Science with a small two-band UV-photometry mission III: Active Galactic Nuclei and nuclear transients

M Zajaček, B Czerny, VK Jaiswal, M Štolc… - Space Science …, 2024 - Springer
In this review, the third one in the series focused on a small two-band UV-photometry
mission, we assess possibilities for a small UV two-band photometry mission in studying …

Repeating nuclear transients as candidate electromagnetic counterparts of LISA extreme mass ratio inspirals

S Kejriwal, V Witzany, M Zajaček… - Monthly Notices of …, 2024 - academic.oup.com
Extreme mass ratio inspirals (EMRIs) are one of the primary targets for the recently adopted
millihertz gravitational-wave observatory LISA. Some previous studies have argued that a …

Probing orbits of stellar mass objects deep in galactic nuclei with quasiperiodic eruptions. II. Population analysis

C Zhou, B Zhong, Y Zeng, L Huang, Z Pan - Physical Review D, 2024 - APS
Quasiperiodic eruptions (QPEs) are intense repeating soft x-ray bursts with recurrence times
about a few hours to a few weeks from galactic nuclei. Though the debates on the origin of …

Ticking away: The long-term X-ray timing and spectral evolution of eRO-QPE2

R Arcodia, I Linial, G Miniutti, A Franchini… - Astronomy & …, 2024 - aanda.org
Quasi-periodic eruptions (QPEs) are repeated X-ray flares from galactic nuclei that recur
every few hours to days, depending on the source. Despite some diversity in the recurrence …

Fragments of harmony amid apparent chaos: a closer look at the X-ray quasi-periodic eruptions of the galaxy RX J1301. 9+ 2747

M Giustini, G Miniutti, R Arcodia, A Goodwin… - arXiv preprint arXiv …, 2024 - aanda.org
Quasi-periodic eruptions (QPEs) are an extreme X-ray variability phenomenon associated
with low-mass (MBH< 107 M⊙) supermassive black holes (SMBHs). First discovered in the …

Repeating nuclear transients from repeating partial tidal disruption events: reproducing ASASSN-14ko and AT2020vdq

A Bandopadhyay, ER Coughlin, CJ Nixon… - arXiv preprint arXiv …, 2024 - arxiv.org
Some electromagnetic outbursts from the nuclei of distant galaxies have been found to
repeat on months-to-years timescales, and each of these sources can putatively arise from …

A Host Galaxy Morphology Link Between Quasi-Periodic Eruptions and Tidal Disruption Events

O Gilbert, JJ Ruan, M Eracleous, D Haggard… - arXiv preprint arXiv …, 2024 - arxiv.org
The physical processes that produce X-ray Quasi-Periodic Eruptions (QPEs) recently
discovered from the nuclei of several low-redshift galaxies are mysterious. Several pieces of …

Alive and Strongly Kicking: Stable X-ray Quasi-Periodic Eruptions from eRO-QPE2 over 3.5 Years

D Pasham, S Kejriwal, E Coughlin, V Witzany… - arXiv preprint arXiv …, 2024 - arxiv.org
Quasi-periodic eruptions (QPEs) are recurring bursts of soft X-rays from the nuclei of
galaxies. Their physical origin is currently a subject of debate, with models typically invoking …

Further evidence of Quasiperiodic Eruptions in a tidal disruption event AT2019vcb by SRG/eROSITA

S Bykov, M Gilfanov, R Sunyaev… - arXiv preprint arXiv …, 2024 - arxiv.org
We report the discovery of a short, large amplitude X-ray flare from AT2019vcb (aka
Tormund), a tidal disruption event at $ z= 0.088$. The discovery is based on the data from …