Detailed Information on Publication Record
2024
X-ray eruptions every 22 days from the nucleus of a nearby galaxy
GUOLO, Muryel, Dheeraj R. PASHAM, Michal ZAJAČEK, Eric R. COUGHLIN, Suvi GEZARI et. al.Basic information
Original name
X-ray eruptions every 22 days from the nucleus of a nearby galaxy
Authors
GUOLO, Muryel (guarantor), Dheeraj R. PASHAM, Michal ZAJAČEK (703 Slovakia, belonging to the institution), Eric R. COUGHLIN, Suvi GEZARI, Petra SUKOVÁ (203 Czech Republic), Thomas WEVERS, Vojtech WITZANY, Francesco TOMBESI, Sjoert VAN VELZEN, Kate D. ALEXANDER, Yuhan YAO, Riccardo ARCODIA, Vladimír KARAS, James C. A. MILLER-JONES, Ronald REMILLARD, Keith GENDREAU and Elizabeth C. FERRARA
Edition
Nature Astronomy, Nature Publishing Group, 2024, 2397-3366
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
Germany
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 14.100 in 2022
Organization unit
Faculty of Science
UT WoS
001141914300001
Keywords in English
High-energy astrophysics; Time-domain astronomy; Transient astrophysical phenomena
Tags
Tags
International impact, Reviewed
Změněno: 16/4/2024 11:13, Mgr. Marie Šípková, DiS.
Abstract
V originále
Galactic nuclei showing recurrent phases of activity and quiescence have recently been discovered. Some have recurrence times as short as a few hours to a day and are known as quasi-periodic X-ray eruption (QPE) sources. Others have recurrence times as long as hundreds to a thousand days and are called repeating nuclear transients. Here we present a multiwavelength overview of Swift J023017.0+283603 (hereafter Swift J0230+28), a source from which repeating and quasi-periodic X-ray flares are emitted from the nucleus of a previously unremarkable galaxy at similar to 165 Mpc. It has a recurrence time of approximately 22 days, an intermediary timescale between known repeating nuclear transients and QPE sources. The source also shows transient radio emission, likely associated with the X-ray emission. Such recurrent soft X-ray eruptions, with no accompanying ultraviolet or optical emission, are strikingly similar to QPE sources. However, in addition to having a recurrence time that is similar to 25 times longer than the longest-known QPE source, Swift J0230+28's eruptions exhibit somewhat distinct shapes and temperature evolution compared to the known QPE sources. Scenarios involving extreme mass ratio inspirals are favoured over disk instability models. The source reveals an unexplored timescale for repeating extragalactic transients and highlights the need for a wide-field, time-domain X-ray mission to explore the parameter space of recurring X-ray transients.
Links
GM24-10599M, research and development project |
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