SIMBAD references

2023A&A...670A.144M - Astronomy and Astrophysics, volume 670A144 (2023/2-1)

GRB 210619B optical afterglow polarization.

MANDARAKAS N., BLINOV D., AGUILERA-DENA D.R., ROMANOPOULOS S., PAVLIDOU V., TASSIS K., ANTONIADIS J., KIEHLMANN S., LYCHOUDIS A. and TSEMPEROF KATAIVATIS L.F.

Abstract (from CDS):


Aims. We report on the follow-up of the extremely bright long gamma-ray burst (GRB) GRB 210619B with optical polarimetry.
Methods. We conducted optopolarimetric observations of the optical afterglow of GRB 210619B in the SDSS-r band in the time window ∼5967 - 8245 s after the burst, using the RoboPol instrument at the Skinakas observatory.
Results. We report a 5σ detection of polarization P = 1.5 ± 0.3 at polarization angle EVPA = 8 ± 6°. We find that during our observations, the polarization is likely constant. These values have been corrected for polarization induced by the interstellar medium of the Milky Way and host-induced polarization is likely negligible. Thus the polarization we quote is intrinsic to the GRB afterglow.

Abstract Copyright: © The Authors 2023

Journal keyword(s): polarization - relativistic processes - methods: observational - techniques: polarimetric - gamma-ray burst: individual: GRB210619B - gamma rays: stars

Simbad objects: 6

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