activity
20062026
most citedThe unusual X-ray emission of the short Swift GRB 090515: Evidence for the formation of a magnetar?

243 citations · 547 across the 14 of their papers we have counts for

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Showing astro-ph.HEShow all

11 papers · 1 filter

astro-ph.HE2026

A JWST redshift for the host galaxy of EP250207b of z=3.2: a collapsar origin is viable

Agnes P. C. van Hoof, Peter G. Jonker, Andrew J. Levan +24

We present James Webb Space Telescope (JWST) and Hubble Space Telescope (HST) observations of the field of the fast X-ray transient (FXT) detected by Einstein Probe, EP250207b, to…

astro-ph.HE2025

GRBs and Relativistic Transients in the 2040s

Nikhil Sarin, Andrew Levan, Nial Tanvir +9

Relativistic transients such as gamma-ray bursts (GRBs), jetted tidal disruption events, luminous fast blue optical transients, and fast X-ray transients, represent the brightest e…

astro-ph.HE2025★ 4 cited

Can GRB 250702B be explained as the tidal disruption of a white dwarf by an intermediate mass black hole? Yes

Rob AJ Eyles-Ferris, Andrew King, Rhaana LC Starling +11

GRB 250702B is a unique astrophysical transient characterised by its nature as a repeating gamma-ray trigger. Its properties include possible periodicity in its gamma-ray light cur…

astro-ph.HE2025

The Heavy Element Enrichment History of the Universe from Neutron Star Mergers with Habitable Worlds Observatory

Eric Burns, Jennifer Andrews, Robert Szabo +23

Understanding where elements were formed has been a key goal in astrophysics for nearly a century, with answers involving cosmology, stellar burning, and cosmic explosions. Since 1…

astro-ph.HE2025★ 1 cited

The kangaroo's first hop: the early fast cooling phase of EP250108a/SN 2025kg

Rob A. J. Eyles-Ferris, Peter G. Jonker, Andrew J. Levan +52

Fast X-ray transients (FXTs) are a rare and poorly understood population of events. Previously difficult to detect in real time, the launch of the Einstein Probe with its wide fiel…

astro-ph.HE2021★ 34 cited

Multi-messenger-Athena Synergy White Paper

L. Piro, M. Ahlers, A. Coleiro +30

In this paper we explore the scientific synergies between Athena and some of the key multi-messenger facilities that should be operative concurrently with Athena. These facilities…

astro-ph.HE2016★ 59 cited

Deeper H.E.S.S. observations of Vela Junior (RX J0852.04622): Morphology studies and resolved spectroscopy

H. E. S. S. Collaboration, H. Abdalla, A. Abramowski +260

Aims. We study gamma-ray emission from the shell-type supernova remnant (SNR) RX J0852.04622 to better characterize its spectral properties and its distribution over the SNR. Me…

astro-ph.HE2013

Are GRBs the same at high and low redshift?

O. M. Littlejohns, N. R. Tanvir, R. Willingale +3

Due to their highly luminous nature, gamma-ray bursts (GRBs) are useful tools in studying the early Universe (up to z = 10). We consider whether the available subset of Swift high…

astro-ph.HE2011★ 1 cited

Spectral evolution and the onset of the X-ray GRB afterglow

P. A. Evans, J. P. Osborne, R. Willingale +1

Based on light curves from the Swift Burst Analyser, we investigate whether a `dip' feature commonly seen in the early-time hardness ratios of Swift-XRT data could arise from the j…

astro-ph.HE2010★ 243 cited

The unusual X-ray emission of the short Swift GRB 090515: Evidence for the formation of a magnetar?

A. Rowlinson, P. T. O'Brien, N. R. Tanvir +16

The majority of short gamma-ray bursts (SGRBs) are thought to originate from the merger of compact binary systems collapsing directly to form a black hole. However, it has been pro…

astro-ph.HE2009★ 171 cited

Can X-ray emission powered by a spinning-down magnetar explain some GRB light curve features?

N. Lyons, P. T. O'Brien, B. Zhang +3

Long duration gamma-ray bursts (GRBs) are thought to be produced by the core-collapse of a rapidly-rotating massive star. This event generates a highly relativistic jet and prompt…