Wednesday, January 13, 2016

Fermi LAT Weekly report N. 396

Covered period: 2016 January 4-10
LAT Mission week:
  • Enhanced gamma-ray activity of the Crab nebula. The source has surpassed the 4.0e-6 daily flux level five times in 12 days and has reached the value of 4.7e-6 on January 7 (more details in ATel#8519). The source seems dimmed to normal flux level at the end of the week.
    A 250ks Fermi ToO has been performed.
  • Flare of PKS 1313-333 observed with daily flux 1.3e-6 on January 10. This is the first flare announced at this flux level by Fermi (more details in ATel#8533). The source is still increasing its daily flux also on January 11.
  • The gravitationally lensed LAT blazars S3 0218+35 (lens B0218+357) and PKS 1830-211 are both active on January 8. They are detected with daily fluxes respectively of 0.5e-6 and 1.3e-6. Both sources are quiescent at the end of the week.
  • 3C 454.3 with daily fluxes between 2.0e-6 and 3.4e-6.
  • PKS 1424-41 in high state during the second half of the week with daily fluxes between 1.1e-6 and 1.4e-6.
  • PKS 1502+106 with daily fluxes between 0.8e-6 and 1.0e-6.
  • PKS 2023-07 with daily fluxes between 0.7e-6 and 1.0e-6.
  • 3C 279 with daily fluxes between 0.6e-6 and 0.9e-6.
  • S5 0716+71 with daily fluxes between 0.5e-6 and 0.8e-6.
  • CTA 102 detected on January 4 at 0.9e-6.
  • Other blazars of the week detected, also sporadically, around or below about 0.5e-6:  PKS 0208-512, PKS 0336-01, PKS 0301–243, PKS 1118-05, Mkn 421, PKS 2155-304, PKS 0454–234, PKS 0405-385, PKS 0426–380, 4C +01.02 (PKS 0106+01), Mkn 501, BL Lac, 3C 273, GB6 J1037+5711, PKS 0244-470, OJ 287, AO 0235+164, NGC 1275, B2 1520+31, 4C +38.41 (B2 1633+38), B2 1846+32A, PKS 0537-441, PMN J1331-1326, PKS 1035-281, Ton 599, TXS 1343+073, PKS 1510-08, NVSS J141828+354250, OJ 287, NRAO 62 (4C +31.03), 1ES 1959+650, 3C 66A, TXS 2241+406, PKS B0027-024, PKS 1717+177, S4 1849+67 (CGRaBS J1849+6705), S4 1030+61, S4 1800+44.

Fluxes are in the unit of photons/cm^2/s above 100 MeV. All uncertainties are statistical only.
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
- Contact persons on this page for individual sources cited above.

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