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ATCA observations of Fermi unassociated sources | | Leonid Petrov
; Elizabeth K. Mahony
; Philip G. Edwards
; Elaine M. Sadler
; Frank K. Schinzel
; | | Date: |
11 Jan 2013 | | Abstract: | We report results of the first phase of observations with Australia Telescope
Compact Array (ATCA) at 5 and 9 GHz of the fields around 411 gamma-ray sources
with declinations less than +10 deg detected with Fermi but marked as
unassociated in the 2FGL catalogue. We have detected 416 sources with flux
densities in a range of 2 mJy to 6 Jy in the fields of 267 gamma-ray sources
within their position error ellipses drawn to cover the area of 95 per cent
probability of their localisation. Of them, 142 objects were detected in both
bands. We found 95 flat spectrum sources in our sample. The majority of them
are weak and for this reason were not found in previous surveys. Approximately
1/4 of our sample,107 objects, have the probability of being associated by more
than 10 times than the probability of being a background source found in the
vicinity of a gamma-ray object by chance. We present the catalogue of positions
of these sources, estimates of their flux densities and spectral indices when
available. | | Source: | arXiv, 1301.2386 | | Services: | Forum | Review | PDF | Favorites | |
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