Thursday, February 10, 2011

Fermi LAT weekly report N. 139

Covered period: 2011.Jan.31 - 2011.Feb.06

LAT Mission week: 139.57 - 140.57

  • 3C 454.3 was detected all week long (daily flux between 2.8 and 4.1 X 10-6).

  • B2 1520+31 continues to be active (daily flux between 0.3 and 1.7 X 10-6).

  • PKS 2326-502 was detected sporadically throughout the week with a peak flux occurring on Feb. 6 (1.3 X 10-6).

  • PKS 1622-253 was seen on Feb. 3 and on Feb. 6 (daily flux of 1.9 and 1.6 X 10-6 respectively).

  • The region of Cygnus X-3 was intermittently active during the week with a peak flux seen on Feb. 4. This follows reports of increased gamma-ray activity from this object seen by AGILE (see A. Tels. 3151 and 3141)

  • 4C +21.35 was detected at a daily flux of 1.2 + 0.3 X 10-6 on Feb. 1

  • Sporadic activity observed from PKS 0402-502 (Jan. 31), PKS 0537-441 (Feb. 2 - 5), 4C +38.41 (Feb. 3), CRATES J0742+5444 (Feb. 5) and B2 2308+34 (Feb. 4 and 5). All fluxes below 1.0 X 10-6.

Fluxes are in the unit of photons/cm2/s above 100 MeV. All errors are statistical only.

Note. All the fluxes reported above are from the ASP analysis and should be considered preliminary and should not be used for publication, however they are indicative of the flux range and the current status of a source. Source association is done on the basis of source location, considering spatial coincidence only, and it is not indicative of an identification.
- Please acknowledge the LAT team if you use information from this report.

For questions and comments please contact:

- J. S. Perkins (jeremy.s.perkins[at] for generic information related to this week

- Contact persons on this page for individual sources cited above.

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