1. Four GRB supernovae at redshifts between 0.4 and 0.8. The bursts GRB 071112C, 111228A, 120714B, and 130831A
- Author
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Adria C. Updike, J. P. U. Fynbo, David Alexander Kann, Arne Rau, Andrea Rossi, Karla Varela, Patricia Schady, Steve Schulze, K. Takats, A. Nicuesa Guelbenzu, R. Filgas, Thomas Krühler, Jochen Greiner, P. M. J. Afonso, S. Schmidl, S. Klose, M. Tanga, Ministerio de Economía y Competitividad (España), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), European Commission, Alexander von Humboldt Foundation, Thuringian Ministry of Education, Science and Culture, German Research Foundation, Max Planck Institute for extraterrestrial Physics, Friedrich Schiller University Jena, Thüringer Landessternwarte Tautenburg Karl Schwarzschild-Observatorium, ITA, USA, GBR, DEU, CHL, DNK, and ISR
- Subjects
individual: SN 2013fu [Supernovae] ,Astrophysics ,individual: GRB 071112C [Gamma-ray burst] ,01 natural sciences ,0103 physical sciences ,010303 astronomy & astrophysics ,individual: SN 2012eb [Supernovae] ,Physics ,Very Large Telescope ,Gamma-ray burst: individual: GRB 071112C ,GRB 980425 ,010308 nuclear & particles physics ,Supernovae: individual: SN 2013fu ,Gamma-ray burst: individual: GRB 120714B ,Astronomy and Astrophysics ,Gamma-ray burst: individual: GRB 130831A ,Light curve ,Gamma-ray burst: individual: GRB 111228A ,Galaxy ,Redshift ,Afterglow ,individual: GRB 111228A [Gamma-ray burst] ,Supernova ,individual: GRB 130831A [Gamma-ray burst] ,Space and Planetary Science ,Supernovae: individual: SN 2012eb ,Gamma-ray burst ,individual: GRB 120714B [Gamma-ray burst] - Abstract
Twenty years ago, GRB 980425/SN 1998bw revealed that long gamma-ray bursts (GRBs) are physically associated with broad-lined type-Ic supernovae (SNe). Since then more than 1000 long GRBs have been localized to high angular precision, but only in ~50 cases has the underlying SN component been identified. Using the Gamma-Ray Burst Optical Near-Infrared Detector (GROND) multi-channel imager at ESO/La Silla, during the last ten years we have devoted a substantial amount of observing time to reveal and study SN components in long-GRB afterglows. Here we report on four more GRB SNe (associated with GRBs 071112C, 111228A, 120714B, and 130831A) which were discovered and/or followed-up with GROND and whose redshifts lie between z¿=¿0.4 and 0.8. We study their afterglow light curves, follow the associated SN bumps over several weeks, and characterize their host galaxies. Using SN 1998bw as a template, the derived SN explosion parameters are fully consistent with the corresponding properties of the currently known GRB-SN ensemble, with no evidence for an evolution of their properties as a function of redshift. In two cases (GRB 120714B/SN 2012eb at z¿=¿0.398 and GRB 130831A/SN 2013fu at z¿=¿0.479) additional Very Large Telescope (VLT) spectroscopy of the associated SNe revealed a photospheric expansion velocity at maximum light of about 40 000 and 20 000 km s¿1, respectively. For GRB 120714B, which was an intermediate-luminosity burst, we find additional evidence for a black-body component in the light of the optical transient at early times, similar to what has been detected in some GRB SNe at lower redshifts.© ESO 2019., S.K., Sebastian S., and A.N.G. acknowledge support by the Thuringer Ministerium fur Bildung, Wissenschaft und Kultur under FKZ 12010-514. S.K.,Sebastian S., A.N.G., and D.A.K. acknowledge support by grant DFG Kl 766/16-3. A.N.G., A.R., D.A.K., and A.U. are grateful for travel funding support through MPE Garching. A.R. acknowledges additional support by the Jenaer Graduiertenakademie, by TLS Tautenburg and DFG Kl/766 13-2. D.A.K. acknowledges support by TLS Tautenburg and MPE Garching, as well as support from the Spanish research project AYA 2014-58381-P and Juan de la Cierva Incorporacion IJCI-2015-26153. P.S. and T.K. acknowledges support through the Sofja Kovalevskaja Award to P.S. from the Alexander von Humboldt Foundation of Germany. R.F. acknowledges support from European Regional Development Fund-Project >Engineering applications of microworld physics> (No. CZ. 02.1.01/0.0/0.0/16 019/0000766). F.O.E. acknowledge support from the FONDECYT grant #11170953. Support for F.O.E. is provided by the Ministry of Economy, Development, and Tourism's Millennium Science Initiative through grant IC120009, awarded to The Millennium Institute of Astrophysics, MAS. The Cosmic Dawn center is funded by the DNRF. Part of the funding for GROND (both hardware and personnel) was generously granted by the LeibnizPrize to G. Hasinger (DFG grant HA 1850/28-1).
- Published
- 2019