Tuesday, March 27, 2012

Fermi LAT weekly report N. 198



Covered period: 2012.March.19 - 2012.March.25

LAT Mission week: 198.57 - 199.57





  • A new gamma-ray source ASPJ053850+143951 in the vicinity of the flat spectrum radio quasar TXS 0536+145 (z=2.69) was detected on high activity on March 22, with a daily flux of (0.6±0.2) X 10-6. See ATel#3999.

  • S5 0716+71 detected on March 19, 20, 21, and 22, with a daily flux between (0.5±0.2) X 10-6 and (0.6±0.2) X 10-6.

  • PKS 1510-08 detected on high state on March 19, 20, and 21, with a daily flux between (2.7±0.5) X 10-6 and (1.1±0.3) X 10-6.

  • PKS 0454-234 detected on March 19, 24, and 25, with a daily flux between (0.8±0.2) X 10-6 and (1.0±0.2) X 10-6.

  • BL Lacertae detected on March 23 and 24 with a daily flux of (0.9±0.2) X 10-6 and (0.7±0.2) X 10-6, respectively.

  • Sporadic daily detections of blazars (fluxes below 1 X 10-6 ): B2 2155+31 (March 19), PKS 0537-441 (March 20), B3 1343+451 (March 21), PMN J0531-4827 (March 25), PKS 1244-255 (March 25).


  • 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:

    - M. Orienti (orienti[at]ira.inaf.it) for generic information related to this week

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






Tuesday, March 13, 2012

Fermi LAT weekly report N. 196



Covered period: 2012 March 5-11 LAT Mission week: 196.57 -
197.57




  • Significant gamma-ray emission detected by the LAT from relevant Solar Flares occurred on March 5, March 7 and March 9.

  • PKS 1510-08 subject to an enduring high gamma-ray brightness state all week (weekly average flux about 3.7E-6).

  • S5 0716+71, PKS 1424-41, Mkn 421 are detected most days of the week (below daily level of  1E-6).

  • PKS 0454-234B3 1343+451, Ton 599, B2 1520+31, BL Lac, Mkn 501PKS 2255-282, S5 1803+78 are the other blazars detected in one or some days of the week.

  • Crab source actively rumbling during the week, exceeding the daily flux level of 4E-6 in the midst of the week.


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]asdc.asi.it) for generic information related to this week
- Contact persons on this page for individual sources cited above.



Saturday, March 10, 2012

Fermi LAT weekly report N. 195



Covered period: 2012.Feb.27 - 2012.Mar.4

LAT Mission week: 195.57 - 196.57





  • PKS 1510-089 (z=0.36) was active all week with fluxes ranging between 4.5 and 7.1 X 10-6.

  • BL Lac was detected at (1.3 +/- 0.3) X 10-6 on February 27 and later continued at flux levels 0.7 - 1.0 X 10-6 until March 3.

  • PKS 0402–362 was detected at (1.8 +/- 0.4) X 10-6 on March 3.

  • S5 716-71 continued to be detected at flux level (0.5 +/- 0.1) X 10-6 or below until February 29

  • PKS B1424-418, PKS 2255-282, S5 1803+784, B3 1343+451, PKS 2326--502, PKS 0454--234 were detected sporadically throughout the week at flux levels below 1 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:

- A. Szostek (aszostek[at]slac.stanford.edu) for generic information related to this week

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




Monday, March 5, 2012

Fermi LAT weekly report N. 194



Covered period: 2012.Feb.20 - 2012.Feb.26

LAT Mission week: 194.57 - 195.57





  • PKS 1510-089 (z=0.36) was active all week with fluxes ranging from 2.3-7.4 X 10-6

  • PKS 0402-362 was bright on February 20 at a flux of (1.1 ± 0.3) X 10 -6 it declined to (0.7 ± 0.2) X 10^-6 on Tuesday and then was not detected the rest of the week.

  • PKS 2255-282 was detected at a flux of 1 X 10-6 on February 26 2012, since this was the first time a flare from this source has been detected Atel #3948 was submitted.

  • S5 716-71 was detected every day this at flux level at or below (0.5 ± 0.1) X 10-6

  • PKS 0454-234 was detected at (1.0 ± 0.3) X 10-6 on February 26.

  • PKS 1424-41, NGC 1275, 4C +28.07, Mrk 421, PKS 0537-441, S5 1803+78, PKS 0521-36, PMN J2250-2806, PKS 2326-502 detected sporadically throughout the week at flux levels below 1 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:

- M. Dutka (ditko86[at]gmail.com) for generic information related to this week

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