On the time variability of gamma-ray sources: A numerical analysis of variability indices
- Autores
- Torres, Diego F.; Pessah, Martin E.; Romero, Gustavo Esteban
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present a Monte Carlo analysis of the recently introduced variability indices tau (Tompkins 1999) and I (Zhang et al. 2000 & Torres et al. 2001) for Gamma-ray sources. We explore different variability criteria and prove that these two indices, despite the very different approaches used to compute them, are statistically correlated (5 to 7 sigma). This conclusion is maintained also for the subset of AGNs and high latitude (|b| > 10 deg) sources, whereas the correlation is lowered for the low latitude ones, where the influence of the diffuse galactic emission background is strong.
Fil: Torres, Diego F.. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina. Princeton University; Estados Unidos
Fil: Pessah, Martin E.. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina - Materia
-
Gamma ray sources
Monte Carlo simulations - 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:11336/32132
Ver los metadatos del registro completo
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On the time variability of gamma-ray sources: A numerical analysis of variability indicesTorres, Diego F.Pessah, Martin E.Romero, Gustavo EstebanGamma ray sourcesMonte Carlo simulationshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a Monte Carlo analysis of the recently introduced variability indices tau (Tompkins 1999) and I (Zhang et al. 2000 & Torres et al. 2001) for Gamma-ray sources. We explore different variability criteria and prove that these two indices, despite the very different approaches used to compute them, are statistically correlated (5 to 7 sigma). This conclusion is maintained also for the subset of AGNs and high latitude (|b| > 10 deg) sources, whereas the correlation is lowered for the low latitude ones, where the influence of the diffuse galactic emission background is strong.Fil: Torres, Diego F.. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina. Princeton University; Estados UnidosFil: Pessah, Martin E.. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaWiley2001-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32132Romero, Gustavo Esteban; Pessah, Martin E.; Torres, Diego F.; On the time variability of gamma-ray sources: A numerical analysis of variability indices; Wiley; Astronomische Nachrichten; 322; 12-2001; 223-2270004-6337CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/1521-3994(200110)322:4<223::AID-ASNA223>3.0.CO;2-Kinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/1521-3994(200110)322:4%3C223::AID-ASNA223%3E3.0.CO;2-K/fullinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T10:32:37Zoai:ri.conicet.gov.ar:11336/32132instacron: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:34982025-11-05 10:32:37.57CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
On the time variability of gamma-ray sources: A numerical analysis of variability indices |
| title |
On the time variability of gamma-ray sources: A numerical analysis of variability indices |
| spellingShingle |
On the time variability of gamma-ray sources: A numerical analysis of variability indices Torres, Diego F. Gamma ray sources Monte Carlo simulations |
| title_short |
On the time variability of gamma-ray sources: A numerical analysis of variability indices |
| title_full |
On the time variability of gamma-ray sources: A numerical analysis of variability indices |
| title_fullStr |
On the time variability of gamma-ray sources: A numerical analysis of variability indices |
| title_full_unstemmed |
On the time variability of gamma-ray sources: A numerical analysis of variability indices |
| title_sort |
On the time variability of gamma-ray sources: A numerical analysis of variability indices |
| dc.creator.none.fl_str_mv |
Torres, Diego F. Pessah, Martin E. Romero, Gustavo Esteban |
| author |
Torres, Diego F. |
| author_facet |
Torres, Diego F. Pessah, Martin E. Romero, Gustavo Esteban |
| author_role |
author |
| author2 |
Pessah, Martin E. Romero, Gustavo Esteban |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Gamma ray sources Monte Carlo simulations |
| topic |
Gamma ray sources Monte Carlo simulations |
| 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 a Monte Carlo analysis of the recently introduced variability indices tau (Tompkins 1999) and I (Zhang et al. 2000 & Torres et al. 2001) for Gamma-ray sources. We explore different variability criteria and prove that these two indices, despite the very different approaches used to compute them, are statistically correlated (5 to 7 sigma). This conclusion is maintained also for the subset of AGNs and high latitude (|b| > 10 deg) sources, whereas the correlation is lowered for the low latitude ones, where the influence of the diffuse galactic emission background is strong. Fil: Torres, Diego F.. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina. Princeton University; Estados Unidos Fil: Pessah, Martin E.. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina |
| description |
We present a Monte Carlo analysis of the recently introduced variability indices tau (Tompkins 1999) and I (Zhang et al. 2000 & Torres et al. 2001) for Gamma-ray sources. We explore different variability criteria and prove that these two indices, despite the very different approaches used to compute them, are statistically correlated (5 to 7 sigma). This conclusion is maintained also for the subset of AGNs and high latitude (|b| > 10 deg) sources, whereas the correlation is lowered for the low latitude ones, where the influence of the diffuse galactic emission background is strong. |
| publishDate |
2001 |
| dc.date.none.fl_str_mv |
2001-12 |
| 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/11336/32132 Romero, Gustavo Esteban; Pessah, Martin E.; Torres, Diego F.; On the time variability of gamma-ray sources: A numerical analysis of variability indices; Wiley; Astronomische Nachrichten; 322; 12-2001; 223-227 0004-6337 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/32132 |
| identifier_str_mv |
Romero, Gustavo Esteban; Pessah, Martin E.; Torres, Diego F.; On the time variability of gamma-ray sources: A numerical analysis of variability indices; Wiley; Astronomische Nachrichten; 322; 12-2001; 223-227 0004-6337 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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openAccess |
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Wiley |
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