Revealing the characteristics of the dark GRB 150309A: Dust extinguished or high-z?

Context. Dark gamma-ray bursts (GRBs) constitute a significant fraction of the GRB population. In this paper, we present a multi-wavelength analysis (both prompt emission and afterglow) of an intense (3.98  ×  10−5 erg cm−2 using Fermi-Gamma-Ray Burst Monitor) two-episodic GRB 150309A observed early...

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Bibliographic Details
Authors: Castro-Tirado, Alberto J., Gupta, R., Pandey, S. B., Nicuesa Guelbenzu, A., Eikenberry, S., Ackley, K., Gerarts, A., Valeev, A. F., Jeong, S., Park, I. H., Oates, S. R., Zhang, B. -B., Sánchez Ramírez, Rubén, Martín-Carrillo, A., Tello, J. C., Jelínek, M., Hu, Y. D., Cunniffe, R., Sokolov, V. V., Guziy, Sergey, Ferrero, P., Caballero-García, María Dolores, Ror, A. K., Aryan, A., Castro Tirado, Miguel Ángel, Fernández-García, E., Gritsevich, M., Olivares, I., Pérez-García, I., Castro Cerón, J. M., Cepa, J.
Format: article
Status:Published version
Publication Date:2024
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::27f803cef58c150b00c65e8ac3accd9e
Online Access:http://hdl.handle.net/10261/370278
Access Level:Open access
Keyword:Techniques: photometric
Gamma-ray burst: general
Gamma-ray burst: individual: GRB 150309a
Description
Summary:Context. Dark gamma-ray bursts (GRBs) constitute a significant fraction of the GRB population. In this paper, we present a multi-wavelength analysis (both prompt emission and afterglow) of an intense (3.98  ×  10−5 erg cm−2 using Fermi-Gamma-Ray Burst Monitor) two-episodic GRB 150309A observed early on until ∼114 days post burst. Despite the strong gamma-ray emission, no optical afterglow was detected for this burst. However, we discovered near-infrared (NIR) afterglow (KS-band), ∼5.2 h post burst, with the CIRCE instrument mounted at the 10.4 m Gran Telescopio Canarias (hereafter, GTC).

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