1. Hevreka (Supernove tipa 1a)Tanja Petrushevska, Japelj Jure, radio or television broadcast, podcast, interview, press conference Abstract: V vesolju tudi poka kot za stavo. Zvezde, ki večino življenja ne počnejo nič drugega kot spreminjajo vodik v helij, si včasih zaželijo pozornosti in eksplodirajo kot supernove. Zvezda kar naenkrat postana svetlejša od celotne galaksije, zato supernove vidimo tudi, ko eksplodirajo daleč, daleč stran. Astronomi vesoljski ognjemet seveda z veseljem opazujejo. Supernove namreč niso zgolj izjemno svetle, ampak igrajo pomembno vlogo pri številnih procesih v vesolju. Kozmične eksplozije so različnih tipov in okusov, verjetno najbolj slavne med njimi pa so supernove tipa 1a. Te nam je približala doktorica Tanja Petrushevska, docentka na Fakulteti za naravoslovje Univerze v Novi Gorici. Pred mikrofon jo je povabil dr. Jure Japelj. Keywords: radio, intervju, supernova Published in RUNG: 24.11.2023; Views: 513; Downloads: 1 Link to file This document has many files! More... |
2. A population of Type Ibc supernovae with massive progenitors : broad lightcurves not uncommon in (i)PTFE. Karamehmetoglu, Jesper Sollerman, F. Taddia, C. Barbarino, U. Feindt, U. C. Fremling, Avishay Gal-Yam, M. M. Kasliwal, Tanja Petrushevska, S. Schulze, 2023, original scientific article Keywords: astronomy, supernova progenitors Published in RUNG: 10.10.2023; Views: 561; Downloads: 4 Full text (3,30 MB) This document has many files! More... |
3. Potential of the Cherenkov Telescope Array for studying the young nearby supernova remnantsDmitry A. Prokhorov, Saptashwa Bhattacharyya, Judit Pérez Romero, Samo Stanič, Veronika Vodeb, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Miha Živec, 2023, published scientific conference contribution Abstract: Modern imaging atmospheric Cherenkov telescopes have extensively observed young nearby su-pernova remnants (SNRs), with ages of about 1000 years or less, in the very-high-energy (VHE) gamma-ray band. These efforts resulted in the detection of VHE emission from three young SNRs – Cassiopeia A, Tycho, and SN 1006 – and provided significant evidence for emission from the more distant Kepler’s SNR. However, many questions on the production of VHE gamma rays in these remnants remain unanswered. Using detailed physical models for Tycho’s SNR based on the CR-hydro-NEI code and physically motivated models for the other young nearby remnants, we simulated observations with the Cherenkov Telescope Array (CTA) of these gamma-ray sources. We highlight properties of these remnants accessible for investigation with future CTA observa-tions and discuss which questions are expected to be answered. Keywords: Cherenkov Telescope Array, CTA, supernova remnants, young nearby supernova Published in RUNG: 26.09.2023; Views: 639; Downloads: 4 Full text (635,43 KB) This document has many files! More... |
4. LensWatch. I. resolved HST observations and constraints on the strongly lensed type Ia supernova 2022qmx (ʺSN Zwickyʺ)Justin Pierel, N. Arendse, S. Ertl, X. Huang, L. A. Moustakas, S. Schuldt, A. J. Shajib, Y. Shu, Mateusz Bronikowski, Tanja Petrushevska, 2023, original scientific article Keywords: supernova, strong lensing, astronomy Published in RUNG: 16.05.2023; Views: 1154; Downloads: 8 Full text (3,48 MB) This document has many files! More... |
5. Sensitivity of the Cherenkov Telescope Array to spectral signatures of hadronic PeVatrons with application to Galactic Supernova RemnantsFabio Acero, Saptashwa Bhattacharyya, Samo Stanič, Veronika Vodeb, Serguei Vorobiov, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, Miha Živec, 2023, original scientific article Keywords: gamma-rays, cosmic rays, Galactic PeVatrons, Galactic supernova remnants, Cherenkov Telescope Array Published in RUNG: 14.04.2023; Views: 1134; Downloads: 0 This document has many files! More... |
6. Cluster-lensed supernovae with the Roman Space Telescope and Vera Rubin observatoryMateusz Bronikowski, Tanja Petrushevska, Justin Pierel, 2022, published scientific conference contribution abstract Abstract: I will present our current efforts to enable the use of strongly lensed supernovae behind galaxy clusters as powerful tools to tackle several open questions in astrophysics and cosmology. As a preparatory task, we are collecting all available gravitational telescopes into a database, and estimating the properties of all reported multiply-imaged galaxies behind clusters. We are building a tool that will enable accurate estimates of cluster-lensed supernova yields for a given survey. In addition, we are developing the methods to extract the cosmological parameters from cluster-lensed supernovae in the Rubin and Roman data. Keywords: supernova, gravitational lensing, Vera Rubin Observatory, Roman Space telescope, LSST, Hubble constant Published in RUNG: 09.11.2022; Views: 1060; Downloads: 5 Link to full text This document has many files! More... |
7. Near-infrared supernova Ia distances : host galaxy extinction and mass-step corrections revisitedJ. Johansson, S. B. Cenko, O. D. Fox, S. Dhawan, Ariel Goobar, V. Stanishev, N. Butler, W. H. Lee, A. M. Watson, U. C. Fremling, Tanja Petrushevska, 2021, original scientific article Keywords: supernova, cosmology, extinction Published in RUNG: 26.01.2022; Views: 1670; Downloads: 35 Link to full text This document has many files! More... |
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