3 Feb 2012 at 9:18am
Following the AGILE/GRID detection of a gamma-ray enhanced emission from the FSRQ PKS 1510-089 (Verrecchia et al. 2012, ATel #3907), we performed a Swift target of opportunity observation. ...
Read more...
2 Feb 2012 at 11:33am
PSN J03220535-1523156 is a peculiar type Ia supernova that exploded in NGC 1309 (Cenko, Atel #3901, Atel #3900) at a distance of 28 Mpc (from NED). A Swift ToO was executed starting from 2012-02-02T04:33:51 UT. ...
Read more...
2 Feb 2012 at 7:36am
We report the discovery of a Type Ia SN on January 15.104 (when the variable was at magnitude R = 19.5), as part of the La Silla-QUEST (LSQ) transient survey. ...
Read more...
2 Feb 2012 at 4:41am
AGILE is detecting enhanced gamma-ray emission above 100 MeV from a position consistent with the flat spectrum radio quasar PKS 1510-089 (also known as BZQ J1512-0905, coordinates: R.A. ...
Read more...
2 Feb 2012 at 1:34am
The rapid transient MASTER J113122.95-075714.5 was found on two synchronous images at 17.6 mag (white light) on Jan. 30, 2012 00:05 UT, with non-detections (fainter than 19.4) about 45 min earlier (Balanutsa et al. ...
Read more...
1 Feb 2012 at 8:55pm
We report discovery of a new nova candidate--PTF12ahb from PTF daily monitoring of M31. The candidate is located at RA(J2000)=00:41:46.70 DEC(J2000)=+40:15:06.1 with a R-band magnitude of 19.1 on Feb 01.117. ...
Read more...
1 Feb 2012 at 1:47pm
The Large Area Telescope (LAT), on board the Fermi Gamma-ray Space Telescope, has observed a gamma-ray flare from a new gamma-ray source on January 29, 2012. ...
Read more...
1 Feb 2012 at 8:22am
We report that a spectrogram of PSN J04502783-0329245 obtained on Jan. 30.90 UT with the Asiago 1.82-m Copernico Telescope (+ AFOSC; range 350-820 nm; resolution 2.4nm), suggests that it is a type-IIn supernova. ...
Read more...
1 Feb 2012 at 3:43am
The INTEGRAL monitoring of the on-going outburst of the transient accreting pulsar GX 304-1 with a Be optical companion revealed strong flaring activity with X-ray flux variations by a factor of ~2 on a time scale of ~1 hour (18-80 keV). ...
Read more...
1 Feb 2012 at 2:57am
We report that inspection of a CCD spectrum (range 340-1000 nm) obtained on Feb. 1 UT with the 3-m Shane reflector (+ Kast) at Lick Observatory shows that PSN J03220535-1523156 (ATEL#3900) is a peculiar type Ia supernova about a week before maximum light. ...
Read more...