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Rachel L. TunnicliffeThe University of Warwick · Department of Physics
Rachel L. Tunnicliffe
MPhys, PhD
About
8
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Introduction
Publications
Publications (8)
A significant proportion (∼30 per cent) of the short-duration gamma-ray bursts (SGRBs) localized by Swift have no detected host galaxy coincident with the burst location to deep limits, and also no high-likelihood association with
proximate galaxies on the sky. These SGRBs may represent a population at moderately high redshifts (z ≳ 1), for which t...
Short-duration γ-ray bursts are intense flashes of cosmic γ-rays, lasting less than about two seconds, whose origin is unclear. The favoured hypothesis is that they are produced by a relativistic jet created by the merger of two compact stellar objects (specifically two neutron stars or a neutron star and a black hole). This is supported by indirec...
Short-duration gamma-ray bursts (SGRBs) are intense flashes of cosmic
gamma-rays, lasting less than ~2 s, whose origin is one of the great unsolved
questions of astrophysics today. While the favoured hypothesis for their
production, a relativistic jet created by the merger of two compact stellar
objects (specifically, two neutron stars, NS-NS, or a...
We present the optical discovery and subarcsecond optical and X-ray localization of the afterglow of the short GRB 120804A, as well as optical, near-IR, and radio detections of its host galaxy. X-ray observations with Swift/XRT, Chandra, and XMM-Newton extending to δt ≈ 19 days reveal a single power-law decline. The optical afterglow is faint, and...
We present observations of the afterglows and host galaxies of three short-duration gamma-ray bursts (GRBs): 100625A, 101219A, and 110112A. We find that GRB 100625A occurred in a z = 0.452 early-type galaxy with a stellar mass of ≈4.6 × 109M
☉ and a stellar population age of ≈0.7 Gyr, and GRB 101219A originated in a star-forming galaxy at z = 0.718...
We present comprehensive multiwavelength observations of three gamma-ray
bursts (GRBs) with durations of several thousand seconds. We demonstrate that
these events are extragalactic transients; in particular we resolve the
long-standing conundrum of the distance of GRB 101225A (the "Christmas-day
burst"), finding it to have a redshift z=0.847, and...
Variable x-ray and γ-ray emission is characteristic of the most extreme physical processes in the universe. We present multiwavelength
observations of a unique γ-ray–selected transient detected by the Swift satellite, accompanied by bright emission across the
electromagnetic spectrum, and whose properties are unlike any previously observed source....
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 proposed that both SGRBs and long gamma-ray bursts (LGRBs) may, on rare occasions, form an unstable millisecond pulsar (magnetar) prior to final collapse. GRB 090515, detect...