activity
20162026
most citedAn embedded X-ray source shines through the aspherical AT2018cow: revealing the inner workings of the most luminous fast-evolving optical transients

267 citations · 621 across the 10 of their papers we have counts for

collaborators

11 papers

astro-ph.IM2026

Understanding cosmic explosions

Karri I. I. Koljonen, Tomek Kamiński, Anna Y. Q. Ho +11

Millimeter-wavelength observations provide a uniquely sensitive window into the physics of cosmic explosions, from supernovae (SNe) and tidal disruption events (TDEs) to nova erupt…

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

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…

astro-ph.HE2026

Revealing the Structure and Magnetization of GRB Jets with ALMA Polarization Observations

Tanmoy Laskar, Collin T. Christy, Noah Franz +9

We present a systematic study of the currently available ALMA millimeter polarimetric sample of gamma-ray burst (GRB) afterglows. Our sample comprises 24 observations (20 new) of 1…

astro-ph.HE2026

The Radio Properties of Extreme Coronal Line Emitters: Constraints on the Sub-parsec Environment

Noah Franz, Kate D. Alexander, Collin T. Christy +10

A tiny fraction () of galaxies display luminous, high-ionization metal emission lines, which may be persistent or variable. These extreme coronal lines (ECLs) are produced…

astro-ph.HE2026

A Self-Consistent Framework for Synchrotron Equipartition Analysis

Coleman Rohde, Tanmoy Laskar, Noah Franz +3

Determining the energy, size, and velocity of synchrotron-emitting outflows is essential for testing models of their formation and evolution, but these quantities are often poorly…

astro-ph.HE2020★ 43 cited

GRB Fermi-LAT afterglows: explaining flares, breaks, and energetic photons

N. Fraija, T. Laskar, S. Dichiara +4

The Fermi-LAT collaboration presented the second gamma-ray burst (GRB) catalog covering its first 10 years of operations. A significant fraction of afterglow-phase light curves in…

astro-ph.IM2020★ 7 cited

Methods for detection and analysis of weak radio sources with single-dish radio telescopes

M. Marongiu, A. Pellizzoni, E. Egron +13

The detection of mJy/sub-mJy point sources is a significant challenge for single-dish radio telescopes. Detection or upper limits on the faint afterglow from GRBs or other sources…

astro-ph.IM2019★ 2 cited

A robotic pipeline for fast GRB followup with the Las Cumbres observatory network

R. Martone, C. Guidorzi, C. G. Mundell +9

In the era of multi-messenger astronomy the exploration of the early emission from transients is key for understanding the encoded physics. At the same time, current generation net…

astro-ph.HE2018★ 267 cited

An embedded X-ray source shines through the aspherical AT2018cow: revealing the inner workings of the most luminous fast-evolving optical transients

Raffaella Margutti, B. D. Metzger, R. Chornock +41

We present the first extensive radio to gamma-ray observations of a fast-rising blue optical transient (FBOT), AT2018cow, over its first ~100 days. AT2018cow rose over a few days t…

astro-ph.SR2016★ 35 cited

The Intermediate Luminosity Optical Transient SN 2010da: The Progenitor, Eruption and Aftermath of a Peculiar Supergiant High-mass X-ray Binary

V. Ashley Villar, Edo Berger, Ryan Chornock +7

We present optical spectroscopy, ultraviolet to infrared imaging and X-ray observations of the intermediate luminosity optical transient (ILOT) SN 2010da in NGC 300 (d=1.86 Mpc) sp…