Extreme intranight variability in the BL Lacertae object AO 0235+164
- Autores
- Combi, Jorge Ariel; Cellone, Sergio Aldo; Romero, Gustavo Esteban
- Año de publicación
- 2000
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present results of two-colour photometry with high time resolution of the violently variable BL Lac object AO 0235+164. We have found extreme intranight variability with amplitudes of ~ 100% over time scales of 24 hours. Changes of 0.5 magnitudes in both R and V bands were measured within a single night, and variations up to 1.2 magnitudes occurred from night to night. A complete outburst with an amplitude ~ 30% was observed during one of the nights, while the spectrum remained unchanged. This seems to support an origin based on a thin relativistic shock propagating in such a way that it changes the viewing angle, as recently suggested by Kraus et al. (1999) and Qian et al. (2000).
Fil: Combi, Jorge Ariel. 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
Fil: Cellone, Sergio Aldo. 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
-
BL Lacertae objects
AO 0235+164 (galaxia)
Photometry
Radiation mechanisms
Nonthermal mechanisms - 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:11336/32312
Ver los metadatos del registro completo
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Extreme intranight variability in the BL Lacertae object AO 0235+164Combi, Jorge ArielCellone, Sergio AldoRomero, Gustavo EstebanBL Lacertae objectsAO 0235+164 (galaxia)PhotometryRadiation mechanismsNonthermal mechanismshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present results of two-colour photometry with high time resolution of the violently variable BL Lac object AO 0235+164. We have found extreme intranight variability with amplitudes of ~ 100% over time scales of 24 hours. Changes of 0.5 magnitudes in both R and V bands were measured within a single night, and variations up to 1.2 magnitudes occurred from night to night. A complete outburst with an amplitude ~ 30% was observed during one of the nights, while the spectrum remained unchanged. This seems to support an origin based on a thin relativistic shock propagating in such a way that it changes the viewing angle, as recently suggested by Kraus et al. (1999) and Qian et al. (2000).Fil: Combi, Jorge Ariel. 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; ArgentinaFil: Cellone, Sergio Aldo. 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; ArgentinaEDP Sciences2000-12info: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/11336/32312Romero, Gustavo Esteban; Cellone, Sergio Aldo; Combi, Jorge Ariel; Extreme intranight variability in the BL Lacertae object AO 0235+164; EDP Sciences; Astronomy and Astrophysics; 360; 12-2000; 47-500004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2000A%26A...360L..47Rinfo:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/astro-ph/0007407info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:36:57Zoai:ri.conicet.gov.ar:11336/32312instacron: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:34982025-10-22 11:36:57.984CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Extreme intranight variability in the BL Lacertae object AO 0235+164 |
| title |
Extreme intranight variability in the BL Lacertae object AO 0235+164 |
| spellingShingle |
Extreme intranight variability in the BL Lacertae object AO 0235+164 Combi, Jorge Ariel BL Lacertae objects AO 0235+164 (galaxia) Photometry Radiation mechanisms Nonthermal mechanisms |
| title_short |
Extreme intranight variability in the BL Lacertae object AO 0235+164 |
| title_full |
Extreme intranight variability in the BL Lacertae object AO 0235+164 |
| title_fullStr |
Extreme intranight variability in the BL Lacertae object AO 0235+164 |
| title_full_unstemmed |
Extreme intranight variability in the BL Lacertae object AO 0235+164 |
| title_sort |
Extreme intranight variability in the BL Lacertae object AO 0235+164 |
| dc.creator.none.fl_str_mv |
Combi, Jorge Ariel Cellone, Sergio Aldo Romero, Gustavo Esteban |
| author |
Combi, Jorge Ariel |
| author_facet |
Combi, Jorge Ariel Cellone, Sergio Aldo Romero, Gustavo Esteban |
| author_role |
author |
| author2 |
Cellone, Sergio Aldo Romero, Gustavo Esteban |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
BL Lacertae objects AO 0235+164 (galaxia) Photometry Radiation mechanisms Nonthermal mechanisms |
| topic |
BL Lacertae objects AO 0235+164 (galaxia) Photometry Radiation mechanisms Nonthermal mechanisms |
| 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 results of two-colour photometry with high time resolution of the violently variable BL Lac object AO 0235+164. We have found extreme intranight variability with amplitudes of ~ 100% over time scales of 24 hours. Changes of 0.5 magnitudes in both R and V bands were measured within a single night, and variations up to 1.2 magnitudes occurred from night to night. A complete outburst with an amplitude ~ 30% was observed during one of the nights, while the spectrum remained unchanged. This seems to support an origin based on a thin relativistic shock propagating in such a way that it changes the viewing angle, as recently suggested by Kraus et al. (1999) and Qian et al. (2000). Fil: Combi, Jorge Ariel. 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 Fil: Cellone, Sergio Aldo. 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 results of two-colour photometry with high time resolution of the violently variable BL Lac object AO 0235+164. We have found extreme intranight variability with amplitudes of ~ 100% over time scales of 24 hours. Changes of 0.5 magnitudes in both R and V bands were measured within a single night, and variations up to 1.2 magnitudes occurred from night to night. A complete outburst with an amplitude ~ 30% was observed during one of the nights, while the spectrum remained unchanged. This seems to support an origin based on a thin relativistic shock propagating in such a way that it changes the viewing angle, as recently suggested by Kraus et al. (1999) and Qian et al. (2000). |
| publishDate |
2000 |
| dc.date.none.fl_str_mv |
2000-12 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/32312 Romero, Gustavo Esteban; Cellone, Sergio Aldo; Combi, Jorge Ariel; Extreme intranight variability in the BL Lacertae object AO 0235+164; EDP Sciences; Astronomy and Astrophysics; 360; 12-2000; 47-50 0004-6361 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/32312 |
| identifier_str_mv |
Romero, Gustavo Esteban; Cellone, Sergio Aldo; Combi, Jorge Ariel; Extreme intranight variability in the BL Lacertae object AO 0235+164; EDP Sciences; Astronomy and Astrophysics; 360; 12-2000; 47-50 0004-6361 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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openAccess |
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EDP Sciences |
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EDP Sciences |
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