Record gamma-ray flux level detected from PKS 1510-089 by Fermi/LAT

Details Record gamma-ray flux level detected from PKS 1510-089 by Fermi/LAT Record gamma-ray flux level detected from PKS 1510-089 by Fermi/LAT

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3694....1h&link_type=abstract

The Astronomer's Telegram, #3694

Astronomy and Astrophysics

Astronomy

Gamma Ray, >Gev, Request For Observations, Agn, Blazar, Quasar

Scientific paper

The Large Area Telescope (LAT), one of two instruments on the Fermi Gamma-ray Space Telescope, has observed a sharp increase in the gamma-ray flux of the flat spectrum radio quasar PKS 1510-089 (R.A. = 15h12m50.5329s, Dec. =-09d05m59.828s, J2000, Johnston et al. 1995, AJ, 110, 880) at redshift z = 0.360 (Thompson et al. 1990, PASP, 102, 1235).
Preliminary analysis shows that the enhanced gamma-ray activity began on 17 October 2011 with a gamma-ray flux of 6e-6 ph cm^-2s^-1 (E>100MeV), reaching a maximum of (15.9+/-1.0) e-6 ph cm^-2 s^-1 in the daily run and (30.1 ± 2.3)e-6 ph cm^-2 s^-1 in the six hour run that began at 18:00 hrs UT on 19 October 2011.

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