Swift imaging shows no evidence for active AGN near Crab

Details Swift imaging shows no evidence for active AGN near Crab Swift imaging shows no evidence for active AGN near Crab

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2868....1h&link_type=abstract

The Astronomer's Telegram, #2868

Astronomy and Astrophysics

Astronomy

4

X-Ray, Gamma Ray, Pulsars, Supernova Remnants, Transients

Scientific paper

The detection of enhanced gamma-ray (>100 MeV) flux from the direction of the Crab Nebula by AGILE (ATEL #2855) and Fermi (ATEL #2861) raises the question of whether the gamma-rays are from the Crab itself, or from a previously unknown gamma-ray source, such as an AGN, in close proximity to the Crab (the Fermi 1-sigma error radius is 3.6'). Although no changes have been noted in the overall X-ray flux from the Crab's direction (ATEL #2856, ATEL #2858), it is possible that a fainter X-ray source could have appeared, motivating imaging observations.

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