Wednesday, November 30, 2011

Fermi LAT weekly report N. 181



Covered period: 2011.Nov.21 - 2011.Nov.27

LAT Mission week: 181.57 - 182.57





  • ASPJ134924-113145 (FERMI J1350-1140) detected on November 25 with a daily flux (1.2+/-0.2)e-6. See also ATel #3788. The preliminary best-fit location of the gamma-ray source (R.A.= 207.51 deg, Dec.= -11.68 deg, J2000) has a 95% containment radius of 0.15 deg (statistical errors only) for observations from 20 to 26 November 2011. The source is not present in any Fermi LAT catalog released up to now and there is no previously reported EGRET gamma-ray detection at this location. The nearest flat spectrum radio source is PKS 1346-112.


  • 4C +28.07 bright all week, with a daily flux between (0.9+/-0.2)e-6 and (1.5+/-0.3)e-6.


  • PKS 1424-41 detected on November 21-24 and 27 with a daily flux between (0.6+/-0.2)e-6 and (0.9+/-0.2)e-6.


  • PKS 1510-08 detected on November 21 and 22 with a daily flux of (2.0+/-0.3)e-6 and (1.5+/-0.3)e-6, respectively.


  • PKS 0454-234 detected on November 23-25 with a daily flux between (1.0+/-0.3)e-6 and (1.1+/-0.4)e-6.


  • B3 1343+451 regularly detected starting from November 23 with a daily flux between (0.6+/-0.2)e-6 and (0.9+/-0.2)e-6.


  • Sporadic daily detection of blazars: BL Lacertae (Nov 21), PKS 0537-441 (Nov 23 and 25), 4C +71.07 (Nov 23 and 24), B2 1846+32A (Nov 23 and 24), PKS 1244-255 (Nov 25), B2 1520+31 (Nov 25 and 26), S5 0716+714 (Nov 26), 3C 279 (Nov 27), PKS 1145-071 (Nov 27).



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:

- E. Torresi (torresi[at]iasfbo.inaf.it) for generic information related to this week

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




Thursday, November 24, 2011

Fermi LAT weekly report N. 180



Covered period: 2011.Nov.14 - 2011.Nov.20

LAT Mission week: 180.57 - 181.57





  • PKS 1510-089 in high state starting from November 15, with a daily flux between (1.3+/-0.2)e-6 and (3.8+/-0.4)e-6.

  • 4C +28.07 bright all the week, with a daily flux between (1.4+/-0.2)e-6 and (1.7+/-0.3)e-6.

  • S5 0836+71 (4C +71.07) detected on November 15, 19, and 20, with a daily flux between (0.8+/-0.2)e-6 and (1.5+/-0.2)e-6.

  • B3 1343+451 detected on November 16, 17, and 18, with a daily flux of (0.4+/-0.2)e-6, (0.9+/-0.3)e-6, and (0.3+/-0.1)e-6, respectively.


  • Sporadic daily detections of blazars: Mkn 421 (Nov 14 and 16), PKS 1124-186 (Nov 14 and 16), PKS 1424-41 (Nov 14), TXS 0059+581 (Nov 15), PKS 2326-502 (Nov 16 and 20), Mkn 501 (Nov 19), PKS 1244-255 (Nov 19).



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. D'Ammando (dammando[at]ira.inaf.it) for generic information related to this week

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




Wednesday, November 16, 2011

Fermi LAT weekly report N. 179



Covered period: 2011 November 7-13

LAT Mission week: 179.57 - 180.57





  • Gamma-ray flare of blazar OG 050 (TXS 0529+075, z=1.254) on Nov.7 (see ATel#3750). This FSRQ kept bright all the week (peak daily flux of 1.6E-6 on Nov.9).

  • PKS 1510-08 was in very high state (daily flux 8.2E-6 on Nov.7) fading slowly during the week. 

  • S5 0836+71 (4C +71.07) still bright in the first part of the week (above 2E-6).

  • PKS 0454-234, BL Lac, and 4C +28.07 (B2 0234+28) are the blazars detected above 1E-6 in some days of the week.

  • The sun is detected on Nov. 7 and the Galactic center source is clearly detected above 2E-6 on Nov.9 and Nov.11.

  • HMXRB/MQ LS 5039 and LS I+61 303, SNR IC 443 and W44 detected in some days of the week.

  • Other blazars detected on daily time bins, below 1E-6 are: PKS 1124-186, PMN J2345-1555, PKS 2326-502, Mkn 501, Mkn 421, S5 0716+71, B2 0716+33, 3C 279, B2 1520+31, B3 1343+451, PKS 2320-035, Ton 599 (4C +29.45), TXS 0059+581, PKS 2155-304, OJ 287, PKS 1424-41.



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.



Tuesday, November 8, 2011

Fermi LAT weekly report N.178



Covered period: 2011.Oct.31 - 2011.Nov.06

LAT Mission week: 178.57 - 179.57





  • 4C +28.07 was very bright all week with daily flux above 0.9 X 10-6 and reaching the highest value on Nov. 2 (1.5 X 10-6).

  • PKS 0454-234 showed an increase of luminosity, with daily flux starting at 0.5 X 10-6 and culminating on Nov. 4 at 1.3 X 10-6.

  • B2 0716+33 was detected after Nov. 3 with flux decreasing from 0.8 to 0.3 X 10-6.

  • 4C +71.07 showed a flaring activity on Nov. 1 (daily flux 3.6 X 10-6) and remained active for the rest of the week (flux in the range 1.1-1.5 X 10-6).

  • OJ 287 was detected all week with daily flux in the range 0.8-1.6 X 10-6.

  • Mkn 421 was detected on Nov. 1, 4, and 5 with daily flux of 0.2 X 10-6.

  • B3 1343+451 was detected all week with daily flux in the range 0.4-0.9 X 10-6.

  • PKS 1510-08 was extremely bright all week long, with daily flux above 2.6 X 10-6 and reaching the maximum intensity on Nov. 2 and 3, with flux above 1.0 X 10-5.

  • BL Lac was detected on Oct. 31, and Nov. 1 and 6 with daily flux in the range 1.2-1.9 X 10-6.

  • PKS 2326-502 was detected all week with daily flux in the range 0.4-0.6 X 10-6.

  • PMN J2345-1555 showed a rising daily flux from 0.4 on Oct. 31 to 1.5 X 10-6 on Nov. 4. It faded afterwards reaching 0.6 X 10-6 by the end of the week.

  • Sporadic activity (fluxes below 1.0 X 10-6) observed from PKS 1124-186 (0.6 on Nov. 3 and 0.7 on Nov. 5), B2 1520+31 (0.5 on Nov. 4 and 0.2 on Nov. 5), PKS 0301-243 (0.2 on Nov. 2), PKS 0524-485 (0.4 on Oct. 31), OG 050 (0.6 on Nov. 5), AP Lib (0.8 on Nov. 4), and Mkn 501 (0.4 on Nov. 3)



Fluxes are in the units 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. Donato (donato[at]milkyway.gsfc.nasa.gov) for generic information related to this week

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




Fermi LAT weekly report N.177



Covered period: 2011.Oct.23 - 2011.Oct.30

LAT Mission week: 177.57 - 178.57





  • PKS 1510-089 continues to be detected all week with daily fluxes around or above 1.5 X 10-6.

  • Mkn 421 quite active during the week reaching a flux of 0.4 X 10-6 on 24th and 28th October

  • 4C +28.07 bright all the week (flux approaching around 1 X 10-6).

  • PKS 0454-234 and S5 0716+714 continue to be detected all week with daily fluxes below 1 X 10-6.

  • OJ 287, PKS 1424+240, B2 1520+31, PKS 1124-186, PKS 2345-16 detected in one or two days of the week (flux 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:

- S. Cutini (sara.cutini[at]asdc.asi.it) for generic information related to this week

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