Optimized dark matter searches in deep observations of Segue 1 with MAGIC

Aleksic, J.; Ansoldi, S.; Antonelli, L. A.; Antoranz, P.; Babic, A.; Bangale, P.; Barres de Almeida, U.; Barrio, J. A.; Becerra González, J.; Bednarek, W.; Berger, K.; Bernardini, E.; Biland, A.; Blanch, O.; Bock, R. K.; Marcote Martin, Benito; Munar i Adrover, Pere; Paredes i Poy, Josep Maria; Paredes Fortuny, Xavier; Ribó Gomis, Marc

Optimized dark matter searches in deep observations of Segue 1 with MAGIC

We present the results of stereoscopic observations of the satellite galaxy Segue 1 with the MAGIC Telescopes, carried out between 2011 and 2013. With almost 160 hours of good-quality data, this is the deepest observational campaign on any dwarf galaxy performed so far in the very high energy range...

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Detalles Bibliográficos
Autores:	Aleksic, J., Ansoldi, S., Antonelli, L. A., Antoranz, P., Babic, A., Bangale, P., Barres de Almeida, U., Barrio, J. A., Becerra González, J., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Marcote Martin, Benito, Munar i Adrover, Pere, Paredes i Poy, Josep Maria, Paredes Fortuny, Xavier, Ribó Gomis, Marc
Tipo de recurso:	artículo
Estado:	Versión aceptada para publicación
Fecha de publicación:	2014
País:	España
Institución:	Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:	Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:	oai:recercat.cat:2445/49984
Acceso en línea:	https://hdl.handle.net/2445/49984
Access Level:	acceso abierto
Palabra clave:	Matèria fosca (Astronomia) Astronomia de raigs gamma Galàxies Telescopis Astrofísica Dark matter (Astronomy) Gamma ray astronomy Galaxies Telescopes Astrophysics

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repository_id_str
spelling	Optimized dark matter searches in deep observations of Segue 1 with MAGICAleksic, J.Ansoldi, S.Antonelli, L. A.Antoranz, P.Babic, A.Bangale, P.Barres de Almeida, U.Barrio, J. A.Becerra González, J.Bednarek, W.Berger, K.Bernardini, E.Biland, A.Blanch, O.Bock, R. K.Marcote Martin, BenitoMunar i Adrover, PereParedes i Poy, Josep MariaParedes Fortuny, XavierRibó Gomis, MarcMatèria fosca (Astronomia)Astronomia de raigs gammaGalàxiesTelescopisAstrofísicaDark matter (Astronomy)Gamma ray astronomyGalaxiesTelescopesAstrophysicsWe present the results of stereoscopic observations of the satellite galaxy Segue 1 with the MAGIC Telescopes, carried out between 2011 and 2013. With almost 160 hours of good-quality data, this is the deepest observational campaign on any dwarf galaxy performed so far in the very high energy range of the electromagnetic spectrum. We search this large data sample for signals of dark matter particles in the mass range between 100 GeV and 20 TeV. For this we use the full likelihood analysis method, which provides optimal sensitivity to characteristic gamma-ray spectral features, like those expected from dark matter annihilation or decay. In particular, we focus our search on gamma-rays produced from different final state Standard Model particles, annihilation with internal bremsstrahlung, monochromatic lines and box-shaped signals. Our results represent the most stringent constraints to the annihilation cross-section or decay lifetime obtained from observations of satellite galaxies, for masses above few hundred GeV. In particular, our strongest limit (95% confidence level) corresponds to a ~ 500 GeV dark matter particle annihilating into τ+τ−, and is of order langleσannvrangle simeq 1.2 × 10−24 cm3 s−1 a factor ~ 40 above the langleσannvrangle simeq thermal value.Institute of Physics (IOP)2014201420142014info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion35 p.application/pdfhttps://hdl.handle.net/2445/49984Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: http://dx.doi.org/10.1088/1475-7516/2014/02/008Journal Of Cosmology And Astroparticle Physics, 2014, vol. 2014, num. 02, p. 1-35http://dx.doi.org/10.1088/1475-7516/2014/02/008(c) IOP Publishing Ltd and Sissa Medialab srl, 2014info:eu-repo/semantics/openAccessoai:recercat.cat:2445/499842026-05-29T05:05:01Z
dc.title.none.fl_str_mv	Optimized dark matter searches in deep observations of Segue 1 with MAGIC
title	Optimized dark matter searches in deep observations of Segue 1 with MAGIC
spellingShingle	Optimized dark matter searches in deep observations of Segue 1 with MAGIC Aleksic, J. Matèria fosca (Astronomia) Astronomia de raigs gamma Galàxies Telescopis Astrofísica Dark matter (Astronomy) Gamma ray astronomy Galaxies Telescopes Astrophysics
title_short	Optimized dark matter searches in deep observations of Segue 1 with MAGIC
title_full	Optimized dark matter searches in deep observations of Segue 1 with MAGIC
title_fullStr	Optimized dark matter searches in deep observations of Segue 1 with MAGIC
title_full_unstemmed	Optimized dark matter searches in deep observations of Segue 1 with MAGIC
title_sort	Optimized dark matter searches in deep observations of Segue 1 with MAGIC
dc.creator.none.fl_str_mv	Aleksic, J. Ansoldi, S. Antonelli, L. A. Antoranz, P. Babic, A. Bangale, P. Barres de Almeida, U. Barrio, J. A. Becerra González, J. Bednarek, W. Berger, K. Bernardini, E. Biland, A. Blanch, O. Bock, R. K. Marcote Martin, Benito Munar i Adrover, Pere Paredes i Poy, Josep Maria Paredes Fortuny, Xavier Ribó Gomis, Marc
author	Aleksic, J.
author_facet	Aleksic, J. Ansoldi, S. Antonelli, L. A. Antoranz, P. Babic, A. Bangale, P. Barres de Almeida, U. Barrio, J. A. Becerra González, J. Bednarek, W. Berger, K. Bernardini, E. Biland, A. Blanch, O. Bock, R. K. Marcote Martin, Benito Munar i Adrover, Pere Paredes i Poy, Josep Maria Paredes Fortuny, Xavier Ribó Gomis, Marc
author_role	author
author2	Ansoldi, S. Antonelli, L. A. Antoranz, P. Babic, A. Bangale, P. Barres de Almeida, U. Barrio, J. A. Becerra González, J. Bednarek, W. Berger, K. Bernardini, E. Biland, A. Blanch, O. Bock, R. K. Marcote Martin, Benito Munar i Adrover, Pere Paredes i Poy, Josep Maria Paredes Fortuny, Xavier Ribó Gomis, Marc
author2_role	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	Matèria fosca (Astronomia) Astronomia de raigs gamma Galàxies Telescopis Astrofísica Dark matter (Astronomy) Gamma ray astronomy Galaxies Telescopes Astrophysics
topic	Matèria fosca (Astronomia) Astronomia de raigs gamma Galàxies Telescopis Astrofísica Dark matter (Astronomy) Gamma ray astronomy Galaxies Telescopes Astrophysics
description	We present the results of stereoscopic observations of the satellite galaxy Segue 1 with the MAGIC Telescopes, carried out between 2011 and 2013. With almost 160 hours of good-quality data, this is the deepest observational campaign on any dwarf galaxy performed so far in the very high energy range of the electromagnetic spectrum. We search this large data sample for signals of dark matter particles in the mass range between 100 GeV and 20 TeV. For this we use the full likelihood analysis method, which provides optimal sensitivity to characteristic gamma-ray spectral features, like those expected from dark matter annihilation or decay. In particular, we focus our search on gamma-rays produced from different final state Standard Model particles, annihilation with internal bremsstrahlung, monochromatic lines and box-shaped signals. Our results represent the most stringent constraints to the annihilation cross-section or decay lifetime obtained from observations of satellite galaxies, for masses above few hundred GeV. In particular, our strongest limit (95% confidence level) corresponds to a ~ 500 GeV dark matter particle annihilating into τ+τ−, and is of order langleσannvrangle simeq 1.2 × 10−24 cm3 s−1 a factor ~ 40 above the langleσannvrangle simeq thermal value.
publishDate	2014
dc.date.none.fl_str_mv	2014 2014 2014 2014
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion
format	article
status_str	acceptedVersion
dc.identifier.none.fl_str_mv	https://hdl.handle.net/2445/49984
url	https://hdl.handle.net/2445/49984
dc.language.none.fl_str_mv	Inglés
language_invalid_str_mv	Inglés
dc.relation.none.fl_str_mv	Versió postprint del document publicat a: http://dx.doi.org/10.1088/1475-7516/2014/02/008 Journal Of Cosmology And Astroparticle Physics, 2014, vol. 2014, num. 02, p. 1-35 http://dx.doi.org/10.1088/1475-7516/2014/02/008
dc.rights.none.fl_str_mv	(c) IOP Publishing Ltd and Sissa Medialab srl, 2014 info:eu-repo/semantics/openAccess
rights_invalid_str_mv	(c) IOP Publishing Ltd and Sissa Medialab srl, 2014
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	35 p. application/pdf
dc.publisher.none.fl_str_mv	Institute of Physics (IOP)
publisher.none.fl_str_mv	Institute of Physics (IOP)
dc.source.none.fl_str_mv	Articles publicats en revistes (Física Quàntica i Astrofísica) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str	Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str	Recercat. Dipósit de la Recerca de Catalunya
collection	Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score	15,811543

Optimized dark matter searches in deep observations of Segue 1 with MAGIC

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