Tuesday, January 7, 2014

Fermi LAT Weekly report N. 291

Covered period: 2013 December 30 - 2014 January 5
LAT Mission week: 291.57 - 292.57
  • 3C 279 in high state during the week with daily flux above 1E-6 and peaking on January 1 at about 1.8E-6.
  • 4C +21.35 (PG 1222+216)  in high state during the week with daily flux above 1E-6 and peaking on January 3 and 5 at about 1.7E-6.
  • PKS 2326-502 bright in some days of the week and peaking on January 3 at about 1.3E-6.
  • 4C +38.41 (B2 1633+38) and PKS 1424-41 both bright in some days of the week and peaking at about 1.2E-6 respectively on January 3 and 5.
  • NGC 1275  (Per A) increased its activity during the week reaching a daily flux level of about 1E-6 on January 2, 3 and 5. 
  • S5 1044+71 rather bright during the week and peaking on December 31, January 1 and 2 at about 0.8E-6.  
  • Other blazars detected in some days of the week with a daily flux lower than about 0.7E-6: PG 1553+113, PKS 1510-089, Mkn 421, PKS 0735+17, PKS 0208-512, B3 1343+451, PKS 0426-380, PKS 0454-234, 3C 454.3, PKS 0336-01,  4C +28.07 (OD 258, B2 0234+28).
  • Three GRBs clearly detected by the LAT during the week: GRB 131231A, GRB 140102A and GRB 140104B.

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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Sunday, January 5, 2014

Fermi LAT Weekly Report N. 290

Covered period: 2013.Dec.23 - 2013.Dec.29
LAT Mission week: 290.57 - 291.57
  • A flare from PKS 2136-642 was detected. It peaked on Dec. 23 with a daily averaged flux of (1.3 +/- 0.4) (See ATel #5695)
  • PKS 1730-13 was detected Dec. 23 with a daily averaged flux of (1.5 +/- 0.3).
  • 4C +21.35 was detected all week with a daily averaged flux between (0.8 +/- 0.3) and (1.8 +/- 0.3).
  • PKS 2326-502 was detected all week with a daily averaged flux between (0.8 +/- 0.2) and (2.0 +/- 0.6).
  • 3C 279 was detected all week with a daily averaged flux between (1.3 +/- 0.4) and (2.0 +/- 0.5).
  • PKS 0426-380 was detected all week with a daily averaged flux between (0.5 +/- 0.2) and (1.1 +/- 0.2).
  • Sporadic daily detections of blazars (fluxes below 1): Mkn 421, NGC 1275, PKS 0454–234, PKS 0426-380, B3 1343+451, PKS 0735+17, PKS B1424-418, S5 1044+71, 4C +28.07, S4 1144+40.

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

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Tuesday, December 31, 2013

Fermi LAT weekly report N. 289

Covered period: 2013.Dec.16 – 2013.Dec.22
LAT Mission week: 289.57 - 290.57
  • 3C 279 persisted in the high stated observed the previous week and reached a daily flux of  6× 10–6  on 2013 December 20 (ATel #5680). This is the highest flux observed by the LAT since the start of the Fermi mission. The day of the peak the source showed a daily hard photon index of 1.80 +/- 0.06.
  • PKS 1730–13 detected in flaring state: the blazar reached a daily averaged flux of  1 × 10–6 on 2013 December 21 and of 1.5 × 10–6 on 2013 December 22.
  • PKS 2326–502 was detected almost all week with daily flux above 2 × 10–6.
  • PKS 0426–380 was detected all week long (daily flux between 0.4 × 10–6 and 1.1 × 10–6).
  • PKS 1424–418 was detected almost all week with a daily flux ranging between 0.4 × 10–6 and 0.8 × 10–6.
  • 4C +21.35 was detected throughout the week and reached a peak flux = 1 × 10–6  on 2013 December 20.
  • Other blazars detected in some days of the week with a daily flux lower than 1 × 10–6 : PKS 1244-255, PMN J2345-1555, PKS 0454-234, VER 0521+211, S5 1044+71, Mrk 421, B3 1343+451, CTA 102, 4C +28.07, NGC 1275, B2 1520+31, PKS 2142-75, 4C +55.17, PKS 2023-07, PKS 0716+71, B2 2308+34.
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. Buson (sara.buson[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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Fermi LAT weekly report N. 288

Covered period: 2013.Dec.9 – 2013.Dec.15
LAT Mission week: 288.57 - 289.57
  • FERMI J0623-3351 was detected for the first time in gamma rays on 2013 December 14.  The source showed a flux of 0.1 × 10–6 and a particularly hard gamma-ray spectrum with a photon index of 1.9+/-0.1 (ATel #5668). Follow-up observations indicated that the gamma-ray source is probably associated with the blazar PMN J0623-3350 (ATel #5684).
  • 3C 279 was detected all week with daily flux above 1 × 10–6. The highest flux reached during this week was 3.2 × 10–6 and was observed on 2013 December 10.
  • PKS 2326–502 was detected all week; the highest daily flux of 2.1 × 10–6 was recorded on 2013 December 15.
  • PKS 1510-089 was detected all week with a daily flux ranging between 0.4 × 10–6 and 0.9 × 10–6.
  • PKS 0426–380 was detected all week long (daily flux between 0.1 × 10–6 and 0.6 × 10–6).
  • 4C +21.35 was detected throughout the week and reached a peak flux = 1 × 10–6  on 2013 December 11.
  • Other blazars detected in some days of the week with a daily flux lower than 1 × 10–6 : Mrk 421, PKS 1424–418, PKS 0454-234, S5 1044+71, PKS 0208–512, NGC 1275, B3 1343+451, CTA 102, PKS 1244-255, VER 0521+211, B2 1520+31, PKS 0524–485, PKS 2142-75, 4C +28.07.
Fluxes are in the unit of photons cm–2s–1 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. Buson (sara.buson[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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Friday, December 6, 2013

Fermi LAT weekly report N. 286

Covered period: 2013.Nov.24 - 2013.Dec.1
LAT Mission week: 286.57 - 287.57
  • PKS 2326-502 was detected all week with a daily averaged flux between 0.4 x 10-6 and 1.1 x 10-6.
  • 3C 279 was detected all week reaching a daily flux of 1.5 x 10-6 on November 26.
  • PKS 1424–41 was detected all week with a daily averaged flux below 1 x 10-6.
  • BL Lacertae was not in high-state in gamma rays despite It reached the historical maximum in optcial band (ATel #5597). It was detected twice with flux of 0.3 x 10-6 and 0.4 x 10-6 (November 25 and 27).
  • VER 0521+211 was detected few times during the week reaching a daily flux of 1.5 x 10-6 on November 30.
  • Fermi J1725-3726 (short high-energy galactic transient) was detected on December 1 with a flux of 1.3 x 10-5 in the time interval 11:22 - 11:27 UTC (ATel #5625).
  • Other blazars detected in some days of the week with a daily flux lower than about 1 x 10-6: NGC 1275, PKS 1454-354 , 4C +21.35 (PG 1222+216), Mrk 421, PKS 1510–08, 4C +01.02 (PKS 0106+01), B3 1343+451, 3C 454.3, B2 1520+31 and PKS 1244-255.

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.

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Wednesday, November 27, 2013

Fermi LAT weekly report N. 285

Covered period : 2013 November 18-24
LAT Mission week : 285.57 - 286.57
  • PKS 2326-502 was detected all week with a daily averaged flux between 0.7 x 10-6 and 1.2 x 10-6.
  • PKS 2032+107 was seen three times during the second part of the week with flux values around 0.8 x 10-6.
  • 4C +21.35 was detected during the first two days of the week with daily flux values respectively of 0.9x 10-6 and 0.8 x 10-6.
  • 4C +38.41 was detected during the second part of the week at about 0.8 x 10-6 on November 20 and at 0.5 x 10-6 on November 22.
  • BL Lacertae was detected twice with flux of 0.8 x 10-6 (November 21 and 22).
  • Other blazars detected in some days of the week with a daily flux lower than about 0.7 x 10-6: NGC 1275, PKS 0426–380, PKS 1244–255, PKS 1454–354, PKS 1510–08, B2 1520+31. The only exception was 3C 454.3 detected on November 18 with daily flux of 0.9 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:
- Elisa 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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Friday, November 22, 2013

Fermi LAT Weekly report N. 284

Covered period: 2013 November 11-17
LAT Mission week: 284.57 - 285.57
  • PKS 1510-08 in high state during the first part of the week and peaking on November 14 with daily flux 2.5E-6.
  • PKS 2326-502 in high state during the week and peaking on November 14 with daily flux 2E-6.
  • 3C 454.3 detected during the week with daily flux oscillating around a value of 1.2E-6.
  • CTA 102 is increasing during the last part of the week (daily flux about 1.3 on November 16 and 17).
  • 4C +21.35 (PG 1222+216) flaring at 1.2E-6. on November 15.
  • Other blazars detected in some days of the week with a daily flux lower than about 0.7E-6: Mkn 421,  Mkn 501, 3C 66A, NGC 1275, PKS 0454-234, PKS 0426-380, 4C +01.02 (PKS 0106+01, OC 012), 4C +47.44 (S4 1636+47), 4C +38.41 (B2 1633+38), B2 2319+31, BL Lacertae, S5 1044+71, PMN J2345-1555, PKS 0208-512 , PKS 1424-41.
  • High mass gamma-ray binary 1FGL J1018.6-5856> detected in high state with daily flux 2.4E-6 on November 11.

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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