Friday, September 2, 2011

Fermi LAT weekly report N. 167

Covered period: 2011.Aug.15 - 2011.Aug.21

LAT Mission week: 167.57 - 168.57

  • New gamma ray detection in the vicinity of TXS 1530-131 (PMNJ1532-1319). The source brightened in gamma rays on August 22, 2011, with a daily flux of 1.2 +/- 0.4 X 10-6. (ATel#3573).

  • Gamma ray Flare of MG1 J050533+0415 (CRATES J0505+0415) detected on Aug 19 with a daily flux of 1.2 +/- 0.2 X 10-6. During the six-hour interval from 00:00:00 to 06:00:00 UTC on the same day, the source
    reached a flux of 3.7 +/- 0.9 X 10-6. (See ATel#3579).

  • PKS 1510-089 continues its high gamma ray activity started months ago, being detected for most of the week reaching the flux of 2.6 +/- 0.4 X 10-6 on Aug 17.

  • PKS 1244–255detected between 16 and 21 Aug with a daily flux around 1 X 10-6.

  • NGC1275 detected on Aug 21 with a daily flux of 0.3 +/- 0.1 X 10-6.

  • Sporadic daily detections of blazars (daily flux under 1 X 10-6): PKS 0537–441, B2 0218+35,PKS 1424–41,PKS 0454–234, B3 0650+453 , S4 0646+60 (OH 577.1), RX J0948.8+0022, B3 1343+451, CTA 102, BL LAC, CRATES J0719-3928, B2 1520+31, S5 0716+714,PKS 2142-75, PKS 2326-502, PMN J2345-1555, 3C 279, SDSS J123932.75+044305, 3C 66A.

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:

-D. Gasparrini( for generic information related to this week.

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

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