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.Základní údaje
Originální název
X-ray eruptions every 22 days from the nucleus of a nearby galaxy
Autoři
GUOLO, Muryel (garant), Dheeraj R. PASHAM, Michal ZAJAČEK (703 Slovensko, domácí), Eric R. COUGHLIN, Suvi GEZARI, Petra SUKOVÁ (203 Česká republika), 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 a Elizabeth C. FERRARA
Vydání
Nature Astronomy, Nature Publishing Group, 2024, 2397-3366
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 14.100 v roce 2022
Organizační jednotka
Přírodovědecká fakulta
UT WoS
001141914300001
Klíčová slova anglicky
High-energy astrophysics; Time-domain astronomy; Transient astrophysical phenomena
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 16. 4. 2024 11:13, Mgr. Marie Šípková, DiS.
Anotace
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.
Návaznosti
GM24-10599M, projekt VaV |
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