11. Space-time ripplesTaj Jankovič, 2017, strokovni članek Opis: Recent first direct detection of gravitational waves opened a new window on the universe. Gravitational waves arise from small perturbations of space-time and from their characteristics it is possible to determine properties of astrophysical objects from which they originate. In this seminar Einstein equation is introduced to describe gravitational waves and ascertain their properties. Furthermore, possible astrophysical sources are presented, as well as the first directly and indirectly detected event.
Najdeno v: osebi
Ključne besede: gravitation, gravitational waves, theory of relativity, astrophysics
Objavljeno: 29.07.2021; Ogledov: 1117; Prenosov: 0 |
12. The mass fallback rate of the debris in relativistic stellar tidal disruption eventsTaj Jankovič, 2022, objavljeni povzetek znanstvenega prispevka na konferenci Opis: Highly energetic stellar tidal disruption events (TDEs) provide a way to study black hole characteristics and their environment. We simulate TDEs in a general relativistic and Newtonian description of a supermassive black hole's gravity. Stars, which are placed on parabolic orbits with different impact parameters, are constructed with the stellar evolution code MESA and therefore have realistic stellar density profiles. We focus our analysis on the mass fallback rate of the debris, which can trace the observed light curve of TDEs. I will present the dependence of the mass fallback rate of the debris on the impact parameter, stellar mass and age as well as the black hole's spin and the choice of the gravity's description.
Najdeno v: osebi
Ključne besede: black hole physics, hydrodynamics, relativistic processes
Objavljeno: 21.10.2022; Ogledov: 352; Prenosov: 2
 Polno besedilo (15,78 MB)
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14. The rise and fall of the iron-strong nuclear transient PS16dtmTaj Jankovič, 2022, objavljeni povzetek znanstvenega prispevka na konferenci Opis: Thanks to the advent of large-scale optical surveys, a diverse set of flares from the nuclear regions of galaxies has recently been discovered. These include the disruption of stars by supermassive black holes at the centres of galaxies - nuclear transients known as tidal disruption events (TDEs). Active galactic nuclei (AGN) can show extreme changes in the brightness and emission line intensities, often referred to as changing-look AGN (CLAGN). Given the physical and observational similarities, the interpretation and distinction of nuclear transients as CLAGN or TDEs remains difficult. One of the obstacles of making progress in the field is the lack of well-sampled data of long-lived nuclear outbursts in AGN. I will present PS16dtm, a nuclear transient in a Narrow Line Seyfert 1 (NLSy1) galaxy which has been proposed to be a TDE candidate. I will show our multi-year spectroscopic and photometric study of PS16dtm, which can help us to better understand the outbursts originating in NLSy1 galaxies.
Najdeno v: osebi
Ključne besede: supermassive black holes, active galactic nuclei, transients
Objavljeno: 09.11.2022; Ogledov: 238; Prenosov: 3
Polno besedilo (4,96 MB)
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15. Barve v filmuAlen Dolšak, 2021, diplomsko delo Opis: V pričujočem diplomskem delu sem predstavil potek celotnega postopka barvne obdelave filma, orodja, ki jih uporabljamo pri tem postopku, ter osnovno znanje, ki ga potrebujemo za barvno obdelavo filma.
Poleg tega sem se dotaknil teorije barve ter razumevanja, kako barve delujejo kot pripovedovalno sredstvo na podzavestno (čustveno) raven.
Opis procesov je razdeljen na dva dela, in sicer na opis procesa, ki izvaja večina študentov, ter opis procesa, ki sem ga sam uporabljal zaradi posebnih ciljev, ki sem si jih zadal za svoj praktični del diplomske naloge.
V zadnjem delu diplomske naloge sem opisal cilje svojega praktičnega dela, filma z naslovom Preden odideš, kako sem jih dosegel ter težave, na katere sem naletel med montažo filma.
Najdeno v: osebi
Ključne besede: barvna korekcija, barvni prostor, LUT, logaritmični zapis, HDR, video montaža
Objavljeno: 20.12.2021; Ogledov: 1124; Prenosov: 57
Polno besedilo (1,58 MB) |
