activity
20222026
most citedPrompt emission and early optical afterglow of VHE detected GRB 201015A and GRB 201216C: onset of the external forward shock

17 citations · 58 across the 18 of their papers we have counts for

collaborators

19 papers

astro-ph.HE2026

An extremely bright slow-rising afterglow from an off-axis jet in GRB 260310A

Yu-Han Yang, Roberto Ricci, Eleonora Troja +31

We present a multi-wavelength study of GRB 260310A, a nearby long-duration gamma-ray burst at associated with a broad-lined Type Ic supernova. Despite its modest pro…

astro-ph.SR2026

Ellipsoidal modulation and multi-wavelength activity in the pre-cataclysmic binary RX J1553.0+4457

S. -Y. Wu, M. Gritsevich, Q. -H. Lao +39

RX J1553.0+4457 (TMTS J15530469+4457458) is a detached post-common-envelope binary containing a cool white dwarf and an active late-type companion. We present a multi-wavelength st…

astro-ph.SR2026

Stochastic Optical Variability and an rms-flux Relation in the Intermediate Polar EP240309a

S. -Y. Wu, Y. -D. Hu, I. Perez-Garcia +18

Magnetic cataclysmic variables provide a natural laboratory for studying how accretion interacts with compact-object magnetospheres and generates stochastic variability. We present…

astro-ph.HE2026

Minutes-long soft X-ray prompt emission from a compact object merger

An Li, Chen-Wei Wang, Niccolò Passaleva +75

Compact object mergers are multi-messenger sources and known progenitors of some gamma-ray bursts, bright flashes of high-energy radiation powered by a central engine, either an ac…

astro-ph.HE2025

EP250827b/SN 2025wkm: An X-ray Flash-Supernova Powered by a Central Engine and Circumstellar Interaction

Gokul P. Srinivasaragavan, Dongyue Li, Xander J. Hall +100

We present the discovery of EP250827b/SN 2025wkm, an X-ray Flash (XRF) discovered by the Einstein Probe (EP), accompanied by a broad-line Type Ic supernova (SN Ic-BL) at $z = 0.119…

astro-ph.HE2025

Deciphering the Physical Origin of GRB 240825A: A Long GRB Lacking a Bright Supernova

Rahul Gupta, Judith L. Racusin, R. Sanchez-Ramirez +54

We present a comprehensive multiwavelength analysis of GRB 240825A, a bright gamma-ray burst (GRB) detected by Fermi and Swift, with a prompt duration ( 4 sec in…

astro-ph.HE2025★ 13 cited

Spectral Hardening Reveals Afterglow Emergence in Long-Duration Fast X-ray Transients: A Case Study of GRB 250404A/EP250404a

Yi-Han Iris Yin, Yuan Fang, Bin-Bin Zhang +56

The prompt emission and afterglow phases of gamma-ray bursts (GRBs) have been extensively studied, yet the transition between these two phases remains inadequately characterized du…

astro-ph.HE2025

EP240801a/XRF 240801B: An X-ray Flash Detected by the Einstein Probe and Implications of its Multiband Afterglow

Shuai-Qing Jiang, Dong Xu, Agnes P. C. van Hoof +89

We present multiband observations and analysis of EP240801a, a low-energy, extremely soft gamma-ray burst (GRB) discovered on August 1, 2024 by the Einstein Probe (EP) satellite, w…

astro-ph.EP2025★ 1 cited

Stellar occultation observations of (38628) Huya and its satellite: a detailed look into the system

F. L. Rommel, E. Fernández-Valenzuela, B. C. N. Proudfoot +78

The physical and orbital parameters of Trans-Neptunian Objects (TNOs) provide valuable information about the Solar System's formation and evolution. In particular, the characteriza…

astro-ph.HE2024★ 1 cited

Extremely luminous optical afterglow of an energetic gamma-ray burst GRB 230204B

Rahul Gupta, Judith Racusin, Vladimir Lipunov +47

Robotic telescope networks play an important role in capturing early and bright optical afterglows, providing critical insights into the energetics and emission mechanisms of GRBs.…

astro-ph.HE2024

X-ray and gamma-ray timing of GRB 180720B, GRB 181222B, GRB 211211A and GRB 220910A observed with Fermi and ASIM

M. D. Caballero-Garcia, E. Gogus, J. Navarro-Gonzalez +20

We present a timing study of the gamma and X-ray observations and analysis of a sample of bright gamma-ray bursts (GRBs; i.e. GRB 180720B, GRB 181222B, GRB 211211A and GRB 220910A)…

astro-ph.HE2024★ 1 cited

GRB 240529A: A Tale of Two Shocks

Tian-Rui Sun, Jin-Jun Geng, Jing-Zhi Yan +66

Thanks to the rapidly increasing time-domain facilities, we are entering a golden era of research on gamma-ray bursts (GRBs). In this Letter, we report our observations of GRB 2405…

astro-ph.EP2023★ 2 cited

Ejecta Evolution Following a Planned Impact into an Asteroid: The First Five Weeks

Theodore Kareta, Cristina Thomas, Jian-Yang Li +85

The impact of the DART spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos' orbit substantially, largely from the ejection of material. We present results fr…

astro-ph.HE2023

Revealing characteristics of dark GRB 150309A: dust extinguished or high-z?

A. J. Castro-Tirado, Rahul Gupta, S. B. Pandey +28

Dark GRBs constitute a significant fraction of the GRB population. In this paper, we present the multiwavelength analysis of an intense two-episodic GRB 150309A observed early on t…

astro-ph.HE2023★ 9 cited

A lanthanide-rich kilonova in the aftermath of a long gamma-ray burst

Yu-Han Yang, Eleonora Troja, Brendan O'Connor +24

Observationally, Kilonovae are astrophysical transients powered by the radioactive decay of nuclei heavier than iron, synthesized in the merger of two compact objects. Over the fir…

astro-ph.EP2023

Characterization of the ejecta from NASA/DART impact on Dimorphos: observations and Monte Carlo models

Fernando Moreno, Adriano Campo Bagatin, Gonzalo Tancredi +26

The NASA/DART (Double Asteroid Redirection Test) spacecraft successfully crashed on Dimorphos, the secondary component of the binary (65803) Didymos system. Following the impact, a…

astro-ph.HE2023

The Burst Observer and Optical Transient Exploring System in the multi-messenger astronomy era

Y. -D. Hu, E. Fernández-García, M. D. Caballero-García +6

The Burst Observer and Optical Transient Exploring System (BOOTES) was first designed as an asset of autonomous telescopes that started to be deployed in 1998, taking 24 years to b…

astro-ph.HE2022★ 17 cited

Prompt emission and early optical afterglow of VHE detected GRB 201015A and GRB 201216C: onset of the external forward shock

Amit Kumar Ror, Rahul Gupta, Martin Jelínek +19

We present a detailed prompt emission and early optical afterglow analysis of the two very high energy (VHE) detected bursts GRB 201015A and GRB 201216C, and their comparison with…

astro-ph.HE2022★ 14 cited

Multi-wavelength study of the luminous GRB 210619B observed with Fermi and ASIM

M. D. Caballero-García, Rahul Gupta, S. B. Pandey +28

We report on detailed multi-wavelength observations and analysis of the very bright and long GRB 210619B, detected by the Atmosphere-Space Interactions Monitor (ASIM) installed on…