44 citations · 104 across the 11 of their papers we have counts for
12 papers
Radiation Mediated Shock and Planar Shock Breakout in the Presence of Atomic Transition Lines
Jonathan Morag
We numerically study fast Newtonian radiation mediated shocks (RMS - v/c~0.2) in two simplified problems in the context of supernova shock breakout; (1) An RMS traveling in a unifo…
On Atomic Line Opacities for Modeling Astrophysical Radiative Transfer
Jonathan Morag
In astrophysics, atomic transition line opacity is a primary source of uncertainty in theoretical calculations of radiative transfer. Much of this uncertainty is dominated by the i…
Shock-cooling Constraints via Early-time Observations of the Type IIb SN 2022hnt
Joseph R. Farah, D. Andrew Howell, Giacomo Terreran +8
We report the results of a rapid follow-up campaign on the Type IIb Supernova (SN) 2022hnt. We present a daily, multi-band, photometric follow-up using the Las Cumbres Observatory,…
Shock cooling emission from explosions of massive stars: III. Blue Super Giants
J. Morag, N. Sapir, E. Waxman
Light emission in the first hours and days following core-collapse supernovae is dominated by the escape of photons from the expanding shock-heated envelope. In preceding papers, w…
The Early Ultraviolet Light-Curves of Type II Supernovae and the Radii of Their Progenitor Stars
Ido Irani, Jonathan Morag, Avishay Gal-Yam +18
We present a sample of 34 normal SNe II detected with the Zwicky Transient Facility, with multi-band UV light-curves starting at days after explosion, as well as X-ray d…
Resolving the explosion of supernova 2023ixf in Messier 101 within its complex circumstellar environment
E. A. Zimmerman, I. Irani, P. Chen +54
Observing a supernova explosion shortly after it occurs can reveal important information about the physics of stellar explosions and the nature of the progenitor stars of supernova…
Shock cooling emission from explosions of red super-giants: II. An analytic model of deviations from blackbody emission
Jonathan Morag, Ido Irani, Nir Sapir +1
Light emission in the first hours and days following core-collapse supernovae (SNe) is dominated by the escape of photons from the expanding shock heated envelope. In a preceding p…
SN 2022oqm -- a Ca-rich explosion of a compact progenitor embedded in C/O circumstellar material
I. Irani, Ping Chen, Jonathan Morag +27
We present the discovery and analysis of SN\,2022oqm, a Type Ic supernova (SN) detected \,day after explosion. The SN rises to a blue and short-lived (2\,days) initial peak. Ea…
Shock cooling emission from explosions of red super-giants: I. A numerically calibrated analytic model
Jonathan Morag, Nir Sapir, Eli Waxman
Supernova light curves are dominated at early time, hours to days, by the escape of photons from the expanding shock heated envelope. We provide a simple analytic description of th…
The GALEX-PTF experiment: II. supernova progenitor radius and energetics via shock-cooling modeling
Noam Ganot, Eran O. Ofek, Avishay Gal-Yam +6
The radius and surface composition of an exploding massive star, as well as the explosion energy per unit mass, can be measured using early ultraviolet (UV) observations of core-co…
SN 2018fif: The Explosion of a Large Red Supergiant Discovered in Its Infancy by the Zwicky Transient Facility
Maayane T. Soumagnac, Noam Ganot, Ido Irani +32
High cadence transient surveys are able to capture supernovae closer to their first light than before. Applying analytical models to such early emission, we can constrain the proge…
What can we really learn from positron flux 'anomalies'?
Boaz Katz, Kfir Blum, Jonathan Morag +1
We present a critical analysis of the observational constraints on, and of the theoretical modeling of, aspects of cosmic ray (CR) generation and propagation in the Galaxy, which a…