J 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

Odkazy

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
Název: Hvězdy v galaktických jádrech: vzájemný vztah s masivními černými dírami
Investor: Grantová agentura ČR, Hvězdy v galaktických jádrech: vzájemný vztah s masivními černými dírami
90140, velká výzkumná infrastruktura
Název: e-INFRA CZ