Monday, August 26, 2013

Fermi LAT Weekly Report N. 272

Covered period: 2013.Aug.19 - 2013.Aug.25
LAT Mission week: 272.57 - 273.57
  • PKS0920-39 (RA: 140.548 Dec: -39.7036) was detected with daily averaged gamma-ray flux (0.9 +/- 0.2) on August 23, 2013. This source is not included in any Fermi LAT catalog. Regarding this detection, ATel #5326 was posted.
  • 4C +38.41 was detected all week with a daily averaged flux between (0.6 +/- 0.2) and (1.8 +/- 0.4).
  • 3C 454.3 was detected 5 days in this week with a daily averaged flux between (0.6 +/- 0.2) and (1.1 +/- 0.3).
  • PKS B1424–418 was detected 3 days in this week with a daily averaged flux between (0.5 +/- 0.2) and (1.1 +/- 0.3).
  • PKS B1510-08 was detected 3 days in this week with a daily averaged flux between (1.2 +/- 0.3) and (2.9 +/- 0.5).
  • BL Lac was detected 2 days in this week with a daily averaged flux at (0.4 +/- 0.2).
  • Sporadic daily detections of blazars: PKS 0454-234, Mkn 421, NGC 1275, OX 169, CTA 102, B2 2319+31.

Fluxes are in the unit of 10-6 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.

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Saturday, August 24, 2013

Fermi LAT Weekly report N. 271

Covered period: 2013 August 12-18
LAT Mission week: 271.57 - 272.57
  • Star Nova Delphini 2013 detected in gamma-ray band with a flux level of (0.33+/-0.08)E-6 on August 18. See ATel#5302.
  • Bright blazars of the week, showing daily flux oscillating around 1E-6 flux level are: PKS 1424-41,  3C 454.3, 4C +38.41 (B2 1633+38) and PKS 1510-08.
  • Radiogalaxy NGC 1275 (Perseus A) detected with increasing flux during the week and approaching 1E-6 level.
  • Blazar CTA 102  bright and detected almost all the week with daily flux around 0.7E-6.
  • Other blazars detected in some days of the week (with daily flux lower than about 0.5E-6): Mkn 421, BL Lacertae, PKS 2320-035, PKS 2326-502,  PMN J1506+0814 (detected on August 14),  PKS 0426-380,  PKS 2155-304,  NRAO 190 (detected on August 15), PKS 1016-311 (detected on August 16), B2 1520+31, 1ES 1959+650, B2 2319+31 (detected on August 18).

  
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.

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Wednesday, August 14, 2013

Fermi LAT weekly report N. 270

Covered period: 2013.August.05 - 2013.August.11
LAT Mission week: 270.57 - 271.57
  • Blazar 4C +38.41 (B2 1633+38) was bright all week despite decreased flux with respect the week before. It was detected every day with a daily averaged flux between (1.3 ± 0.3) and (2.0 ± 0.3).
  • Mkn 421 was detected nearly every day, with averaged flux values < (0.6 ± 0.2).
  • 4C +21.35 (PKS 1222+21) was detected three times this week, with a decreasing flux value from (1.0 ± 0.2) on August 5, to (0.6 ± 0.2) recorded on August 11.
  • PKS 1510-08 was detected every day except on August 9, with averaged daily fluxes always greater than (1.0 ± 0.2), reaching its peak flux value of (1.6 ± 0.4) on August 8.
  • PKS 1424-41 was detected the last 4 days of the week with flux values always below 0.9.
  • The blazars detected sporadically with flux values equal or below 0.8 were: PKS 1124-186, PKS 2326-502, NGC 1275, and PKS 2155-304. The only exception was PKS 0805-07, detected on August 8 with flux value of (1.1 ± 0.4).

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:
- E. Antolini (elisa.antolini@fisica.unipg.it) for generic information related to this week
- Contact persons on this page for individual sources cited above.

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Wednesday, August 7, 2013

Fermi LAT Weekly Report N. 269

Covered period: 2013 July 29 - August 4
LAT Mission week: 269.57 - 270.57
  • Blazar 4C +38.41 (B2 1633+38) always in high state, detected all week with a daily averaged flux between (1.9 ± 0.2) and (2.2 ± 0.3).
  • PKS 0440-00 in high state on the last days of July, reaching a maximum on July 30 with a daily averaged flux of (3.2 ± 0.4).
  • PKS 0754+241 had a short flare (6-12 hours) between July 31 and August 1, reaching a flux of (2.5 ± 0.7) at its peak.
  • PKS 1424-41 was detected on August 2 with a daily averaged flux of (1.5 ± 0.3) and August 3 (0.9 ± 0.3).
  • PKS 0454-234 was detected on July 29, July 31 and August 1, with daily averaged flux between (0.5 ± 0.2) and (0.9 ± 0.3) reached on August 1.
  • 3C 279 detected on July 29, July 30, July 31 and August 3 with daily averaged flux between (0.7 ± 0.3) and (1.0 ± 0.3).
  • Sporadic daily detections of blazars during the week, with daily flux value equal or below 0.7 are: PMN J2345-1555, Mkn 421, PKS 0426-380, NGC 1275, B2 2319+31, 3C 454.3, and 4C +01.02.

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:
- D. Bastieri (bastieri[at]pd.infn.it) for generic information related to this week
- Contact persons on this page for individual sources cited above.

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Monday, August 5, 2013

Fermi LAT Weekly Report N. 268

Covered period: 2013.July.22 - 2013.July.28
LAT Mission week: 268.57 - 269.57
  • Blazar4C +38.41 (B2 1633+38) is strongly active during the whole week reaching the highest flux detected by Fermi on July 27 (daily flux 2.9 +/- 0.3 X 10-6). See ATel#5232.
  • B2 2319+31 was about 27 times the average flux of 2FGL on July 26 (daily flux 0.7 +/- 0.2 X 10-6).See ATel#5231.
  • 4C +21.35 is strongly active all week (daily flux approaching 1.8 X 10-6 on July 25).
  • PKS 1424-418 is bright in the first part of this week (daily flux around 1.8 X 10-6 on July 22).
  • PKS 0426-38, PMN J2345–1555, PKS 0454-234 are detected almost every day (daily flux below 1.0 X 10-6).
  • PKS 0440-00 (NRAO 190) is bright in the last part of this week (daily flux reached 1.8+/- 0.2 X 10-6 on July 25).
  • Sporadic daily detections of some sources during the week: 4C +01.02, 3C 279, MKN 421, NGC 1275, 3C 454.3,B2 1520+31 (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:
- D. Gasparrini (gasparrini[at]asdc.asi.it) for generic information related to this week
- Contact persons on this page for individual sources cited above.
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