-energy (TeV-PeV) neutrinos were first discovered in 2013, but their origin remains largely unknown. Here we present SN 2023uqf, a supernova found in coincidence…

astro-ph.HE2025★ 5 cited

IIb or not IIb: A Catalog of ZTF Kilonova Imposters

Tyler Barna, Christoffer Fremling, Tomas Ahumada +12

Among the various classes of fast optical transients (FOTs), kilonovae (KNe), which can emerge as a result of neutron star mergers, are extremely challenging to observe because of…

astro-ph.HE2025

Low-latency Forecasts of Kilonova Light Curves for Rubin and ZTF

Natalya Plestkova, Niharika Sravan, R. Weizmann Kiendrebeogo +11

Follow-up of gravitational-wave events by wide-field surveys is a crucial tool for the discovery of electromagnetic counterparts to gravitational wave sources, such as kilonovae. M…

astro-ph.HE2025

Twin peaks: SN 2021uvy and SN 2022hgk in the landscape of double-peaked stripped envelope supernovae

Yashvi Sharma, Jesper Sollerman, William Meynardie +25

In recent years, a class of stripped-envelope supernovae (SESNe) showing two distinct light-curve peaks has emerged, where the first peak cannot be attributed to shock cooling emis…

astro-ph.HE2025

Identification and photometric classification of extragalactic transients in the Vera C. Rubin Observatory's Data Preview 1

James Freeburn, Igor Andreoni, Kaylee M. de Soto +55

The Vera C. Rubin Observatory will soon survey the southern sky, delivering a depth and sky coverage that is unprecedented in time domain astronomy. As part of commissioning, Data…

astro-ph.HE2025★ 2 cited

AT2019cmw: A highly luminous, cooling featureless TDE candidate from the disruption of a high mass star in an early-type galaxy

Jacob L. Wise, Daniel A. Perley, Nikhil Sarin +23

We present optical/UV photometric and spectroscopic observations, as well as X-ray and radio follow-up, of the extraordinary event AT2019cmw. With a peak bolometric luminosity of ~…

astro-ph.HE2025

LIGO/Virgo/KAGRA neutron star merger candidate S250206dm: Zwicky Transient Facility observations

Tomás Ahumada, Shreya Anand, Mattia Bulla +49

We present the searches conducted with the Zwicky Transient Facility (ZTF) in response to S250206dm, a bona fide event with a false alarm rate of one in 25 years, detected by the I…

astro-ph.HE2025★ 10 cited

Kilonova constraints for the LIGO/Virgo/KAGRA neutron star merger candidate S250206dm: GW-MMADS observations

Lei Hu, Tomás Cabrera, Antonella Palmese +35

Gravitational wave (GW) neutron star mergers with an associated electromagnetic counterpart constitute powerful probes of binary evolution, the production sites of heavy elements,…

astro-ph.HE2025

Low-Luminosity Type IIP Supernovae from the Zwicky Transient Facility Census of the Local Universe. II: Lightcurve Analysis

Kaustav K. Das, Mansi M. Kasliwal, Jesper Sollerman +18

The Zwicky Transient Facility Census of the Local Universe survey yielded a sample of 330 Type IIP supernovae (SNe) with well-constrained peak luminosities. In paper I (arXiv:2502.…