2024
Alive but Barely Kicking: News from 3+ yr of Swift and XMM-Newton X-Ray Monitoring of Quasiperiodic Eruptions from eRO-QPE1
PASHAM, D. R., E. R. COUGHLIN, Michal ZAJAČEK, Itai LINIAL, Petra SUKOVÁ et. al.Základní údaje
Originální název
Alive but Barely Kicking: News from 3+ yr of Swift and XMM-Newton X-Ray Monitoring of Quasiperiodic Eruptions from eRO-QPE1
Autoři
PASHAM, D. R., E. R. COUGHLIN, Michal ZAJAČEK (703 Slovensko, domácí), Itai LINIAL, Petra SUKOVÁ (203 Česká republika), C. J. NIXON, Agnieszka JANIUK, M. SNIEGOWSKA, Vojtěch WITZANY, Vladimír KARAS (203 Česká republika), M. KRUMPE, D. ALTAMIRANO, T. WEVERS a Riccardo ARCODIA
Vydání
Astrophysical Journal Letters, IOP Publishing Ltd, 2024, 2041-8205
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 7.900 v roce 2022
Organizační jednotka
Přírodovědecká fakulta
UT WoS
001181030400001
Klíčová slova anglicky
Tidal disruption; Black hole physics; High energy astrophysics; Supermassive black holes; Astronomy data analysis; X-ray astronomy; X-ray sources
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 3. 2024 09:58, Mgr. Marie Šípková, DiS.
Anotace
V originále
Quasiperiodic eruptions (QPEs) represent a novel class of extragalactic X-ray transients that are known to repeat at roughly regular intervals of a few hours to days. Their underlying physical mechanism is a topic of heated debate, with most models proposing that they originate either from instabilities within the inner accretion flow or from orbiting objects. At present, our knowledge of how QPEs evolve over an extended timescale of multiple years is limited, except for the unique QPE source GSN 069. In this study, we present results from strategically designed Swift observing programs spanning the past 3 yr, aimed at tracking eruptions from eRO-QPE1. Our main results are as follows: (1) the recurrence time of eruptions can vary from flare to flare and is in the range of 0.6-1.2 days; (2) there is no detectable secular trend in evolution of the recurrence times; (3) consistent with prior studies, their eruption profiles can have complex shapes; and (4) the peak flux of the eruptions has been declining over the past 3 yr, with the eruptions barely detected in the most recent Swift data set taken in 2023 June. This trend of weakening eruptions has been reported recently in GSN 069. However, because the background luminosity of eRO-QPE1 is below our detection limit, we cannot verify whether the weakening is correlated with the background luminosity (as is claimed to be the case for GSN 069). We discuss these findings within the context of various proposed QPE models.
Návaznosti
GM24-10599M, projekt VaV |
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90140, velká výzkumná infrastruktura |
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