Monday, May 18, 2009

Fermi LAT weekly report no. 50

Covered period: 2009.May.11 - 2009.May.17

  • Fermi LAT detection of recent activity in a source positionally consistent with the blazar PKS 0805-07 (see ATel #2048).

  • Fermi LAT detection of a GeV flare in a source positionally consistent with blazar NRAO 190 (PKS 0440-00). (see ATel #2049).

  • 3C 66A is active (with a flux (>100 MeV) around or above above 1e-6 ph/cm^2/s) during the whole week.

  • PKS 1510-089 is the brightest blazar (flux (>100 MeV) exceeded 2e-6 ph/cm^2/s on several days of this week).

  • PKS 1502+106 is fluctuating around a flux (>100 MeV) of 1e-6 ph/cm^2/s.

  • 3C 454.3 is quieter, but reached the level of 1.5e-6 ph/cm^2/s at the end of the week.

  • PKS 2155-304 is detected sometimes with daily flux (>100 MeV) around 0.3e-6 ph/cm^2/s.

  • LSI +61 303 bright and detected in most days of this week.

Note. All the flux reported above are by 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:
S. Ciprini (stefano.ciprini[at] for generic information related to this week;
- for PKS 1510-089 the LAT contact person is A. Tramacere (tramacer[at];
- for PKS 1502+106 the LAT contact person is S. Ciprini (stefano.ciprini[at];
- for 3C 66A the LAT contact person is L. C. Reyes (lreyes[at];
- for 3C 454.3 the LAT contact persons are B. Lott (lott[at] and G. Madejski (madejski[at];)
- for PKS 2155-304 the LAT contact persons are B. Giebels (berrie[at] and J. Chiang (jchiang[at];
- for LSI +61 303 the LAT contact person is R. Dubois (richard[at]

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