Extreme intranight variability in the BL Lacertae object AO 0235+164
| dc.creator | Romero, G. E. | |
| dc.creator | Cellone, S. A. | |
| dc.creator | Combi, J. A. | |
| dc.date | 2000-07-26 | |
| dc.date.accessioned | 2026-07-07T01:54:34Z | |
| dc.date.available | 2026-07-07T01:54:34Z | |
| dc.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). | |
| dc.description | 4 pages, 3 figures, to appear in Astronomy & Astrophysics (Letters) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0007407 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0007407 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/1397 | |
| dc.subject | Astrophysics | |
| dc.title | Extreme intranight variability in the BL Lacertae object AO 0235+164 | |
| dc.type | text |