Multi-wavelength view on astrophysical objects

The main objective of the course is to provide students with a comprehensive understanding of how astrophysical objects are studied across the electromagnetic spectrum, and to equip them with the necessary skills for the analysis and interpretation of multi-wavelength data.

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1. Frontal lectures
   • Astrophysical objects with multi-wavelength emission: core- collapse supernovae, thermonuclear supernovae, active galactic nuclei, and tidal disruption events.
   • Overview of the properties of major modern telescopes, upcoming facilities, and all-sky surveys.

2. Tutorials (data analysis and interpretation)
   • Optical and near-infrared image reduction (ground-based and space- based data), image alignment and differencing, identification of transient sources, visualization and fitting of transient light curves.
   • Photometry: photometric calibration, aperture and PSF-fitting methods.
   • Spectroscopy: extraction of spectra and classification of astrophysical sources.
   • SED fitting of galaxies using multi-wavelength data.
   • Observations in gamma and X- rays: targets, detectors, and the most important contemporary instruments.
   • Telescope proposal preparation, including exposure time calculators for ground-based facilities and space telescopes (e.g. JWST).

• Understand the main classes of astrophysical sources observable at different wavelengths.
• Be familiar with modern telescopes, surveys, and future facilities.
• Apply basic methods of photometry, spectroscopy, and transient source identification.
• Construct and interpret transient light curves from multi-wavelength data.
• Apply spectral energy distribution (SED) fitting to galaxies and derive key physical parameters.
• Analyze gamma-ray data of astrophysical sources.
• Understand the process of telescope proposal preparation.

• The physics and evolution of Active galactic nuclei - Hagai Netzer (2013) Catalogue
• Supernova Explosions / David Branch and J. Craig Wheeler. Springer-Verlag GmbH Germany 2017 ISBN: 978-3-662-55052-6 Catalogue

• seminar
• oral exam

Dr. Tanja Petrushevska je docentka za področje astrofizika na Univerzi v Novi Gorici.
Dr. Tanja Petrushevska is assistant professor of astrophysics at the University of Nova Gorica. Her research interests lie in the field of observational astrophysics and cosmology, especially time domain astronomy.
Five most recent publications (more here: COBISS profile)
1. Gkini, A., et al. Eruptive mass loss less than a year before the explosion of superluminous supernovae. Astronomy & Astrophysics 694 (Feb 2025), A292, 1–28. ISSN 1432-0746.
2. Salmaso, I., et al. The diversity of strongly interacting Type IIn supernovae. Astronomy & Astrophysics 695 (Mar 2025), A29, 1–23. ISSN 1432-0746.
3. Bronikowski, M.; Petrushevska, T., et al. Cluster-lensed supernova yields from the Vera C. Rubin Observatory and Nancy Grace Roman Space Telescope. Astronomy & Astrophysics 697 (May 2025), A146, 20 pp. ISSN 1432-0746.
4. Jankovič, T.; Gomboc, A.; Wyrzykowski, Ł.; Kostić, U.; Karlica, M.; Larma, M.; Petrushevska, T.; Bronikowski, M., et al. Astrometry-only detection of microlensing events with Gaia. Astronomy & Astrophysics 699 (Jul 2025), A156, 14 pp., illustr. ISSN 1432-0746.
5. Nagao, T.; Reynolds, T. M.; Kuncarayakti, H.; Cartier, R.; Mattila, S.; Maeda, K.; Sollerman, J.; Pessi, P. J.; Anderson, J. P.; Petrushevska, T., et al. Observational diversity of bright long-lived Type II supernovae. Astronomy & Astrophysics 699 (Jul 2025), A283, 16 pp., illustr. ISSN 1432-0746.