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1.
New Frontiers in Black Hole Astrophysics
2017, zbornik recenziranih znanstvenih prispevkov na mednarodni ali tuji konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...holes, active galactic nuclei, gamma ray bursts, tidal disruption events, gravitational waves...
Ključne besede: astronomy, black holes, active galactic nuclei, gamma ray bursts, tidal disruption events, gravitational waves
Objavljeno: 17.08.2017; Ogledov: 842; Prenosov: 0
.pdf Polno besedilo (106,73 KB)

2.
Tidal disruption events from different kinds of astrophysical objects: a preliminary analysis
Aurora Clerici, Andreja Gomboc, 2017, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Ključne besede: astronomy, tidal disruption events, black holes
Objavljeno: 17.08.2017; Ogledov: 1075; Prenosov: 0
.pdf Polno besedilo (221,17 KB)

3.
Simulations of Tidal Disruption Events Observations with the LSST
Katja Bricman, 2017, magistrsko delo

Opis: The Large Synoptic Survey Telescope (LSST) will produce a multi-colour survey of 25000 square deg of the Southern sky during its 10 years of operations. It will observe over 20 billion galaxies and a similar number of stars, map the Solar System and the Milky Way, and probe dark matter and dark energy. In addition, it will discover thousands of transients every night, including new classes of objects, which have not yet been observed. Due to its large coverage of the sky it will be a perfect tool for the search of rare Tidal Disruption Events (TDEs), which occur when a star passes close by a supermassive black hole and gets disrupted by its tidal force. Afterwards the stellar debris fall back to the black hole, initially at a rate exceeding the Eddington rate, producing an outflow, which releases a flare of energy. When the fallback rate subsides below the Eddington rate, the gas accretes onto the black hole via accretion disk. The LSST simulation framework enables us to simulate observations of different types of objects with the LSST. In this work, we include TDEs in the LSST simulation framework, estimate the number of detected TDEs, and simulate their light curves using a theoretical model, which predicts a t^(-2.6) light curve decline with time in the outflow phase and a t^{-0.4} decline in the disk phase. We also take a closer look at the distribution of the detected TDEs over cosmological redshift and black hole mass.
Najdeno v: ključnih besedah
Ključne besede: Astronomical observations, Large Synoptic Survey Telescope, Tidal Disruption Events, Black Holes, simulations
Objavljeno: 17.10.2017; Ogledov: 796; Prenosov: 0
.pdf Polno besedilo (8,73 MB)

4.
Sifting for Sapphires: Systematic Selection of Tidal Disruption Events in iPTF
Tanja Petrushevska, 2018, izvirni znanstveni članek

Najdeno v: ključnih besedah
Ključne besede: tidal disruption events
Objavljeno: 02.10.2018; Ogledov: 346; Prenosov: 0
.pdf Polno besedilo (2,11 MB)

5.
Flares from the centers of galaxies with Gaia and OGLE surveys
Nada Ihanec, 2018, magistrsko delo

Opis: Modern wide-field-of-view and all-sky satellites (e.g. Gaia) and ground based surveys (e.g. OGLE) repeatedly cover a large part of the sky and are detecting new, transient astrophysical sources on daily basis. In this thesis I analyzed the data from Gaia and OGLE transient surveys, with special focus on transients located near the centres of galaxies to detect possible Tidal Disruption Events. These occur when a star gets too close to a Super-Massive Black Hole, which lurks in the centres of most galaxies, and gets disrupted due to the black hole's gravitational tidal forces. The goal of my research was to detect possible Tidal Disruption Events and eliminate false candidates, such as supernovae. The work involved daily inspection of new alerts, identified with Gaia and OGLE Transient Detection System. I searched for potential transients in galactic nuclei and in case there was such a transient detected, follow-up spectroscopic observations were initiated in order to help classify the object. During the course of my work I analyzed spectra obtained with the largest telescopes in the world (SALT, VLT) and performed the spectral template matching, recognition of spectral features related to known classes of transients, determination of redshift etc.
Najdeno v: ključnih besedah
Povzetek najdenega: ...the centres of galaxies to detect possible Tidal Disruption Events. These occur when a star...
Ključne besede: Flares, transients, Gaia, OGLE, supernovae, tidal disruption events, nuclear transients
Objavljeno: 14.05.2019; Ogledov: 296; Prenosov: 13
.pdf Polno besedilo (8,11 MB)

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