Friday, October 28, 2011

Fermi LAT weekly report N.176



Covered period: 2011.Oct.17 - 2011.Oct.23

LAT Mission week: 176.57 - 177.57





  • PKS 1510-08 was in a state of high activity all week, reaching a daily peak flux of (15.9±1.0) x 10-6 on October 19 2011, ATel#3694.


  • PKS 0454-234 detected every day except on October 17 with daily flux reaching a peak of (1.7±0.2) x 10-6 on October 22 2011, ATel#3703.


  • PKS 1124-186 detected on October 10, 11, 12 and 14 with daily flux between (0.3±-0.1) x 10-6 and (0.6±0.1) x 10-6.


  • 4C +28.07 detected every day with daily flux between (0.6±0.3) x 10-6 and (1.2±0.3) x 10-6.


  • PKS 2345-1555 detected on Oct. 17, 18 and 23 with daily flux of (0.4±0.2) x 10-6 and (0.7±0.3) x 10-6.


  • PKS 2326-502 detected on Oct. 17 and 22 with daily flux of (0.7±0.2) x 10-6 and (0.5±0.2) x 10-6.


  • S5 0716+714 (also known as CGRaBS J0721+7120) detected every day reaching a peak flux of (1.5±0.2) x 10-6 and an ATel was issued by Blinov et al, ATel#3700.


  • PKS 0537-441, PKS 1055+01, 1633+382, TXS 1530-131, B2 1510+31, CRATES, J1016+0513, 3C 371 and 2155-304 were detected this week.


  • There was no report for October 21 because the data were unavailable.



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:

- F. Hungwe (faith.hungwe[at]gmail.com) for generic information related
to this week

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




Wednesday, October 19, 2011

Fermi LAT weekly report N. 175



Covered period: 2011.October.10 - 2011.October.16

LAT Mission week: 175.57 - 176.57





  • PKS 1510-08 detected in flaring activity with a high significance
    detection almost every day, with daily flux between
    (1.8+/-0.4)x10-6 and (3.9+/-0.6)x10-6.

  • OJ 287 detected three times this week in a high state, with a peak daily
    flux of (1.0+/-0.2)x10-6 on October 10 (ATel#3680).

  • PKS 0454-234 detected every day with daily flux between (0.4+/-0.1)x10-6 and (1.1+/-0.2)x10-6.

  • PKS 1124-186 detected on October 10, 11, 12 and 14 with daily flux between (0.3+/-0.1)x10-6 and (0.6+/-0.1)x10-6.

  • 4C +28.07 detected on October 11, 13, 14, 15 and 16 with daily flux between (0.9+/-0.2)x10-6 and (1.4+/-0.3)x10-6.

  • PKS 2345-16 detected on Oct. 10 and 12 with daily flux of (0.6+/-0.2)x10-6 and (0.8+/-0.3)x10-6.

  • S5 0716+71 detected on Oct. 11 and 12 with daily flux of (0.5+/-0.1)x10-6.

  • CGRaBS J0948+0022 detected on Oct. 12 and 13 with daily flux of
    (0.5+/-0.2)x10-6 and (0.6+/-0.2)x10-6.

  • BL Lac, 4C +29.45, PKS 0426-380 and PKS 0528+134 detected only once this week with daily flux of (1.2+/-0.2)x10-6, (0.7+/-0.2)x10-6, (0.8+/-0.2)x10-6 and (0.6+/-0.2)x10-6 respectively.

  • Sporadic daily detections of blazars with daily fluxes below 0.5e-6 :
    PKS 1004-217, B3 1343+451, B2 1520+31, PKS 0627-199.



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:

- L. Escande (escande@cenbg.in2p3.fr) for generic information related to this week

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




Tuesday, October 18, 2011

Fermi LAT weekly report N. 174



Covered period: 2011 October 03 - 09

LAT Mission week: 174.57 - 175.57




  • 4C +28.07 detected in a flaring state, reaching a daily peak flux of
    (2.3 ± 0.3) x 10-6 on Oct. 4 (Atel #3670, #3676).

  • OJ 287 was detected throughout the week with increasing flux,
    reaching a daily value of (0.8 ± 0.2) x 10-6 on Oct 7 (ATel #3680).

  • 3C 446 showed a fast flare on Oct. 8, with a daily average value of
    (1.5 ± 0.4) x 10-6 (ATel #3675).

  • PKS 0454-234 was detected multiple times during the week, with daily
    flux levels around 1 x10-6.

  • TeV source PKS 1510-089 started to brighten on Oct. 7, reaching a
    daily flux value of (3.3 ± 0.5) x 10-6 by the end of the week.

  • TeV source NGC 1275 showed a fast outburst on Oct. 6, with a daily
    flux of (0.6 ± 0.2) x -6.

  • Other active extragalactic sources were: S5 0716+71, PKS
    0627-199
    , 4C +38.41.

  • The last six hours on Oct. 5 were impacted by pointed observations
    toward the Earth (nadir).



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:

- F. Schinzel (schinzel[at]mpifr.de) for generic information related to this week

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




Tuesday, October 11, 2011

Fermi LAT weekly report N. 173



Covered period: 2011 September 12-18

LAT Mission week: 173.57 - 174.57





  • PKS 0402-362 was very bright on Sept. 26 (daily flux about 2.2E-6) and decreasing during the rest of the week.

  • 4C +28.07 showed a flare on Sept. 30 when the daily averaged flux observed was about 1E-6.

  • The Sun was detected on daily interval (flux about 0.6E-6) on Sept. 29.

  • The other blazars detected at least in a day of the week (all below 1E-6 in flux) were:
    NGC 1275, Mkn 421, BL Lac, OJ 287, PKS 1830-211, PKS 0537-441, S5 0716+71, PKS 1510-08, PKS 1124-186, Ton 599, TXS 1530-131, 4C +55.17, B2 0716+33, PKS 1424+240, S4 1030+61, PKS 0301-243, PKS 2227-08, B3 1343+451.


Fluxes are in the unit of photons/cm^2/s above 100 MeV.


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]asdc.asi.it) for generic information related to this week

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