The GROND gamma-ray burst sample: I. Overview and statistics

J. Greiner; T. Krühler; J. Bolmer; S. Klose; P. M.J. Afonso; J. Elliott; R. Filgas; J. F. Graham; D. A. Kann; F. Knust; A. Küpcü Yoldaş; M. Nardini; A. M. Nicuesa Guelbenzu; F. Olivares Estay; A. Rossi; P. Schady; T. Schweyer; V. Sudilovsky; K. Varela; P. Wiseman

doi:10.1051/0004-6361/202449659

The GROND gamma-ray burst sample: I. Overview and statistics

J. Greiner, T. Krühler, J. Bolmer, S. Klose, P. M.J. Afonso, J. Elliott, R. Filgas, J. F. Graham, D. A. Kann, F. Knust, A. Küpcü Yoldaş, M. Nardini, A. M. Nicuesa Guelbenzu, F. Olivares Estay, A. Rossi, P. Schady, T. Schweyer, V. Sudilovsky, K. Varela, P. Wiseman

Research output: Contribution to journal › Article › peer-review

Abstract

A dedicated gamma-ray burst (GRB) afterglow observing program was performed between 2007 and 2016 with GROND, a seven-channel optical and near-infrared imager at the 2.2m telescope of the Max-Planck Society at ESO/La Silla, In this first of a series of papers, we describe the GRB observing plan, providing first readings of all so far unpublished GRB afterglow measurements and some observing statistics. In total, we observed 514 GRBs with GROND, including 434 Swift-detected GRBs, representing 81% of the observable Swift sample. For GROND-observations within 30 min of the GRB trigger, the optical/NIR afterglow detection rate is 81% for long- and 57% for short-duration GRBs. We report the discovery of ten new GRB afterglows plus one candidate, along with redshift estimates (partly improved) for four GRBs and new host detections for seven GRBs. We identify the (already known) afterglow of GRB 140209A as the sixth GRB exhibiting a 2175 Å dust feature. As a side result, we identified two blazars, with one at a redshift of z=3.8 (in the GRB 131209A field).

Original language	English
Article number	A158
Journal	Astronomy and Astrophysics
Volume	691
Early online date	11 Nov 2024
DOIs	https://doi.org/10.1051/0004-6361/202449659
Publication status	Published - 30 Nov 2024

Data Availability Statement

Tables A.2 and B.1 are available at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (130.79.128.5) or via https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A158
1

http://www.sdss.org
2

https://www2.ifa.hawaii.edu/research/Pan-STARRS.shtml
3

http://skymapper.anu.edu.au
4

See https://www.mpe.mpg.de/~jcg/grbgen.html for a complete list.
5

The reasons for this mismatch could be, among others, (1) it actually provides luminosities, not fluxes; the folding with the distances changes the flux distribution (statistically, many nearby GRBs are sub-luminous); (2) their sample is based on a brightness-cut of the γ-ray emission, i.e. fainter GRBs are purposely omitted; (3) their sample is a factor 10 smaller, implying that a lesser amount of extremes (at both ends of the distribution) were sampled.
6

https://www.mpe.mpg.de/~jcg/grbgen.html
7

https://www.swift.ac.uk/xrt_positions/

Acknowledgements

This publication is dedicated to David Alexander Kann who passed away in 2023 at the age of 46, just a day after some of us had the chance to discuss recent GRB news with him. Being a member of the GROND team since 2011, Alex was our encyclopedic dictionary for nearly every GRB mentioned herein. He was eagerly anticipating this manuscript, but we were too late. We deeply miss him and will always remember him.

Funding

SK acknowledges support by DFG grants Kl 766/11-3, 13-1 and 13-2. Part of the funding for GROND (both hardware as well as personnel) was generously granted from the Leibniz-Prize to Prof. G. Hasinger (DFG grant HA 1850/28-1). This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. Facilities: Max Planck:2.2m (GROND), Swift.

Keywords

Gamma rays: Stars
Gamma-ray burst: General

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1051/0004-6361/202449659Licence: CC BY

Cite this

Greiner, J., Krühler, T., Bolmer, J., Klose, S., Afonso, P. M. J., Elliott, J., Filgas, R., Graham, J. F., Kann, D. A., Knust, F., Küpcü Yoldaş, A., Nardini, M., Nicuesa Guelbenzu, A. M., Olivares Estay, F., Rossi, A., Schady, P., Schweyer, T., Sudilovsky, V., Varela, K., & Wiseman, P. (2024). The GROND gamma-ray burst sample: I. Overview and statistics. Astronomy and Astrophysics, 691, Article A158. https://doi.org/10.1051/0004-6361/202449659

Greiner, J, Krühler, T, Bolmer, J, Klose, S, Afonso, PMJ, Elliott, J, Filgas, R, Graham, JF, Kann, DA, Knust, F, Küpcü Yoldaş, A, Nardini, M, Nicuesa Guelbenzu, AM, Olivares Estay, F, Rossi, A, Schady, P, Schweyer, T, Sudilovsky, V, Varela, K & Wiseman, P 2024, 'The GROND gamma-ray burst sample: I. Overview and statistics', Astronomy and Astrophysics, vol. 691, A158. https://doi.org/10.1051/0004-6361/202449659

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AU - Afonso, P. M.J.

AU - Elliott, J.

AU - Filgas, R.

AU - Graham, J. F.

AU - Kann, D. A.

AU - Knust, F.

AU - Küpcü Yoldaş, A.

AU - Nardini, M.

AU - Nicuesa Guelbenzu, A. M.

AU - Olivares Estay, F.

AU - Rossi, A.

AU - Schady, P.

AU - Schweyer, T.

AU - Sudilovsky, V.

AU - Varela, K.

AU - Wiseman, P.

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The GROND gamma-ray burst sample: I. Overview and statistics

Abstract

Data Availability Statement

Acknowledgements

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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