206 citations · 565 across the 15 of their papers we have counts for
15 papers
Hα clarifies picture of IIn supernova SN 2015da
Nikolai Chugai
Observational data on type IIn supernova SN 2015da are revisited to clarify some ambiguous issues of this phenomenon. The H alpha--emitting site is found to switch around day 90 fr…
Puzzle of [Ar II] 7 mcm line broad component of SN 1987A
Nikolai N. Chugai, Victor P. Utrobin
We explore the origin of the broad component of the [Ar II] 7 mcm line emission related to the ejecta excitation by the neutron star of SN 1987A. We argue that the line broad wings…
Origin of broad He II 4686Å emission in early spectra of type IIP supernovae
Nikolai Chugai, Victor Utrobin
We propose a model for the origin of the broad He II 4686A emission in the early spectrum of type II SN~2020jfo. The 4686A line is emitted presumably by dense fragments embedded in…
SN 2011ht: Weak explosion in massive extended envelope
N. N. Chugai
A possibility is explored to account for the light curve and the low expansion velocity of the supernova SN~2011ht, a member of group of three objects showing signatures of both II…
Gamma-rays from Type Ia supernova SN2014J
E. Churazov, R. Sunyaev, J. Isern +8
The whole set of INTEGRAL observations of type Ia supernova SN2014J, covering the period 19-162 days after the explosion has being analyzed. For spectral fitting the data are split…
Parameters of type IIP SN 2012A and clumpiness effects
V. P. Utrobin, N. N. Chugai
The explosion energy and the ejecta mass of a type IIP supernova (SN IIP) derived from hydrodynamic simulations are principal parameters of the explosion theory. However, the numbe…