| PASHAM, D. R., E. R. COUGHLIN, Michal ZAJAČEK, Itai LINIAL, Petra SUKOVÁ, C. J. NIXON, Agnieszka JANIUK, M. SNIEGOWSKA, Vojtěch WITZANY, Vladimír KARAS, M. KRUMPE, D. ALTAMIRANO, T. WEVERS a Riccardo ARCODIA. Alive but Barely Kicking: News from 3+ yr of Swift and XMM-Newton X-Ray Monitoring of Quasiperiodic Eruptions from eRO-QPE1. Astrophysical Journal Letters. IOP Publishing Ltd, 2024, roč. 963, č. 2, s. 1-13. ISSN 2041-8205. Dostupné z: https://dx.doi.org/10.3847/2041-8213/ad2a5c. |
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@article{2388537,
author = {Pasham, D. R. and Coughlin, E. R. and Zajaček, Michal and Linial, Itai and Suková, Petra and Nixon, C. J. and Janiuk, Agnieszka and Sniegowska, M. and Witzany, Vojtěch and Karas, Vladimír and Krumpe, M. and Altamirano, D. and Wevers, T. and Arcodia, Riccardo},
article_number = {2},
doi = {http://dx.doi.org/10.3847/2041-8213/ad2a5c},
keywords = {Tidal disruption; Black hole physics; High energy astrophysics; Supermassive black holes; Astronomy data analysis; X-ray astronomy; X-ray sources},
language = {eng},
issn = {2041-8205},
journal = {Astrophysical Journal Letters},
title = {Alive but Barely Kicking: News from 3+ yr of Swift and XMM-Newton X-Ray Monitoring of Quasiperiodic Eruptions from eRO-QPE1},
url = {https://iopscience.iop.org/article/10.3847/2041-8213/ad2a5c},
volume = {963},
year = {2024}
}
TY - JOUR
ID - 2388537
AU - Pasham, D. R. - Coughlin, E. R. - Zajaček, Michal - Linial, Itai - Suková, Petra - Nixon, C. J. - Janiuk, Agnieszka - Sniegowska, M. - Witzany, Vojtěch - Karas, Vladimír - Krumpe, M. - Altamirano, D. - Wevers, T. - Arcodia, Riccardo
PY - 2024
TI - Alive but Barely Kicking: News from 3+ yr of Swift and XMM-Newton X-Ray Monitoring of Quasiperiodic Eruptions from eRO-QPE1
JF - Astrophysical Journal Letters
VL - 963
IS - 2
SP - 1-13
EP - 1-13
PB - IOP Publishing Ltd
SN - 20418205
KW - Tidal disruption
KW - Black hole physics
KW - High energy astrophysics
KW - Supermassive black holes
KW - Astronomy data analysis
KW - X-ray astronomy
KW - X-ray sources
UR - https://iopscience.iop.org/article/10.3847/2041-8213/ad2a5c
N2 - 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.
ER -
PASHAM, D. R., E. R. COUGHLIN, Michal ZAJAČEK, Itai LINIAL, Petra SUKOVÁ, C. J. NIXON, Agnieszka JANIUK, M. SNIEGOWSKA, Vojtěch WITZANY, Vladimír KARAS, M. KRUMPE, D. ALTAMIRANO, T. WEVERS a Riccardo ARCODIA. Alive but Barely Kicking: News from 3+ yr of Swift and XMM-Newton X-Ray Monitoring of Quasiperiodic Eruptions from eRO-QPE1. \textit{Astrophysical Journal Letters}. IOP Publishing Ltd, 2024, roč.~963, č.~2, s.~1-13. ISSN~2041-8205. Dostupné z: https://dx.doi.org/10.3847/2041-8213/ad2a5c.
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