pith. sign in

arxiv: 2404.16350 · v1 · pith:TQCZNDYVnew · submitted 2024-04-25 · 🌌 astro-ph.HE

The fast X-ray transient EP240315a: a z ~ 5 gamma-ray burst in a Lyman continuum leaking galaxy

Andrew J. Levan , Peter G. Jonker , Andrea Saccardi , Daniele Bj{\o}rn Malesani , Nial R. Tanvir , Luca Izzo , Kasper E. Heintz , Daniel Mata S\'anchez
show 68 more authors
Jonathan Quirola-V\'asquez Manuel A. P. Torres Susanna D. Vergani Steve Schulze Andrea Rossi Paolo D'Avanzo Benjamin Gompertz Antonio Martin-Carrillo Antonio de Ugarte Postigo Benjamin Schneider Weimin Yuan Zhixing Ling Wenjie Zhang Xuan Mao Yuan Liu Hui Sun Dong Xu Zipei Zhu Jos\'e Feliciano Ag\"u\'i Fern\'andez Lorenzo Amati Franz E. Bauer Sergio Campana Francesco Carotenuto Ashley Chrimes Joyce N.D. van Dalen Valerio D'Elia Massimo Della Valle Massimiliano De Pasquale Vikram S. Dhillon Llu\'is Galbany Nicola Gaspari Giulia Gianfagna Andreja Gomboc Nusrin Habeeb Agnes P. C. van Hoof Youdong Hu Pall Jakobsson Yashaswi Julakanti Judith Korth Chryssa Kouveliotou Tanmoy Laskar Stuart P. Littlefair Elisabetta Maiorano Jirong Mao Andrea Melandri M. Coleman Miller Tamal Mukherjee Samantha R. Oates Paul O'Brien Jesse T. Palmerio Hannu Parviainen Dani\"elle L. A. Pieterse Silvia Piranomonte Luigi Piro Giovanna Pugliese Maria E. Ravasio Ben Rayson Ruben Salvaterra Rub\'en S\'anchez-Ram\'irez Nikhil Sarin Samuel P. R. Shilling Rhaana L. C. Starling Gianpiero Tagliaferri Aishwarya Linesh Thakur Christina C. Th\"one Klaas Wiersema Isabelle Worssam Tayyaba Zafar
This is my paper
classification 🌌 astro-ph.HE
keywords ep240315aeventsbursteinsteinfastgamma-rayleakinglong
0
0 comments X
read the original abstract

The nature of the minute-to-hour long Fast X-ray Transients (FXTs) localised by telescopes such as Chandra, Swift, and XMM-Newton remains mysterious, with numerous models suggested for the events. Here, we report multi-wavelength observations of EP240315a, a 1600 s long transient detected by the Einstein Probe, showing it to have a redshift of z=4.859. We measure a low column density of neutral hydrogen, indicating that the event is embedded in a low-density environment, further supported by direct detection of leaking ionising Lyman-continuum. The observed properties are consistent with EP240315a being a long-duration gamma-ray burst, and these observations support an interpretation in which a significant fraction of the FXT population are lower-luminosity examples of similar events. Such transients are detectable at high redshifts by the Einstein Probe and, in the (near) future, out to even larger distances by SVOM, THESEUS, and Athena, providing samples of events into the epoch of reionisation.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

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

    astro-ph.HE 2026-06 unverdicted novelty 7.0

    First definitive X-ray shock breakout from a Type Ic-BL supernova, with radio constraints and a rate calculation implying most such supernovae produce fainter signals than observed here.

  2. Fast X-ray Transients produced by Off-axis Jet-Cocoons from Long Gamma-Ray Bursts

    astro-ph.HE 2026-03 conditional novelty 6.0

    Off-axis cocoon emission from long GRB jets produces fast X-ray transients with luminosities of 10^47-48 erg/s, durations of 10-100 s, and soft quasi-thermal spectra peaking near 0.8 keV.

  3. Discovery of a Supernova Following the Einstein Probe Transient EP250302a at z = 1.131

    astro-ph.HE 2026-06 unverdicted novelty 4.0

    The paper identifies supernova emission matching a scaled SN 1998bw template in the late-time light curve of EP250302a at z=1.131, with early data constraining the jet Lorentz factor above 25.