[ Previous | Next | ADS ]

MASTER-SAAO follow-up to Fermi-LAT detection of FSRQ PKS B1035-281 activity. And OTs

ATel #8747; V. M.Lipunov(Lomonosov MSU), D. A.H. Buckley(SAAO), S. Shurpakov, P. Balanutsa, O. Gress, E. Gorbovskoy, N. Tiurina, A. Kuznetsov, V. Vladimirov, V. Kornilov, D. Vlasenko, I. Gorbunov, E. Popova, D. Kuvshinov (Lomonosov MSU, SAI), A. Kniazev, S. B. Potter, M. Kotze (SAAO), R. Rebolo, M. Serra Ricart, G. Israelian, N. Lodieu (IAC)
on 27 Feb 2016; 23:32 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Blazar, Cataclysmic Variable, Transient, Variables

Referred to by ATel #: 8780

MASTER-SAAO follow-up to Fermi-LAT detection of FSRQ PKS B1035-281 activity

MASTER-SAAO auto-detection system (Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) detected the brightening of the FSRQ PKS B1035-281 (RA=10 37 42.457 -28 23 04.11) during inspection of Fermi-LAT Detection of its unusual hard spectrum (Carpenter et al., ATEL #8740).
FSRQ PKS B1035-281 has unfiltered (W=0.2B+0.8R calibrated to USNO-B1) m=17.2 on 2016-02-26 21:39:12.108 (and 12images later).
MASTER-SAAO has archive images with this source:
m=19.1 on 2015-07-18 17:46:05.963UT,
m=19.0 on 2015-03-09 20:13:11.764UT,
m=19.3 on 2014-12-24 00:06:52.366UT

MASTER Optical Transients:

MASTER OT J105203.63-820403.7 discovery - possible dwarf nova with ampl>5.6m

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 10h 52m 03.63s -82d 04m 03.7s on 2016-02-27.04497 UT.
The OT unfiltered magnitude is 16.8m (the limit is 18.9m). The OT is seen in 3 images. There is no minor planet at this place.
We have reference image without OT on 2015-04-12.90927 UT with unfiltered magnitude limit 21.0m.
There is GSC2.3.2 star with known blue(only) mag=22.4. Spectral observations are required.
The discovery and reference images are available at http://master.sai.msu.ru/static/OT/105203.63-820403.7_1.png

MASTER OT J195338.03-505307.7 discovery - possible dwarf nova with ampl~5m

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 19h 53m 38.03s -50d 53m 07.7s on 2016-02-25.10459 UT with m_OT=17.6, m_OT=17.3 on 02:37:52.871UT, m_OT=17.2 on 02:43:01.021UT, m_OT=17.4 on 2016-02-26 02:35:26.6UT.
We have reference image without OT on 2015-06-30.00855 UT with unfiltered magnitude limit 19.7m.
There is GSC star in 1.4" with blue m=22.17, so the outburst ampl~5m.
Spectral observations are required.
The discovery and reference images are available at http://master.sai.msu.ru/static/OT/195338.03-505307.7_1.png

Current outbursts:
MASTER-IAC auto-detection system detected
CSS171640+112846 UG outburst with m_OT=17.5 and
QW Ser UGSU outburst with ufiltered m_OT=14.5
and
CSS UGSU (RA=08h 11m 17.07s +15d 20m 02.6s) outburst with m_OT=16.9

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net