X-ray eruptions every 22 days from the nucleus of a nearby galaxy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00585507" target="_blank" >RIV/67985815:_____/24:00585507 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/24:00139383 RIV/00216208:11320/24:10494506
Result on the web
<a href="https://doi.org/10.1038/s41550-023-02178-4" target="_blank" >https://doi.org/10.1038/s41550-023-02178-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41550-023-02178-4" target="_blank" >10.1038/s41550-023-02178-4</a>
Alternative languages
Result language
angličtina
Original language name
X-ray eruptions every 22 days from the nucleus of a nearby galaxy
Original language description
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 ∼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 ∼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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Astronomy
ISSN
2397-3366
e-ISSN
2397-3366
Volume of the periodical
8
Issue of the periodical within the volume
March
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
347-358
UT code for WoS article
001141914300001
EID of the result in the Scopus database
2-s2.0-85182145795