ATel

An unprecedented optical outburst of the blazar CTA102

Submitted by dima on Fri, 09/21/2012 - 01:56

Мы первые заметили мощную вспышку блазара CTA 102 и известили об этом астрономическое сообщество.
Astronomer's Telegram #4397

V. Larionov, D. Blinov, (St. Petersburg Univ.), S. Jorstad (Boston Univ. and St. Petersburg Univ.)
on 19 Sep 2012; 17:49 UT

Tags: 
ATel

Increased optical activity of Be/X binary system SAX J2103.5+4545

Submitted by dima on Thu, 04/26/2012 - 16:40

Astronomer's Telegram #4068
T. Konstantinova, D. Blinov (St. Petersburg Univ.)
on 25 Apr 2012; 13:02 UT

Tags: 
ATel
Be-stars

Blazar B2 1156+29 is in a flaring state in optical.

Submitted by dima on Fri, 04/20/2012 - 22:28

Astronomer's Telegram #4051
S. Jorstad (Boston Univ., USA and St. Petersburg Univ., Russia), V. Larionov, D. Blinov, D. Morozova, E. Kopatskaya, T. Konstantinova, Yu. Pavlova, A. Mokrushina (St. Petersburg Univ.)
on 18 Apr 2012; 13:31 UT

Tags: 
ATel

Optical activity of BL Lacertae

Submitted by dima on Wed, 04/11/2012 - 23:22

По результатам последних наблюдений отправили Atel #4031 со следующим содержанием.

Tags: 
ATel

Blazar S5 0716+714 is in a flaring state in optical and gamma

Submitted by ivan on Tue, 12/13/2011 - 23:21

Astronomer's Telegram #3700
D. Blinov, D. Morozova, V. Larionov (St. Petersburg Univ., Russia)
on 22 Oct 2011; 03:12 UT

Tags: 
ATel

Optical activity of blazar OJ287

Submitted by ivan on Tue, 12/13/2011 - 23:21

We perform optical photometric and R-band polarimetric monitoring of BL Lac object OJ 287 using 70-cm AZT-8 (CrAO, Ukraine) and 0.4-m LX-200 (St.Petersburg, Russia) telescopes, as a part of GASP/WEBT project. As reported in Atel#3680, this blazar was found by Fermi LAT in active state on 2011 October 10. Our data show that a sharp optical maximum was reached on the date 2011-10-07UT03, R=14.19, while on 2011-10-10UT02 R=14.74. Meanwhile highest optical polarization p= 21% was reached even before the optical maximum, in the night of October 6.

Tags: 
ATel