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@article{60689,
author = {Zajaček, Michal and Czerny, B. and Jaiswal, V. K. and Štolc, M. and Karas, V. and Pandey, A. and Pasham, D. R. and Śniegowska, M. and Witzany, V. and Suková, P. and Münz, Filip and Werner, Norbert and Řípa, Jakub and Merc, J. and Labaj, Matúš and Kurfürst, Petr and Krtička, Jiří},
article_number = {3},
doi = {http://dx.doi.org/10.1007/s11214-024-01062-5},
keywords = {Accretion flows; Galactic nuclei; Photometry; Tidal disruption events; Time series; Transients},
language = {eng},
issn = {0038-6308},
journal = {Space Science Reviews},
title = {Science with a Small Two-Band UV-Photometry Mission III: Active Galactic Nuclei and Nuclear Transients},
url = {https://link.springer.com/article/10.1007/s11214-024-01062-5},
volume = {220},
year = {2024}
}
TY - JOUR
ID - 60689
AU - Zajaček, Michal - Czerny, B. - Jaiswal, V. K. - Štolc, M. - Karas, V. - Pandey, A. - Pasham, D. R. - Śniegowska, M. - Witzany, V. - Suková, P. - Münz, Filip - Werner, Norbert - Řípa, Jakub - Merc, J. - Labaj, Matúš - Kurfürst, Petr - Krtička, Jiří
PY - 2024
TI - Science with a Small Two-Band UV-Photometry Mission III: Active Galactic Nuclei and Nuclear Transients
JF - Space Science Reviews
VL - 220
IS - 3
SP - 1-48
EP - 1-48
PB - Springer
SN - 0038-6308
KW - Accretion flows
KW - Galactic nuclei
KW - Photometry
KW - Tidal disruption events
KW - Time series
KW - Transients
UR - https://link.springer.com/article/10.1007/s11214-024-01062-5
N2 - 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 accreting supermassive black holes (SMBHs; mass range ∼106–1010M⊙). We focus on the following observational concepts: (i) dedicated monitoring of selected type-I Active Galactic Nuclei (AGN) in order to measure the time delay between the far-UV, the near-UV, and other wavebands (X-ray and optical), (ii) nuclear transients including (partial) tidal disruption events and repetitive nuclear transients, and (iii) the study of peculiar sources, such as changing-look AGN, hollows and gaps in accretion disks, low-luminosity AGN, and candidates for Intermediate-Mass Black Holes (IMBHs; mass range ∼102–105M⊙) in galactic nuclei. The importance of a small UV mission for the observing program (i) is to provide intense, high-cadence monitoring of selected sources, which will be beneficial for, e.g. reverberation-mapping of accretion disks and subsequently confronting accretion-disk models with observations. For program (ii), a relatively small UV space telescope is versatile enough to start monitoring a transient event within ≲ 20 minutes after receiving the trigger; such a moderately fast repointing capability will be highly beneficial. Peculiar sources within the program (iii) will be of interest to a wider community and will create an environment for competitive observing proposals. For tidal disruption events (TDEs), high-cadence UV monitoring is crucial for distinguishing among different scenarios for the origin of the UV emission. The small two-band UV space telescope will also provide information about the near- and far-UV continuum variability for rare transients, such as repetitive partial TDEs and jetted TDEs. We also discuss the possibilities to study and analyze sources with non-standard accretion flows, such as AGN with gappy disks, low-luminosity active galactic nuclei with intermittent accretion, and SMBH binaries potentially involving intermediate-mass black holes.
ER -
ZAJAČEK, Michal, B. CZERNY, V. K. JAISWAL, M. ŠTOLC, V. KARAS, A. PANDEY, D. R. PASHAM, M. $\backslash$'SNIEGOWSKA, V. WITZANY, P. SUKOVÁ, Filip MÜNZ, Norbert WERNER, Jakub ŘÍPA, J. MERC, Matúš LABAJ, Petr KURFÜRST and Jiří KRTIČKA. Science with a Small Two-Band UV-Photometry Mission III: Active Galactic Nuclei and Nuclear Transients. \textit{Space Science Reviews}. Springer, 2024, vol.~220, No~3, p.~1-48. ISSN~0038-6308. Available from: https://dx.doi.org/10.1007/s11214-024-01062-5.
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