Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes

We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions....

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Autores: Antoranz Canales, Pedro, Barrio Uña, Juan Abel, Contreras González, José Luis, Fonseca González, María Victoria, López Moya, Marcos, Miranda Pantoja, José Miguel, Nieto Castaño, Daniel, Satalecka, Konstanzja, Scapin, Valeria
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/43805
Acceso en línea:https://hdl.handle.net/20.500.14352/43805
Access Level:acceso abierto
Palabra clave:537
539.1
Gamma-ray emission
Outer magnetosphere
Slot gaps
Radiation
Acceleration
Nebula
Wind.
Electricidad
Electrónica (Física)
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
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oai_identifier_str oai:docta.ucm.es:20.500.14352/43805
network_acronym_str ES
network_name_str España
repository_id_str
spelling Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopesAntoranz Canales, PedroBarrio Uña, Juan AbelContreras González, José LuisFonseca González, María VictoriaLópez Moya, MarcosMiranda Pantoja, José MiguelNieto Castaño, DanielSatalecka, KonstanzjaScapin, Valeria537539.1Gamma-ray emissionOuter magnetosphereSlot gapsRadiationAccelerationNebulaWind.ElectricidadElectrónica (Física)Física nuclear2202.03 Electricidad2207 Física Atómica y NuclearWe use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions. We provide the widest spectra to date of the VHE components of both peaks, and these spectra extend to the energy range of satellite-borne observatories. The good resolution and background rejection of the stereoscopic MAGIC system allows us to cross-check the correctness of each spectral point of the pulsar by comparison with the corresponding (strong and well-known) Crab nebula flux. The spectra of both P1 and P2 are compatible with power laws with photon indices of 4.0 +/- 0.8 (P1) and 3.42 +/- 0.26 (P2), respectively, and the ratio P1/P2 between the photon counts of the two pulses is 0.54 +/- 0.12. The VHE emission can be understood as an additional component produced by the inverse Compton scattering of secondary and tertiary e(+/-) pairs on IR-UV photons.EDP SciencesUniversidad Complutense de Madrid20122012-04-0120122012-04-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/43805reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/438052026-06-02T12:44:21Z
dc.title.none.fl_str_mv Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
title Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
spellingShingle Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
Antoranz Canales, Pedro
537
539.1
Gamma-ray emission
Outer magnetosphere
Slot gaps
Radiation
Acceleration
Nebula
Wind.
Electricidad
Electrónica (Física)
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
title_short Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
title_full Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
title_fullStr Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
title_full_unstemmed Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
title_sort Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes
dc.creator.none.fl_str_mv Antoranz Canales, Pedro
Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
López Moya, Marcos
Miranda Pantoja, José Miguel
Nieto Castaño, Daniel
Satalecka, Konstanzja
Scapin, Valeria
author Antoranz Canales, Pedro
author_facet Antoranz Canales, Pedro
Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
López Moya, Marcos
Miranda Pantoja, José Miguel
Nieto Castaño, Daniel
Satalecka, Konstanzja
Scapin, Valeria
author_role author
author2 Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
López Moya, Marcos
Miranda Pantoja, José Miguel
Nieto Castaño, Daniel
Satalecka, Konstanzja
Scapin, Valeria
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 537
539.1
Gamma-ray emission
Outer magnetosphere
Slot gaps
Radiation
Acceleration
Nebula
Wind.
Electricidad
Electrónica (Física)
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
topic 537
539.1
Gamma-ray emission
Outer magnetosphere
Slot gaps
Radiation
Acceleration
Nebula
Wind.
Electricidad
Electrónica (Física)
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
description We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions. We provide the widest spectra to date of the VHE components of both peaks, and these spectra extend to the energy range of satellite-borne observatories. The good resolution and background rejection of the stereoscopic MAGIC system allows us to cross-check the correctness of each spectral point of the pulsar by comparison with the corresponding (strong and well-known) Crab nebula flux. The spectra of both P1 and P2 are compatible with power laws with photon indices of 4.0 +/- 0.8 (P1) and 3.42 +/- 0.26 (P2), respectively, and the ratio P1/P2 between the photon counts of the two pulses is 0.54 +/- 0.12. The VHE emission can be understood as an additional component produced by the inverse Compton scattering of secondary and tertiary e(+/-) pairs on IR-UV photons.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-04-01
2012
2012-04-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/43805
url https://hdl.handle.net/20.500.14352/43805
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869419766275375104
score 15,300724

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