Monday, December 31, 2012

Fermi LAT Weekly report N. 237


Covered period: 2012 December 17-23
LAT Mission week: 237.57 - 238.57

  • A flare of the BL Lac object PKS 0426-380 was observed in the days between Dec. 17 and 20 (see ATel#4660).
  • Blazars PKS 0454-234PKS 1510-08, 4C +38.41 (also known as B2 1633+38) , PKS 1424-41, and MG1 J123931+0443 (also known as GB6 J1239+0443) were in high state with a daily flux level equal or above 1E-6 in some days of the week.   
  • Bright blazars detected with daily flux between about 0.5E-6 and 1.0E-6 in some days of the week were: CTA 102,  3C 454.3,  RX J1700.1+6830 (also known as GB6 J1700+6830) on Dec. 23,  3C 273, PKS 0521-36B2 1846+32A (2FGL J1848.5+3216, a FSRQ)  or  B2 1846+32B (2FGL J1848.6+3241, an AGN of unknown type) on Dec. 18, and PMN J0948+0022.
  • Other blazars detected during the week, with daily flux value equal or below 0.5e-6 level were: S4 1749+70, Mkn 421, PKS 0250-225, PKS 0537-441, S5 0716+71, PKS 1124-186, BL Lacertae,  PKS 0135-247, TXS 1318+225,  3C 66A  and W Comae (on Dec. 23).

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, December 19, 2012

Fermi LAT Weekly Report N. 236



Covered period: 2012.December.10 - 2012.December.16
LAT Mission week: 236.57 - 237.57

  • PKS 0454-234 detected all week, with a daily flux between (0.7±0.2) X 10-6 and (1.1±0.2) X 10-6.
  • PKS 0426-380 detected on 11, 12, 13, 14, 15, and 16 December, with a daily flux between (0.6±0.2) X 10-6 and (0.8±0.2) X 10-6.
  • MG1 J123931+0443 detected on 10, 13, 14, 15, and 16 December, with a daily flux between (0.5±0.2) X 10-6 and (1.6±0.3) X 10-6.
  • PKS 1510-089 detected on 12, 13, 14, 15, and 16 December, with a daily flux between (0.8±0.3) X 10-6 and (2.0±0.5) X 10-6.
  • PKS B1424-418 detected on 10, 11, 13, and 15 December, with a daily flux between (0.9±0.3) X 10-6 and (1.4±0.3) X 10-6.
  • CTA 102 detected on 10, 11, 12, and 16 December, with a daily flux between (0.6±0.2) X 10-6 and (1.1±0.3) X 10-6.
  • S3 0218+35 detected on 10, 11, and 13 December, with a daily flux between (0.9±0.2) X 10-6 and (1.2±0.2) X 10-6.
  • PKS 1124-186 detected on 11, 12, and 14 December, with a daily flux between (0.3±0.1) X 10-6 and (0.6±0.2) X 10-6.
  • PKS 0521-36 detected in high activity on 12 December, with a daily flux of (1.8±0.2) X 10-6.
  • OJ 248 detected on 12, and 13 December, with a daily flux of (1.5±0.3) X 10-6 and (0.3±0.2) X 10-6, respectively.
  • Sporadic activity (fluxes below 1 X 10-6): B2 1324+22 (10 December), 4C +38.41 (10 and 11 December), Mkn 421 (11 and 14 December), PMN J2345-1555 (11 and 13 December), PKS 0250-225 (12 December), PKS 2233-148 (12 December), S5 0716+714 (16 December).
  • 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) and F. D'Ammando (filippo.dammando[at]fisica.unipg.it) for generic information related to this week
    - Contact persons on this page for individual sources cited above.


Wednesday, December 12, 2012

Fermi LAT Weekly Report N. 235


Covered period: 2012 December 3-9
LAT Mission week: 235.57 - 236.57

  • 4C +38.41 (B2 1633+38) is bright and active on Dec 3, 4, 7 and 8 with daily averaged flux above 1e-6. 
  • Gravitationally lensed blazar S4 0218+35 and blazars PKS 0454-234, MG1 J123931+0443, CTA 102 are bright, reaching a daily flux level of 1e-6 during the week.
  • BL Lacertae in flaring state at a level of 1e-6 on Dec. 6 and 7. The source faded in the following days.
  • Blazars S3 0827+24, PKS 1124-186, PKS 1244-255, PKS 1424-41, PKS 2233-148 and PKS 2320-035 are detected in some days of the week in rather bright state (flux level between 0.5e-6 and 1e-6).
  • Other blazars detected during the week, with daily flux below 0.5e-6 level are: Mkn 421, 3C 273,  PKS 0426-380, 4C +21.35 (PG 1222+216), B3 1343+451, TXS 1700+685, PKS 2023-07, PMN J2345-1555.

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.


Friday, December 7, 2012

Fermi LAT Weekly Report N. 234



Covered period: 2012.Nov.26 - 2012.Dec.02
LAT Mission week: 234.57 - 235.57

  • TXS 1318+225 detected on 26, 27, 28 and 29 November with a daily flux between (0.4+/-0.2)e-6 and (0.9+/-0.2)e-6. On 26 November the source reached its maximum flux increasing of a factor around 35 with respect to the average 2FGL flux. An ATel on the enhanced gamma-ray activity of this source was posted (ATel#4609).
  • MG1 J123931-0443 bright all the week but 29 and 30 November, with daily fluxes between (0.6+/-0.2)e-6 and (1.1+/-0.3)e-6.
  • Mrk 421 detected on 27, 29, 30 November, 1 and 2 December with daily fluxes ranging between (0.3+/-0.1)e-6 and (0.5+/-0.2)e-6.
  • 4C+38.41 detected on 26, 30 November and 1 December with a daily flux of (1.0+/-0.3)e-6, (0.7+/-0.3)e-6 and (0.9+/-0.2)e-6, respectively.
  • The gravitationally lensed blazar S4 0218+35 was bright on 28 November, 1 and 2 December with daily fluxes between (0.6+/-0.2)e-6 and (1.4+/-0.2)e-6.
  • PKS 1424-418 detected on 30 November, 1 and 2 December with a daily flux of (0.8+/-0.2)e-6, (0.6+/-0.2)e-6 and (0.5+/-0.2)e-6, respectively.
  • PKS 1510-089 detected on 27 and 28 November with a daily flux of (0.9+/-0.3)e-6 and (1.1+/-0.2)e-6, respectively.
  • PKS 0426-380 was bright on 30 November and 1 December with a daily flux of (0.5+/-0.2)e-6 and (0.6+/-0.3)e-6, respectively.
  • PKS 1124-186 detected on 1 and 2 December with a daily flux of (0.7+/-0.2)e-6 and (0.3+/-0.1)e-6, respectively.
  • Finally, S3 0827+24 detected on 26 November at a daily flux of (1.0+/-0.2)e-6, 4C+21.35 detected on 27 November at a daily flux of (1.0+/-0.3)e-6 and PKS 0454-234 bright on 2 December with a daily flux of (1.1+/-0.3)e-6.
  • Sporadic daily detections of blazars (fluxes below 1e-6): B2 1846+32A (29 Nov.), BL Lac, 4C+55.17, PKS 2233-148 (30 Nov.), PKS 2155-304 (1 Dec.).

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) and F. D'Ammando (filippo.dammando[at]fisica.unipg.it) for generic information related to this week
- Contact persons on this page for individual sources cited above.