Repository of University of Nova Gorica

# Search the repository A+ | A- | | SLO | ENG

 Query: search in TitleAuthorAbstractKeywordsFulltextYear of publishing ANDORAND NOT search in TitleAuthorAbstractKeywordsFulltextYear of publishing ANDORAND NOT search in TitleAuthorAbstractKeywordsFulltextYear of publishing ANDORAND NOT search in TitleAuthorAbstractKeywordsFulltextYear of publishing Work type: All work types Habilitation (m4) Specialist thesis (m3) High school thesis (m6) Bachelor work * (dip) Master disertations * (mag) Doctorate disertations * (dok) Research Data or Corpuses (data) * old and bolonia study programme Language: All languagesSlovenianEnglishGermanCroatianSerbianBosnianBulgarianCzechFinnishFrenchGerman (Austria)HungarianItalianJapaneseLithuanianNorwegianPolishRussianSerbian (cyrillic)SlovakSpanishSwedishTurkishUndeterminedUnknown Search in: RUNG    AU - School of Arts    FAN - Faculty of Applied Sciences    FH - Faculty of Humanities    FN - School of Science    FPŠ - Graduate School    FVV - School for Viticulture and Enology    FZO - Faculty of Environmental Sciences    PTF - Faculty of Engineering and Management    UNG - University of Nova Gorica    VŠU - School of Arts    VŠVV - College of Viticulture and EnologyCOBISS    Univerza v Novi Gorici Options: Show only hits with full text Reset

 1 - 1 / 11 1.Tidal Disruption Events seen through the eyes of Vera C. Rubin ObservatoryKatja Bučar Bricman, 2021, doctoral dissertationAbstract: Tidal Disruption Events (TDEs) are rare transients, which are considered to be promising tools in probing supermassive black holes (SMBHs) and their environments in quiescent galaxies, accretion physics, and jet formation mechanisms. The majority of $\approx$ 60 detected TDEs has been discovered with large field of view time-domain surveys in the last two decades. Currently, about 10 TDEs are discovered per year, and we expect this number will increase largely once the Legacy Survey of Space and Time (LSST) at Vera C. Rubin Observatory begins its observations. In this work we demonstrate and explore the capabilities of the LSST to study TDEs. To begin with, we simulate LSST observations of TDEs over $10$ years of survey duration by including realistic SED models from MOSFiT into the simulation framework of the LSST. SEDs are then converted into observed fluxes and light curves are simulated with the LSST observing strategy minion_1016. Simulated observations are used to estimate the number of TDEs the LSST is expected to observe and to assess the possibility of probing the SMBH mass distribution in the Universe with the observed TDE sample. We find that the LSST has a potential of observing ~1000 TDEs per year, the exact number depending on the SMBH mass distribution and the adopted observing strategy. In spite of this large number, we find that probing the SMBH mass distribution with LSST observed TDEs will not be straightforward, especially at the low-mass end. This is largely attributed to the fact that TDEs caused by low-mass black holes ($\le 10^6 M_\odot$) are less luminous and shorter than TDEs by heavier SMBHs ($> 10^6 M_\odot$), and the probability of observationally missing them with LSST is higher. Second, we built a MAF TDE metric for photometric identification of TDEs based on LSST data. We use the metric to evaluate the performance of different proposed survey strategies in identifying TDEs with pre-defined identification requirements. Since TDEs are blue in color for months after peak light, which separates them well from SNe and AGN, we include u-band observations as one of the criteria for a positive identification. We find that the number of identified TDEs strongly depends of the observing strategy and the number of u-band visits to a given field in the sky. Observing strategies with a larger number of u-band observations perform significantly better. For these strategies up to 10% of LSST observed TDEs satisfy the identification requirements.Found in: ključnih besedahSummary of found: ...Ground-based ultraviolet, optical and infrared telescopes Astronomical catalogs, atlases, sky...Keywords: Ground-based ultraviolet, optical and infrared telescopes Astronomical catalogs, atlases, sky surveys, databases, retrieval systems, archives, Black holes, Galactic nuclei (including black holes), circumnuclear matter, and bulges, Infall, accretion, and accretion disksPublished: 03.01.2022; Views: 482; Downloads: 13 Fulltext (124,61 MB)
Search done in 0 sec.