Orphan optical flare as SOSS emission afterglow, localization in time

Bibcode
2022MNRAS.516.4980L
DOI
10.1093/mnras/stac1906
Lipunov, V.; Kornilov, V.; Zhirkov, K.; Tyurina, N.; Gorbovskoy, E.; Vlasenko, D.; Simakov, S.; Topolev, V.; Francile, C.; Podesta, R.; Podesta, F.; Svinkin, D.; Budnev, N.; Gress, O.; Balanutsa, P.; Kuznetsov, A.; Chasovnikov, A.; Serra-Ricart, M.; Gabovich, A.; Minkina, E.; Antipov, G.; Svertilov, S.; Tlatov, A.; Senik, V.; Tselik, Yu; Kechin, Ya; Yurkov, V.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society

Advertised on:
11
2022
Journal
Monthly Notices of the Royal Astronomical Society
Number of authors
27
IAC number of authors
1
Citations
3
Refereed citations
3
Description
We report on MASTER optical observations of an afterglow-like optical and X-ray transient AT2021lfa/ZTF21aayokph. We detected the initial steady brightening of the transient at 7σ confidence level. This allowed us to use smooth optical self-similar emission of GRBs model to constrain the explosion time to better than 14 min as well as to estimate its initial Lorentz factor Γ0 = 20 ± 10. Taking into consideration the low Γ0 and non-detection in gamma-rays, we classify this transient as the first failed GRB afterglow.
Type
Refereed
Black holes

It may interest you

  • Refereed
    An ultra-short-period super-Earth with an extremely high density and an outer companion
    We present the discovery and characterization of a new multi-planetary system around the Sun-like star K2-360 (EPIC 201595106). K2-360 was first identified in K2 photometry as the host of an ultra-short-period (USP) planet candidate with a period of 0.88 d. We obtained follow-up transit photometry, confirming the star as the host of the signal
    Livingston, John H. et al.

    Advertised on:

    11
    2024
    Bibcode
    2024NatSR..1427219L
    Citations
    0
  • Refereed
    Neural calibration of imaging Stokes polarimeters
    Current polarimetric calibration techniques derive the instrument modulation matrix by numerically fitting an instrumental model to measurements of a set of calibration Stokes vectors. These techniques are typically limited to an error on the retrieved normalized Stokes Q, U and V parameters, in the $1\times10^{-2}$ to $1\times10^{-3}$ range. This
    Iglesias, F. A. et al.

    Advertised on:

    8
    2024
    Bibcode
    2024BAAA...65..281I
    Citations
    0
  • Refereed
    Model-based identification of solar coronal mass ejections using deep neural networks
    Coronal mass ejections (CMEs) are a major driver of space weather and thus can have important negative technological and social impacts. To assess their geoeffectiveness once they are ejected, it is crucial their prompt identification in coronagraph images. In the last decade, deep neural networks (DNN) have experienced enormous improvements in
    Iglesias, F. A. et al.

    Advertised on:

    8
    2024
    Bibcode
    2024BAAA...65...17I
    Citations
    0