A real-time transient detector and the Living Swift-XRT Point Source catalogue
Date Issued
2023
Author(s)
Evans, P. A.
•
Page, K. L.
•
Bearmore, A. P.
•
Eyles-Ferris, R. A. J.
•
Osborne, J. P.
•
•
Kennea, J. A.
•
Cenko, S. B.
Abstract
We present the Living Swift-XRT Point Source catalogue (LSXPS) and real-time
transient detector. This system allows us for the first time to carry out
low-latency searches for new transient X-ray events fainter than those
available to the current generation of wide-field imagers, and report their
detection in near real-time. Previously, such events could only be found in
delayed searches, e.g. of archival data; our low-latency analysis now enables
rapid and ongoing follow up of these events, enabling the probing of timescales
previously inaccessible. The LSXPS is, uniquely among X-ray catalogues, updated
in near real-time, making this the first up-to-date record of the point sources
detected by a sensitive X-ray telescope: the Swift-X-ray Telescope (XRT). The
associated upper limit calculator likewise makes use of all available data
allowing contemporary upper limits to be rapidly produced on-demand. These
facilities, which enable the low-latency transient system are also fully
available to the community, providing a powerful resource for time-domain and
multi-messenger astrophysics.
Volume
518
Issue
1
Start page
174
Issn Identifier
0035-8711
Rights
open.access
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