A Reverse Shock in GRB 181201A
- Autores
- Laskar, Tanmoy; van Eerten, Hendrik; Schady, Patricia; Mundell, Carol; Alexander, Kate D.; Duran, Rodolfo Barniol; Berger, Edo; Bolmer, Jan; Chornock, Ryan; Coppejans, Deanne; Fong, Wen fai Fong; Gomboc, Andreja; Jordana, Nuria; Kobayashi, Shiho; Margutti, Raffaella; Menten, Karl; Sari, Reem; Yamazaki, Ryo; Lipunov, Vladimir; Gorbovskoy, Evgeniy; Kornilov, Victor; Tyurina, Nina; Zimnukhov, Dmitriy; Podestá, Ricardo César; Levato, Orlando Hugo; Buckley, David; Tlatov, Andrey; Rebolo, Rafael; Serra Ricart, Manuel
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present comprehensive multiwavelength radio to X-ray observations of GRB 181201A spanning from ≈150 s to ≈163 days after the burst, comprising the first joint ALMA-VLA-GMRT observations of a gamma-ray burst (GRB) afterglow. The radio and millimeter-band data reveal a distinct signature at ≈3.9 days, which we interpret as reverse-shock (RS) emission. Our observations present the first time that a single radio-frequency spectral energy distribution can be decomposed directly into RS and forward shock (FS) components. We perform detailed modeling of the full multiwavelength data set, using Markov Chain Monte Carlo sampling to construct the joint posterior density function of the underlying physical parameters describing the RS and FS synchrotron emission. We uncover and account for all discovered degeneracies in the model parameters. The joint RS-FS modeling reveals a weakly magnetized (σ ≈ 3 × 10-3), mildly relativistic RS, from which we derive an initial bulk Lorentz factor of Γ0 ≈ 103 for the GRB jet. Our results support the hypothesis that low-density environments are conducive to the observability of RS emission. We compare our observations to other events with strong RS detections and find a likely observational bias selecting for longer lasting, nonrelativistic RSs. We present and begin to address new challenges in modeling posed by the present generation of comprehensive, multifrequency data sets.
Fil: Laskar, Tanmoy. University of Bath; Reino Unido
Fil: van Eerten, Hendrik. University of Bath; Reino Unido
Fil: Schady, Patricia. University of Bath; Reino Unido
Fil: Mundell, Carol. University of Bath; Reino Unido
Fil: Alexander, Kate D.. Northwestern University; Estados Unidos
Fil: Duran, Rodolfo Barniol. California State University; Estados Unidos
Fil: Berger, Edo. Harvard University; Estados Unidos
Fil: Bolmer, Jan. Institut Max Planck fuer Gesellschaft. Max Planck Institute for Extraterrestrial Physics; Alemania
Fil: Chornock, Ryan. Ohio University; Estados Unidos
Fil: Coppejans, Deanne. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados Unidos. Northwestern University; Estados Unidos
Fil: Fong, Wen fai Fong. Northwestern University; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados Unidos
Fil: Gomboc, Andreja. University of Nova Gorica. Center for Astrophysics and Cosmology; Eslovenia
Fil: Jordana, Nuria. University of Bath; Reino Unido
Fil: Kobayashi, Shiho. Liverpool John Moores University;
Fil: Margutti, Raffaella. Northwestern University; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados Unidos
Fil: Menten, Karl. Max-Planck-Institut für Radioastronomie; Alemania
Fil: Sari, Reem. The Hebrew University of Jerusalem; Israel. The Hebrew University. Racah Institute of Physics; Israel
Fil: Yamazaki, Ryo. Aoyama-Gakuin University. Department of Physics and Mathematics; Japón
Fil: Lipunov, Vladimir. M. V. Lomonosov Moscow State University. Physics Department; Rusia
Fil: Gorbovskoy, Evgeniy. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia
Fil: Kornilov, Victor. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia
Fil: Tyurina, Nina. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia
Fil: Zimnukhov, Dmitriy. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia
Fil: Podestá, Ricardo César. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Departamento de Informática. Observatorio Astronómico Félix Aguilar; Argentina
Fil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Buckley, David. South African Astrophysical Observatory; Sudáfrica
Fil: Tlatov, Andrey. Pulkovo Observatory. Kislovodsk Solar Station; Rusia
Fil: Rebolo, Rafael. Instituto de Astrofísica de Canarias; España
Fil: Serra Ricart, Manuel. Instituto de Astrofísica de Canarias; España - Materia
-
Gamma-ray bursts
Transient sources - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/150128
Ver los metadatos del registro completo
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A Reverse Shock in GRB 181201ALaskar, Tanmoyvan Eerten, HendrikSchady, PatriciaMundell, CarolAlexander, Kate D.Duran, Rodolfo BarniolBerger, EdoBolmer, JanChornock, RyanCoppejans, DeanneFong, Wen fai FongGomboc, AndrejaJordana, NuriaKobayashi, ShihoMargutti, RaffaellaMenten, KarlSari, ReemYamazaki, RyoLipunov, VladimirGorbovskoy, EvgeniyKornilov, VictorTyurina, NinaZimnukhov, DmitriyPodestá, Ricardo CésarLevato, Orlando HugoBuckley, DavidTlatov, AndreyRebolo, RafaelSerra Ricart, ManuelGamma-ray burstsTransient sourceshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present comprehensive multiwavelength radio to X-ray observations of GRB 181201A spanning from ≈150 s to ≈163 days after the burst, comprising the first joint ALMA-VLA-GMRT observations of a gamma-ray burst (GRB) afterglow. The radio and millimeter-band data reveal a distinct signature at ≈3.9 days, which we interpret as reverse-shock (RS) emission. Our observations present the first time that a single radio-frequency spectral energy distribution can be decomposed directly into RS and forward shock (FS) components. We perform detailed modeling of the full multiwavelength data set, using Markov Chain Monte Carlo sampling to construct the joint posterior density function of the underlying physical parameters describing the RS and FS synchrotron emission. We uncover and account for all discovered degeneracies in the model parameters. The joint RS-FS modeling reveals a weakly magnetized (σ ≈ 3 × 10-3), mildly relativistic RS, from which we derive an initial bulk Lorentz factor of Γ0 ≈ 103 for the GRB jet. Our results support the hypothesis that low-density environments are conducive to the observability of RS emission. We compare our observations to other events with strong RS detections and find a likely observational bias selecting for longer lasting, nonrelativistic RSs. We present and begin to address new challenges in modeling posed by the present generation of comprehensive, multifrequency data sets.Fil: Laskar, Tanmoy. University of Bath; Reino UnidoFil: van Eerten, Hendrik. University of Bath; Reino UnidoFil: Schady, Patricia. University of Bath; Reino UnidoFil: Mundell, Carol. University of Bath; Reino UnidoFil: Alexander, Kate D.. Northwestern University; Estados UnidosFil: Duran, Rodolfo Barniol. California State University; Estados UnidosFil: Berger, Edo. Harvard University; Estados UnidosFil: Bolmer, Jan. Institut Max Planck fuer Gesellschaft. Max Planck Institute for Extraterrestrial Physics; AlemaniaFil: Chornock, Ryan. Ohio University; Estados UnidosFil: Coppejans, Deanne. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados Unidos. Northwestern University; Estados UnidosFil: Fong, Wen fai Fong. Northwestern University; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados UnidosFil: Gomboc, Andreja. University of Nova Gorica. Center for Astrophysics and Cosmology; EsloveniaFil: Jordana, Nuria. University of Bath; Reino UnidoFil: Kobayashi, Shiho. Liverpool John Moores University;Fil: Margutti, Raffaella. Northwestern University; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados UnidosFil: Menten, Karl. Max-Planck-Institut für Radioastronomie; AlemaniaFil: Sari, Reem. The Hebrew University of Jerusalem; Israel. The Hebrew University. Racah Institute of Physics; IsraelFil: Yamazaki, Ryo. Aoyama-Gakuin University. Department of Physics and Mathematics; JapónFil: Lipunov, Vladimir. M. V. Lomonosov Moscow State University. Physics Department; RusiaFil: Gorbovskoy, Evgeniy. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; RusiaFil: Kornilov, Victor. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; RusiaFil: Tyurina, Nina. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; RusiaFil: Zimnukhov, Dmitriy. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; RusiaFil: Podestá, Ricardo César. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Departamento de Informática. Observatorio Astronómico Félix Aguilar; ArgentinaFil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Buckley, David. South African Astrophysical Observatory; SudáfricaFil: Tlatov, Andrey. Pulkovo Observatory. Kislovodsk Solar Station; RusiaFil: Rebolo, Rafael. Instituto de Astrofísica de Canarias; EspañaFil: Serra Ricart, Manuel. Instituto de Astrofísica de Canarias; EspañaIOP Publishing2019-10-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/150128Laskar, Tanmoy; van Eerten, Hendrik; Schady, Patricia; Mundell, Carol; Alexander, Kate D.; et al.; A Reverse Shock in GRB 181201A; IOP Publishing; Astrophysical Journal; 884; 121; 20-10-2019; 112-1290004-637X1538-4357CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ab40ceinfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ab40ceinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1907.13128info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:54:49Zoai:ri.conicet.gov.ar:11336/150128instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-12 09:54:50.009CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
A Reverse Shock in GRB 181201A |
| title |
A Reverse Shock in GRB 181201A |
| spellingShingle |
A Reverse Shock in GRB 181201A Laskar, Tanmoy Gamma-ray bursts Transient sources |
| title_short |
A Reverse Shock in GRB 181201A |
| title_full |
A Reverse Shock in GRB 181201A |
| title_fullStr |
A Reverse Shock in GRB 181201A |
| title_full_unstemmed |
A Reverse Shock in GRB 181201A |
| title_sort |
A Reverse Shock in GRB 181201A |
| dc.creator.none.fl_str_mv |
Laskar, Tanmoy van Eerten, Hendrik Schady, Patricia Mundell, Carol Alexander, Kate D. Duran, Rodolfo Barniol Berger, Edo Bolmer, Jan Chornock, Ryan Coppejans, Deanne Fong, Wen fai Fong Gomboc, Andreja Jordana, Nuria Kobayashi, Shiho Margutti, Raffaella Menten, Karl Sari, Reem Yamazaki, Ryo Lipunov, Vladimir Gorbovskoy, Evgeniy Kornilov, Victor Tyurina, Nina Zimnukhov, Dmitriy Podestá, Ricardo César Levato, Orlando Hugo Buckley, David Tlatov, Andrey Rebolo, Rafael Serra Ricart, Manuel |
| author |
Laskar, Tanmoy |
| author_facet |
Laskar, Tanmoy van Eerten, Hendrik Schady, Patricia Mundell, Carol Alexander, Kate D. Duran, Rodolfo Barniol Berger, Edo Bolmer, Jan Chornock, Ryan Coppejans, Deanne Fong, Wen fai Fong Gomboc, Andreja Jordana, Nuria Kobayashi, Shiho Margutti, Raffaella Menten, Karl Sari, Reem Yamazaki, Ryo Lipunov, Vladimir Gorbovskoy, Evgeniy Kornilov, Victor Tyurina, Nina Zimnukhov, Dmitriy Podestá, Ricardo César Levato, Orlando Hugo Buckley, David Tlatov, Andrey Rebolo, Rafael Serra Ricart, Manuel |
| author_role |
author |
| author2 |
van Eerten, Hendrik Schady, Patricia Mundell, Carol Alexander, Kate D. Duran, Rodolfo Barniol Berger, Edo Bolmer, Jan Chornock, Ryan Coppejans, Deanne Fong, Wen fai Fong Gomboc, Andreja Jordana, Nuria Kobayashi, Shiho Margutti, Raffaella Menten, Karl Sari, Reem Yamazaki, Ryo Lipunov, Vladimir Gorbovskoy, Evgeniy Kornilov, Victor Tyurina, Nina Zimnukhov, Dmitriy Podestá, Ricardo César Levato, Orlando Hugo Buckley, David Tlatov, Andrey Rebolo, Rafael Serra Ricart, Manuel |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Gamma-ray bursts Transient sources |
| topic |
Gamma-ray bursts Transient sources |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We present comprehensive multiwavelength radio to X-ray observations of GRB 181201A spanning from ≈150 s to ≈163 days after the burst, comprising the first joint ALMA-VLA-GMRT observations of a gamma-ray burst (GRB) afterglow. The radio and millimeter-band data reveal a distinct signature at ≈3.9 days, which we interpret as reverse-shock (RS) emission. Our observations present the first time that a single radio-frequency spectral energy distribution can be decomposed directly into RS and forward shock (FS) components. We perform detailed modeling of the full multiwavelength data set, using Markov Chain Monte Carlo sampling to construct the joint posterior density function of the underlying physical parameters describing the RS and FS synchrotron emission. We uncover and account for all discovered degeneracies in the model parameters. The joint RS-FS modeling reveals a weakly magnetized (σ ≈ 3 × 10-3), mildly relativistic RS, from which we derive an initial bulk Lorentz factor of Γ0 ≈ 103 for the GRB jet. Our results support the hypothesis that low-density environments are conducive to the observability of RS emission. We compare our observations to other events with strong RS detections and find a likely observational bias selecting for longer lasting, nonrelativistic RSs. We present and begin to address new challenges in modeling posed by the present generation of comprehensive, multifrequency data sets. Fil: Laskar, Tanmoy. University of Bath; Reino Unido Fil: van Eerten, Hendrik. University of Bath; Reino Unido Fil: Schady, Patricia. University of Bath; Reino Unido Fil: Mundell, Carol. University of Bath; Reino Unido Fil: Alexander, Kate D.. Northwestern University; Estados Unidos Fil: Duran, Rodolfo Barniol. California State University; Estados Unidos Fil: Berger, Edo. Harvard University; Estados Unidos Fil: Bolmer, Jan. Institut Max Planck fuer Gesellschaft. Max Planck Institute for Extraterrestrial Physics; Alemania Fil: Chornock, Ryan. Ohio University; Estados Unidos Fil: Coppejans, Deanne. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados Unidos. Northwestern University; Estados Unidos Fil: Fong, Wen fai Fong. Northwestern University; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados Unidos Fil: Gomboc, Andreja. University of Nova Gorica. Center for Astrophysics and Cosmology; Eslovenia Fil: Jordana, Nuria. University of Bath; Reino Unido Fil: Kobayashi, Shiho. Liverpool John Moores University; Fil: Margutti, Raffaella. Northwestern University; Estados Unidos. Center for Interdisciplinary Exploration and Research in Astrophysics; Estados Unidos Fil: Menten, Karl. Max-Planck-Institut für Radioastronomie; Alemania Fil: Sari, Reem. The Hebrew University of Jerusalem; Israel. The Hebrew University. Racah Institute of Physics; Israel Fil: Yamazaki, Ryo. Aoyama-Gakuin University. Department of Physics and Mathematics; Japón Fil: Lipunov, Vladimir. M. V. Lomonosov Moscow State University. Physics Department; Rusia Fil: Gorbovskoy, Evgeniy. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia Fil: Kornilov, Victor. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia Fil: Tyurina, Nina. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia Fil: Zimnukhov, Dmitriy. M. V. Lomonosov Moscow State University. Sternberg Astronomical Institute; Rusia Fil: Podestá, Ricardo César. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Departamento de Informática. Observatorio Astronómico Félix Aguilar; Argentina Fil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina Fil: Buckley, David. South African Astrophysical Observatory; Sudáfrica Fil: Tlatov, Andrey. Pulkovo Observatory. Kislovodsk Solar Station; Rusia Fil: Rebolo, Rafael. Instituto de Astrofísica de Canarias; España Fil: Serra Ricart, Manuel. Instituto de Astrofísica de Canarias; España |
| description |
We present comprehensive multiwavelength radio to X-ray observations of GRB 181201A spanning from ≈150 s to ≈163 days after the burst, comprising the first joint ALMA-VLA-GMRT observations of a gamma-ray burst (GRB) afterglow. The radio and millimeter-band data reveal a distinct signature at ≈3.9 days, which we interpret as reverse-shock (RS) emission. Our observations present the first time that a single radio-frequency spectral energy distribution can be decomposed directly into RS and forward shock (FS) components. We perform detailed modeling of the full multiwavelength data set, using Markov Chain Monte Carlo sampling to construct the joint posterior density function of the underlying physical parameters describing the RS and FS synchrotron emission. We uncover and account for all discovered degeneracies in the model parameters. The joint RS-FS modeling reveals a weakly magnetized (σ ≈ 3 × 10-3), mildly relativistic RS, from which we derive an initial bulk Lorentz factor of Γ0 ≈ 103 for the GRB jet. Our results support the hypothesis that low-density environments are conducive to the observability of RS emission. We compare our observations to other events with strong RS detections and find a likely observational bias selecting for longer lasting, nonrelativistic RSs. We present and begin to address new challenges in modeling posed by the present generation of comprehensive, multifrequency data sets. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019-10-20 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/150128 Laskar, Tanmoy; van Eerten, Hendrik; Schady, Patricia; Mundell, Carol; Alexander, Kate D.; et al.; A Reverse Shock in GRB 181201A; IOP Publishing; Astrophysical Journal; 884; 121; 20-10-2019; 112-129 0004-637X 1538-4357 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/150128 |
| identifier_str_mv |
Laskar, Tanmoy; van Eerten, Hendrik; Schady, Patricia; Mundell, Carol; Alexander, Kate D.; et al.; A Reverse Shock in GRB 181201A; IOP Publishing; Astrophysical Journal; 884; 121; 20-10-2019; 112-129 0004-637X 1538-4357 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ab40ce info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ab40ce info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1907.13128 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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IOP Publishing |
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