Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State
- Autores
- Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Beilicke, M.; Benbow, W.; Bird, R.; Bottcher, M.; Bouvier, A.; Bugaev, V.; Byrum, K.; Cesarini, A.; Ciupik, L.; Collins-Hughes, E.; Connolly, M. P.; Cui, W.; Dickherber, R.; Duke, C.; Dumm, J.; Errando, M.; Falcone, A.; Federici, S.; Feng, Q.; Finley, J. P.; Finnegan, G.; Fortson, L.; Furniss, A.; Galante, N.; Gall, D.; Pichel, Ana Carolina
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007–2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (σ) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distribution (SED) is constructed from contemporaneous data from VERITAS, Fermi-LAT, RXTE PCA, and Swift UVOT. Swift XRT data is not included in the SED due to a lack of simultaneous observations with VERITAS. In contrast to the orphan γ -ray flare exhibited by this source in 2002, the X-ray flux of the source is found to vary by an order of magnitude, while other energy regimes exhibit less variable emission. A quasi-equilibrium synchrotron self-Compton model with an additional external radiation field is used to describe three SEDs corresponding to the lowest, highest, and average X-ray states. The variation in the X-ray spectrum is modeled by changing the electron injection spectral index, with minor adjustments of the kinetic luminosity in electrons. This scenario produces small-scale flux variability of the order of 2 in the high energy (E > 1 MeV) and very high energy (E > 100 GeV) γ -ray regimes, which is corroborated by the Fermi-LAT, VERITAS, and Whipple 10 m telescope light curves.
Fil: Aliu, E.. Columbia University, Barnard College, Department of Physics and Astronomy; Estados Unidos
Fil: Archambault, S.. McGill University; Canadá
Fil: Arlen, T.. University of California; Estados Unidos
Fil: Aune, T.. University of California; Estados Unidos
Fil: Beilicke, M.. Washington University in St. Louis; Estados Unidos
Fil: Benbow, W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Bird, R.. University College Dublin; Irlanda
Fil: Bottcher, M.. Ohio University; Estados Unidos
Fil: Bouvier, A.. University of California; Estados Unidos
Fil: Bugaev, V.. Washington University in St. Louis; Estados Unidos
Fil: Byrum, K.. Argonne National Laboratory; Estados Unidos
Fil: Cesarini, A.. National University of Ireland Galway; Irlanda
Fil: Ciupik, L.. Adler Planetarium and Astronomy Museum; Estados Unidos
Fil: Collins-Hughes, E.. University College Dublin; Irlanda
Fil: Connolly, M. P.. National University of Ireland Galway; Irlanda
Fil: Cui, W.. Purdue University; Estados Unidos
Fil: Dickherber, R.. Washington University in St. Louis; Estados Unidos
Fil: Duke, C.. Grinnell College; Estados Unidos
Fil: Dumm, J.. University Of Minnesota; Estados Unidos
Fil: Errando, M.. Columbia University; Estados Unidos
Fil: Falcone, A.. Pennsylvania State University; Estados Unidos
Fil: Federici, S.. Pennsylvania State University; Estados Unidos. Desy; Alemania
Fil: Feng, Q.. Purdue University; Estados Unidos
Fil: Finley, J. P.. Purdue University; Estados Unidos
Fil: Finnegan, G.. University of Utah; Estados Unidos
Fil: Fortson, L.. University Of Minnesota; Estados Unidos
Fil: Furniss, A.. University of California; Estados Unidos
Fil: Galante, N.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Gall, D.. University of Iowa; Estados Unidos
Fil: Pichel, Ana Carolina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina - Materia
-
Bl Lacertae Objects: General
Bl Lacertae Objects: Individual (1es 1959+650 = Ver J1959+651)
Galaxies: Active
Gamma Rays: Galaxies - 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:11336/17372
Ver los metadatos del registro completo
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Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux StateAliu, E.Archambault, S.Arlen, T.Aune, T.Beilicke, M.Benbow, W.Bird, R.Bottcher, M.Bouvier, A.Bugaev, V.Byrum, K.Cesarini, A.Ciupik, L.Collins-Hughes, E.Connolly, M. P.Cui, W.Dickherber, R.Duke, C.Dumm, J.Errando, M.Falcone, A.Federici, S.Feng, Q.Finley, J. P.Finnegan, G.Fortson, L.Furniss, A.Galante, N.Gall, D.Pichel, Ana CarolinaBl Lacertae Objects: GeneralBl Lacertae Objects: Individual (1es 1959+650 = Ver J1959+651)Galaxies: ActiveGamma Rays: Galaxieshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007–2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (σ) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distribution (SED) is constructed from contemporaneous data from VERITAS, Fermi-LAT, RXTE PCA, and Swift UVOT. Swift XRT data is not included in the SED due to a lack of simultaneous observations with VERITAS. In contrast to the orphan γ -ray flare exhibited by this source in 2002, the X-ray flux of the source is found to vary by an order of magnitude, while other energy regimes exhibit less variable emission. A quasi-equilibrium synchrotron self-Compton model with an additional external radiation field is used to describe three SEDs corresponding to the lowest, highest, and average X-ray states. The variation in the X-ray spectrum is modeled by changing the electron injection spectral index, with minor adjustments of the kinetic luminosity in electrons. This scenario produces small-scale flux variability of the order of 2 in the high energy (E > 1 MeV) and very high energy (E > 100 GeV) γ -ray regimes, which is corroborated by the Fermi-LAT, VERITAS, and Whipple 10 m telescope light curves.Fil: Aliu, E.. Columbia University, Barnard College, Department of Physics and Astronomy; Estados UnidosFil: Archambault, S.. McGill University; CanadáFil: Arlen, T.. University of California; Estados UnidosFil: Aune, T.. University of California; Estados UnidosFil: Beilicke, M.. Washington University in St. Louis; Estados UnidosFil: Benbow, W.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Bird, R.. University College Dublin; IrlandaFil: Bottcher, M.. Ohio University; Estados UnidosFil: Bouvier, A.. University of California; Estados UnidosFil: Bugaev, V.. Washington University in St. Louis; Estados UnidosFil: Byrum, K.. Argonne National Laboratory; Estados UnidosFil: Cesarini, A.. National University of Ireland Galway; IrlandaFil: Ciupik, L.. Adler Planetarium and Astronomy Museum; Estados UnidosFil: Collins-Hughes, E.. University College Dublin; IrlandaFil: Connolly, M. P.. National University of Ireland Galway; IrlandaFil: Cui, W.. Purdue University; Estados UnidosFil: Dickherber, R.. Washington University in St. Louis; Estados UnidosFil: Duke, C.. Grinnell College; Estados UnidosFil: Dumm, J.. University Of Minnesota; Estados UnidosFil: Errando, M.. Columbia University; Estados UnidosFil: Falcone, A.. Pennsylvania State University; Estados UnidosFil: Federici, S.. Pennsylvania State University; Estados Unidos. Desy; AlemaniaFil: Feng, Q.. Purdue University; Estados UnidosFil: Finley, J. P.. Purdue University; Estados UnidosFil: Finnegan, G.. University of Utah; Estados UnidosFil: Fortson, L.. University Of Minnesota; Estados UnidosFil: Furniss, A.. University of California; Estados UnidosFil: Galante, N.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Gall, D.. University of Iowa; Estados UnidosFil: Pichel, Ana Carolina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaIop Publishing Ltd2013-09-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17372Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Beilicke, M.; et al.; Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State; Iop Publishing Ltd; Astrophysical Journal; 775; 3; 20-9-2013; 1-80004-637Xenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/775/1/3info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/775/1/3/metainfo:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1307.6772info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:52Zoai:ri.conicet.gov.ar:11336/17372instacron: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:34982025-09-29 09:36:53.041CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State |
| title |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State |
| spellingShingle |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State Aliu, E. Bl Lacertae Objects: General Bl Lacertae Objects: Individual (1es 1959+650 = Ver J1959+651) Galaxies: Active Gamma Rays: Galaxies |
| title_short |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State |
| title_full |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State |
| title_fullStr |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State |
| title_full_unstemmed |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State |
| title_sort |
Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State |
| dc.creator.none.fl_str_mv |
Aliu, E. Archambault, S. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Bird, R. Bottcher, M. Bouvier, A. Bugaev, V. Byrum, K. Cesarini, A. Ciupik, L. Collins-Hughes, E. Connolly, M. P. Cui, W. Dickherber, R. Duke, C. Dumm, J. Errando, M. Falcone, A. Federici, S. Feng, Q. Finley, J. P. Finnegan, G. Fortson, L. Furniss, A. Galante, N. Gall, D. Pichel, Ana Carolina |
| author |
Aliu, E. |
| author_facet |
Aliu, E. Archambault, S. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Bird, R. Bottcher, M. Bouvier, A. Bugaev, V. Byrum, K. Cesarini, A. Ciupik, L. Collins-Hughes, E. Connolly, M. P. Cui, W. Dickherber, R. Duke, C. Dumm, J. Errando, M. Falcone, A. Federici, S. Feng, Q. Finley, J. P. Finnegan, G. Fortson, L. Furniss, A. Galante, N. Gall, D. Pichel, Ana Carolina |
| author_role |
author |
| author2 |
Archambault, S. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Bird, R. Bottcher, M. Bouvier, A. Bugaev, V. Byrum, K. Cesarini, A. Ciupik, L. Collins-Hughes, E. Connolly, M. P. Cui, W. Dickherber, R. Duke, C. Dumm, J. Errando, M. Falcone, A. Federici, S. Feng, Q. Finley, J. P. Finnegan, G. Fortson, L. Furniss, A. Galante, N. Gall, D. Pichel, Ana Carolina |
| 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 author |
| dc.subject.none.fl_str_mv |
Bl Lacertae Objects: General Bl Lacertae Objects: Individual (1es 1959+650 = Ver J1959+651) Galaxies: Active Gamma Rays: Galaxies |
| topic |
Bl Lacertae Objects: General Bl Lacertae Objects: Individual (1es 1959+650 = Ver J1959+651) Galaxies: Active Gamma Rays: Galaxies |
| 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 report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007–2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (σ) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distribution (SED) is constructed from contemporaneous data from VERITAS, Fermi-LAT, RXTE PCA, and Swift UVOT. Swift XRT data is not included in the SED due to a lack of simultaneous observations with VERITAS. In contrast to the orphan γ -ray flare exhibited by this source in 2002, the X-ray flux of the source is found to vary by an order of magnitude, while other energy regimes exhibit less variable emission. A quasi-equilibrium synchrotron self-Compton model with an additional external radiation field is used to describe three SEDs corresponding to the lowest, highest, and average X-ray states. The variation in the X-ray spectrum is modeled by changing the electron injection spectral index, with minor adjustments of the kinetic luminosity in electrons. This scenario produces small-scale flux variability of the order of 2 in the high energy (E > 1 MeV) and very high energy (E > 100 GeV) γ -ray regimes, which is corroborated by the Fermi-LAT, VERITAS, and Whipple 10 m telescope light curves. Fil: Aliu, E.. Columbia University, Barnard College, Department of Physics and Astronomy; Estados Unidos Fil: Archambault, S.. McGill University; Canadá Fil: Arlen, T.. University of California; Estados Unidos Fil: Aune, T.. University of California; Estados Unidos Fil: Beilicke, M.. Washington University in St. Louis; Estados Unidos Fil: Benbow, W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Bird, R.. University College Dublin; Irlanda Fil: Bottcher, M.. Ohio University; Estados Unidos Fil: Bouvier, A.. University of California; Estados Unidos Fil: Bugaev, V.. Washington University in St. Louis; Estados Unidos Fil: Byrum, K.. Argonne National Laboratory; Estados Unidos Fil: Cesarini, A.. National University of Ireland Galway; Irlanda Fil: Ciupik, L.. Adler Planetarium and Astronomy Museum; Estados Unidos Fil: Collins-Hughes, E.. University College Dublin; Irlanda Fil: Connolly, M. P.. National University of Ireland Galway; Irlanda Fil: Cui, W.. Purdue University; Estados Unidos Fil: Dickherber, R.. Washington University in St. Louis; Estados Unidos Fil: Duke, C.. Grinnell College; Estados Unidos Fil: Dumm, J.. University Of Minnesota; Estados Unidos Fil: Errando, M.. Columbia University; Estados Unidos Fil: Falcone, A.. Pennsylvania State University; Estados Unidos Fil: Federici, S.. Pennsylvania State University; Estados Unidos. Desy; Alemania Fil: Feng, Q.. Purdue University; Estados Unidos Fil: Finley, J. P.. Purdue University; Estados Unidos Fil: Finnegan, G.. University of Utah; Estados Unidos Fil: Fortson, L.. University Of Minnesota; Estados Unidos Fil: Furniss, A.. University of California; Estados Unidos Fil: Galante, N.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Gall, D.. University of Iowa; Estados Unidos Fil: Pichel, Ana Carolina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina |
| description |
We report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007–2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (σ) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distribution (SED) is constructed from contemporaneous data from VERITAS, Fermi-LAT, RXTE PCA, and Swift UVOT. Swift XRT data is not included in the SED due to a lack of simultaneous observations with VERITAS. In contrast to the orphan γ -ray flare exhibited by this source in 2002, the X-ray flux of the source is found to vary by an order of magnitude, while other energy regimes exhibit less variable emission. A quasi-equilibrium synchrotron self-Compton model with an additional external radiation field is used to describe three SEDs corresponding to the lowest, highest, and average X-ray states. The variation in the X-ray spectrum is modeled by changing the electron injection spectral index, with minor adjustments of the kinetic luminosity in electrons. This scenario produces small-scale flux variability of the order of 2 in the high energy (E > 1 MeV) and very high energy (E > 100 GeV) γ -ray regimes, which is corroborated by the Fermi-LAT, VERITAS, and Whipple 10 m telescope light curves. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013-09-20 |
| 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 |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/17372 Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Beilicke, M.; et al.; Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State; Iop Publishing Ltd; Astrophysical Journal; 775; 3; 20-9-2013; 1-8 0004-637X |
| url |
http://hdl.handle.net/11336/17372 |
| identifier_str_mv |
Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Beilicke, M.; et al.; Multiwavelength Observations and Modeling of 1ES 1959+650 in a Low Flux State; Iop Publishing Ltd; Astrophysical Journal; 775; 3; 20-9-2013; 1-8 0004-637X |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/775/1/3 info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/775/1/3/meta info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1307.6772 |
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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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Iop Publishing Ltd |
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Iop Publishing Ltd |
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