Identification of γ-ray emission from 3C 345 and NRAO 512

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Volume 532 (August 2011)

A&A, 532 (2011) A150

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Table 2

Swift-XRT observations after the reported flare in October 2009 of the three candidate sources (3C 345, NRAO 512 and B3 1640 + 396).

Source	Obs. date (*)	Exp.	Flux	Index

3C 345:	2009-10-04 (5109)	4.2	6.8 ± 0.5	1.68 ± 0.11
	2009-10-06^a (5111)	1.9	4.7 ± 0.7	1.66 ± 0.17
	2009-10-08 (5113)	2.1	7.1 ± 0.8	1.75 ± 0.16
	2009-10-09 (5114)	2.2	6.4 ± 0.7	1.62 ± 0.15
	2009-10-18 (5123)	3.9	6.2 ± 0.5	1.67 ± 0.12
	2009-11-01 (5137)	4.1	5.5 ± 0.5	1.77 ± 0.11
	2009-11-15 (5151)	4.0	5.9 ± 0.5	1.88 ± 0.11
	2009-11-29 (5165)	4.1	5.7 ± 0.5	1.71 ± 0.12
	2010-03-06/07 (5262/3)	2.6	5.6 ± 0.6	1.84 ± 0.15
	2010-03-09^a (5265)	1.4	5.6 ± 0.8	1.78 ± 0.18
	2010-04-09^a (5296)	2.0	5.5 ± 0.7	1.88 ± 0.16
	2010-08-18 (5427)	4.3	5.4 ± 0.5	1.54 ± 0.11
NRAO 512:	2009-10-08^a (5113)	2.1	0.6	1.5 ± 0.5
	2009-10-15^a (5120)	2.1	0.5 ± 0.2	2.2 ± 0.6
	2010-08-06/07^a (5415/6)	5.5	0.7 ± 0.1	2.0 ± 0.3
B3 1640+396:	2009-12-01^a (5167)	1.1	0.7	1.8 ± 0.7

Notes. Obs. date (*) – date of Swift-XRT observation (*=JD-2 450 000). Exp. – Swift-XRT effective exposure time in ks. Flux – integrated unabsorbed photon flux 0.3 − 10 keV in units of 10^-12 erg cm^-2 s^-1.

^(a)

Cash statistic used for observations with less than 200 photons.

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