Thursday, January 31, 2013

Fermi LAT Weekly report N. 242



Covered period: 2013.January.21 - 2013.January.27
LAT Mission week: 242.57 - 243.57

  • PKS 2155-304 was detected in flaring state on January 21 with a daily flux of (1.4±0.4) X 10-6. See ATel#4755. The source was also detected in the first six hours of January 21 with a flux of (2.5±0.8) X 10-6.
  • PKS 1424-41 was detected in high activity state all days of the week, with a daily flux between (1.5±0.3) X 10-6 and (2.5±0.3) X 10-6. ToO Swift observation detected an high level flaring activity also in X-ray band on January 24 and 27. See ATel#4770.
  • PMN J2345–1555 was detected on January 21, 23, 24 and 25 with a flux below 1 X 10-6.
  • PKS 1124-186 detected on January 21, 24, 25, and 27, with a daily flux below 1 X 10-6.
  • 3C 454.3 was detected every day of the week with a daily flux above 1 X 10-6.
  • 4C +38.41 was detected all week with a daily flux greater than 1 X 10-6.
  • NGC 1275 was detected on January 22 and 25 with a daily flux below 1 X 10-6.
  • Sporadic activity (fluxes below 1 X 10-6): Mkn 421, PKS 0426-380, MG1 J123931+0443, PKS 1510–08, S5 1044+71 and 4C +01.02.

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.


Thursday, January 24, 2013

Fermi LAT Weekly report N. 241


Covered period: 2013 Jan. 14-20
LAT Mission week: 241.57 - 242.57

  • Gamma-ray flare from a source positionally consistent with NGC 1275 (also known as 2FGL J0319.8+4130, Perseus A, 3C 84, a radio galaxy located at the center of the Perseus galaxy cluster), detected on Jan. 20 with daily flux (1.1+/-0.3)E-6. Fermi already observed increased GeV activity in 2010 leading to the discovery of VHE gamma-ray emission by the MAGIC imaging air Cherenkov telescopes. NGC 1275 has been in a relatively high gamma-ray state in the last months and now the (E>100MeV) flux is reaching the highest historical value observed by Fermi LAT for the source (see ATel#4753).
  • PKS 1424-41 in enduring flaring state (daily flux around 2E-6 in most days of the week, and peaking at about 2.6E-6 on Jan. 20).
  • Flare of the high-redshift blazar PKS 2149-306 on Jan. 20 with daily flux about 3.2E-6.
  • Blazars MG1 J123931+0443, 3C 454.3, CTA 102, BL Lacertae (on Jan. 14) and 4C +38.41 (also known as B2 1633+38) were detected in high state with a daily flux level equal or above 1E-6 at last in one day of the week. 
  • Bright blazars detected with daily flux between about 0.5E-6 and 1.0E-6 during the week were: PKS 1510-08, S3 0827+24, PMN J2345-1555, GB6 J1239+0443, PKS 1244-255, PKS 0426-380
  • Other blazars detected, also in a single day, during the week, with daily flux value equal or below 0.5E-6 were: TXS 1433+205, PKS 1502+106, B3 1343+451, Mkn 421, PKS 1124–186

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.


Wednesday, January 16, 2013

Fermi LAT Weekly Report N. 240


Covered period: 2013.January.7 - 2013.January.13
LAT Mission week: 240.57 - 241.57

  • PMN J2345-1555 was detected on January 10, 11, 12, and 13 with a daily flux between (0.6+/-0.2)X10-6 and (1.1+/-0.2)X10-6. Clear spectral hardening was detected on January 13. See ATel#4735.
  • PKS B1424-418 was detected every day with a daily flux between (1.3+/-0.2)X10-6 and (2.5+/-0.3)X10-6.
  • PKS 2149-306 was detected on January 8, 9, 10, 11, 12, and 13 with a daily flux between (1.1+/-0.2)X10-6 and (2.0+/-0.3)X10-6.
  • MG1 J123931+0443 was detected on January 7, 9, 10, 11, and 12 with a daily flux between (0.7+/-0.2)X10-6 and (1.2+/-0.3)X10-6.
  • PKS 1510-089 was detected on January 11, 12, and 13 with a daily flux between (0.7+/-0.2)X10-6 and (1.1+/-0.2)X10-6.
  • BL Lac was detected on January 7, 12, and 13 with a daily flux between (1.1+/-0.2)X10-6 and (1.4+/-0.3)X10-6.
  • CTA 102 was detected on January 7 and 8 with daily fluxes of (1.6+/-0.3)X10-6 and (1.2+/-0.3)X10-6, respectively.
  • 3C 454.3 was detected on January 12 and 13 with daily fluxes of (0.8+/-0.3)X10-6 and (1.5+/-0.4)X10-6, respectively.
  • Sporadic activity (fluxes below 1.0X10-6): NGC 1275 (January 7 and 11), 4C +38.41 (January 7 and 10), PKS 0426-380 (January 7), PKS 0250-255 (January 7), B3 1343+451 (January 11), Mrk 421 (January 13).

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:
- Y. Tanaka (ytanaka[at]hep01.hepl.hiroshima-u.ac.jp) for generic information related to this week
- Contact persons on this page for individual sources cited above.


Wednesday, January 9, 2013

Fermi LAT Weekly Report N. 239



Covered period: 2012.December.31 - 2013.January.6
LAT Mission week: 239.57 - 240.57

  • PMN J0948+0022 detected in flaring activity on January 1 with a daily flux (1.7±0.5) X 10-6. See ATel#4694. The source was also detected on January 5, with a daily flux (0.6±0.2) X 10-6.
  • PKS 2149-306 detected in flaring activity on January 4 with a daily flux (1.5±0.2) X 10-6. See ATel#4706.
  • PKS B1424-418 detected in high activity on January 1, 2, 3, 4, 5, and 6, with a daily flux between (1.3±0.3) X 10-6 and (2.3±0.4) X 10-6. See ATel#4714.
  • MG1 J123931+0443 detected all week, with a daily flux between (0.7±0.2) X 10-6 and (1.4±0.3) X 10-6.
  • Mrk 421 detected on December 31, January 1, 2, 5, and 6, with a daily flux between (0.3±0.1) X 10-6 and (0.7±0.2) X 10-6.
  • CTA 102 detected on January 1, 4, 5, and 6, with a daily flux between (0.5±0.2) X 10-6 and (1.0±0.3) X 10-6.
  • 4C +38.41 detected on December 31, January 4, and 6, with a daily flux between (0.6±0.2) X 10-6 and (0.9±0.3) X 10-6.
  • B3 1343+451 detected on January 3, 4, and 5, with a daily flux between (0.3±0.1) X 10-6 and (0.4±0.1) X 10-6.
  • PMN J2345-1555 detected on January 3, 5, and 6, with a daily flux between (0.5±0.2) X 10-6 and (0.7±0.2) X 10-6.
  • BL Lacertae detected on January 2, and 4, with a daily flux of (0.5±0.2) X 10-6 and (1.8±0.4) X 10-6, respectively.
  • PKS 1510-08 detected in high activity on January 4, with a daily flux of (1.0±0.3) X 10-6.
  • Sporadic activity (fluxes below 1 X 10-6): PKS 1124-186 (December 31), PKS 0454-234 (January 1, and 6), PKS 0426-380 (January 2), S3 0827+24 (January 3), 4C +48.41 (January 4).

    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 (filippo.dammando[at]fisica.unipg.it) and M. Orienti (orienti[at]ira.inaf.it) for generic information related to this week
    - Contact persons on this page for individual sources cited above.


Thursday, January 3, 2013

Fermi LAT Weekly Report N. 238


Covered period: 2012.Dec.24 - 2012.Dec.30
LAT Mission week: 238.57 - 239.57

  • PMN J2012-1646 was detected on Dec 28 with flux (0.7+/-0.2) X 10-6 . An Astronomer's Telegram (ATel#4688) was issued on 2012 Dec 30.
  • PKS B1424-418 was detected all week with fluxes between (0.9 +/- 0.2) X 10-6 and (1.5 +/- 0.4) X 10-6.
  • S3 0827+24 was detected on Dec 24 and 25 with a peak daily averaged flux of (1.2 +/- 0.3) X 10-6.
  • 3C 454.3 was detected Dec 26-28 with a daily averaged flux between (0.6 +/- 0.2) X 10-6 and (1.2 +/- 0.4) X 10-6.
  • PKS 0426-380 was detected all week. The daily averaged flux was between (0.6 +/- 0.2) X 10-6 and (1.0 +/- 0.2) X 10-6.
  • MG1 J123931+0443 was detected on Dec 30 with a daily averaged flux of (1.1 +/- 0.3) X 10-6.
  • Sporadic daily detections of blazars (fluxes below 1X10-6): PKS 0454-234, PKS 1124-86, 4C +38.41, TXS 1700+685, PKS 0521-36, NGC 1275, 1H 0323+342, Mrk 421, PKS 1244-255, S4 1749+70, CTA 102, PKS 2155-304, Mrk 501, 4C +48.41, NRAO 676, PMN J0948+0022, J123939+044409, 1633+382, 3C 273, PKS 1329-049, PMN J2345-1555, ASPJ202124+365447, PMN J0948+0022, ASPJ141708p354935.

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:
- R. Ojha (Roopesh.Ojha[at]gmail.com) for generic information related to this week
- Contact persons on this page for individual sources cited above.