Busque entre los 167960 recursos disponibles en el repositorio
Mostrar el registro sencillo del ítem
dc.date.accessioned | 2019-10-29T12:35:02Z | |
dc.date.available | 2019-10-29T12:35:02Z | |
dc.date.issued | 2000 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/84260 | |
dc.description.abstract | We report the results of a microvariability monitoring campaign on the southern blazar PKS 0537-441. The source was observed in the V and R optical bands throughout six consecutive nights. Strong variations at both bands, with amplitudes of ∼0.3 mag, were observed on timescales of about 2 days. Smaller fluctuations of ∼0.05 mag on a scale of a couple of hours are superposed on the larger outburst. The spectral index was also variable during the observing period, with an average value of α = -1.6 and changes up to ∼27.5%. The spectrum varies in the sense that it becomes harder when the source is brighter, in accordance with predictions of shock-in-jet models. We discuss our results and the possible origin of the variability in this blazar in light of recent higher frequency observations. | en |
dc.format.extent | 1192-1197 | es |
dc.language | en | es |
dc.subject | BL lacertae objects: individual (PKS 0537-441) | es |
dc.subject | Galaxies: active | es |
dc.subject | Galaxies: photometry | es |
dc.title | Two-color photometry with high temporal resolution of the extremely variable blazar PKS 0537-441 | en |
dc.type | Articulo | es |
sedici.identifier.other | doi:10.1086/301526 | es |
sedici.identifier.other | eid:2-s2.0-0000740190 | es |
sedici.identifier.issn | 0004-6256 | es |
sedici.creator.person | Romero, Gustavo Esteban | es |
sedici.creator.person | Cellone, Sergio Aldo | es |
sedici.creator.person | Combi, Jorge Ariel | es |
sedici.subject.materias | Ciencias Astronómicas | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Astronómicas y Geofísicas | es |
mods.originInfo.place | Instituto Argentino de Radioastronomía | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | The Astronomical Journal | es |
sedici.relation.journalVolumeAndIssue | vol. 120, no. 3 | es |
sedici.rights.sherpa | * RoMEO: verde* Pre-print del autor: can* Post-print del autor: can* Versión de editor/PDF:can* Condiciones:>>On any website, arXiv, scientific social networks (except Research Gate) or non-commercial open access repository.>>Publisher's version/PDF may be used on any website or authors' institutional repository>>Deben reconocerse el copyright y la fuente editorial>>Debe ir enlazado a la versión de editor>>La versión de editor/PDF puede utilizarse>>Authors depositing in arXiv must they choose the first licence statement offered by arXiv when uploading their article � a "non-exclusive licence to distribute">>Publisher last contacted on 10/02/2016>>Publisher last reviewed on 15/08/2017* Link a Sherpa: http://sherpa.ac.uk/romeo/issn/0004-6256/es/ |