4 papers
Earliest simultaneous multi-color optical observations of GRB 230328B: from 41 seconds to the host-galaxy identification
T. Komesh, A. Pozanenko, N. Pankov +36
We present a multiwavelength study of the long-duration gamma-ray burst GRB 230328B, combining prompt gamma-ray observations with exceptionally early simultaneous optical photometr…
GRB 140423A: A Case of Stellar Wind to Interstellar Medium Transition in the Afterglow
Long Li, Xiang-Gao Wang, WeiKang Zheng +14
We present very early ground-based optical follow-up observations of GRB~140423A, which was discovered by \emph{Swift}/BAT and by {\it Fermi}/GBM. Its broadband afterglow was monit…
A new method based on the subpixel Gaussian model for accurate estimation of asteroid coordinates
V. E. Savanevych, O. B. Briukhovetskyi, N. S. Sokovikova +8
We describe a new iteration method to estimate asteroid coordinates, which is based on the subpixel Gaussian model of a discrete object image. The method operates by continuous par…
SN 2008fv: the third type Ia supernova in NGC 3147
D. Yu. Tsvetkov, L. Elenin
Multiple outbursts of type Ia SNe in one galaxy present a unique opportunity to study the homogeneity of these objects. NGC 3147 is only the second known galaxy with three SNe Ia,…