Monday, October 21, 2013

Fermi LAT Weekly report N. 279

Covered period: 2013 October 7-13
LAT Mission week: 279.57 - 279.57
  • The BL Lac object 1ES 2322-409 (z=0.17359, 2FGL J2324.7-4042) detected in flaring state in the days from October 7 to October 10 (see ATel#5457).  The source reached its historical maximum on October 8 with daily flux of 1.5E-6. Another AGN (candidate FSRQ) PKS 2325-408 ( 2FGL J2327.9-4037) can be also a possible association for the LAT flaring source. It is located at about a half degree from 1ES 2322-409.
  • PKS 1510-08 in high active state during the week and peaking on October 13 with daily flux 3.7E-6.
  • 4C +21.35 (PG 1222+21) and 4C +38.41 (B2 1633+38) both in high state during the week with daily flux between about 1.2E-6 and 2E-6.
  • PKS 2326-502 flaring during the week peaking on October 10 with daily flux 1.6E-6.   
  • 3C 454.3 detected during the week with daily flux oscillating around a value of 1.2E-6.
  • NGC 1275 (Perseus A) detected some days of the week peaking on October 9 with daily flux 1.2E-6. 
  • 4C +01.02 (PKS 0106+01) detected on October 9 and 12 with a daily flux level of about 1E-6.
  • BL Lacertae detected on October 12 with a daily flux level of 1E-6.  
  • Other blazars of the week: PKS 0426-380, CTA 102, PKS 0454-234, 3C 279, PKS 1424-41, S4 1849+67, Mkn 421, PKS 2142-75, PMN J2145-3357, PMN J2345-1555, PKS 1622-253, 4C +55.17 (OK 591, S4 0954+55), B2 2308+34.

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, October 9, 2013

Fermi LAT Weekly Report N. 278

Covered period: 2013.Sep.30 - 2013.Oct.06
LAT Mission week: 278.57 - 279.57
  • A bright flare from the FSRQ PKS 1622-253 was detected on October 6 with a daily averaged flux of (3.0 +/- 0.3) which is 22 times its daily averaged flux from the 2FGL catalog (see ATel #5452).
  • PKS 1510-08 was detected all week with a daily averaged flux between (1.9 +/- 0.3) and (2.7 +/- 0.4).
  • 4C +38.41 was detected all week with a daily averaged flux between (1.3 +/- 0.3) and (1.7 +/- 0.3).
  • 3C 454.3 was detected all week with a daily averaged flux between (0.7 +/- 0.2) and (2.1 +/- 0.4).
  • 4C +21.35 was detected all week with a daily averaged flux between (0.5 +/- 0.2) and (1.7 +/- 0.4).
  • PKS 2326-502 was detected all week with a daily averaged flux between (1.2 +/- 0.2) and (2.2 +/- 0.3).
  • Sporadic daily detections of blazars (fluxes below 1): Mkn 421, NGC 1275, PKS B1424-418, S5 1217+71, PKS 0426-380, PKS 0454–234, S4 0218+35, S5 1044+71, S5 1217+71, PMN J2145-3357, PKS 1424+240.

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:
- B. Carpenter (carpbr01[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, October 8, 2013

Fermi LAT Weekly report N. 277

Covered period: 2013 September 23-29
LAT Mission week: 277.57 - 278.57
  • 3C 454.3 in flaring state. The source reached a daily peak flux of about 3.4E-6 on September 24 decreasing to a level of about 1.5E-6 the following days of the week. 
  • 4C +21.35 (PG 1222+21) flaring with daily flux level of about 2.3E-6 on September 29.
  • PKS 1510-08 in high state at the beginning of the week (daily flux about 2.8E-6 on September 23).
  • Rapid flare of BL Lacertae detected with daily flux about 1.4E-6 on September 25.
  • Further bright blazars of the week, showing daily flux in the range 1.0-1.5E-6 are: NRAO 676 (on September 23),  4C +38.41 (B2 1633+38),  PKS 2326-502, and PKS 0426-380.
  • Other blazars of the week: NGC 1275 (Per A), PKS 0454-234, S4 1849+67, S5 1044+71, Mkn 421,  Mkn 501, PKS 2155-304, PKS 1424-41, 3C 279, PMN J2145-3357.
  • Gamma-ray high-mass binary star 1FGL J1018.6-5856 detected with daily flux 1.8E.6 on September 28.

    
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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Monday, September 30, 2013

Fermi LAT Weekly Report N. 276

Covered period: 2013.Sep.16 - 2013.Sep.22
LAT Mission week: 276.57 - 277.57
  • PKS 1510-089 dominated the gamma-ray sky this week with daily fluxes in the range (1.5 - 6.4).  A Swift ToO was triggered and the observed fluxes indicate that this blazar was also flaring in the X-ray band (see http://www.swift.psu.edu/monitoring/source.php?source=PKS1510-089 for more information). We thank the Swift team for their support.
  • 3C 454.3, 4C +38.41 and PKS 0454-234 also deserve notable mention, with recurrent daily detections and fluxes above 1.
  • Other sources detected several days of the week (with fluxes below 1): Mkn 421, 3C 279, PKS 0426-380, NGC 1275, PKS 2326-502
  • Sporadic activity (detected only one or two days,  fluxes below 1): 4C +21.35, PKS 1424-418, PKS 0250-225, PKS 2155-304 , CTA 102,  4C +55.17.

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:

- L. Reyes (lreyes04[at]calpoly.edu) for generic information related to this week

- Contact persons on this page for individual sources cited above.
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Monday, September 23, 2013

Fermi LAT Weekly Report N. 275

Covered period: 2013.Sep.09 - 2013.Sep.15
LAT Mission week: 275.57 - 276.57
  • A bright flare has been detected from 4C +01.02  on 2013 September 14 and reported in ATel #5394.
  • 4C +38.41 observed most days of the week with a daily flux above 1.
  • PKS 1510–08 has been strongly detected all week reaching a peak daily average flux of (2.1 +/- 0.6) on September 12.
  • Sources detected most days of the week with a daily average flux 
  • between 0.2 and 1.2 are: PKS 0454-234, NGC 1275, PKS 2326–502, Mkn 421.
  • PKS 1424–418, S4 1144+40, PKS 1222+216, PKS 0426-380.
  • Sporadic activity observed from the blazars NRAO 190, 3C 454.3, B3 1343+451, B3 0227+403 and PKS 1424+240.
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:

- S. Buson (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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Thursday, September 12, 2013

Fermi LAT Weekly Report N. 274

Covered period: 2013.Sep.02 - 2013.Sep.08
LAT Mission week: 274.57 - 275.57
  • The quasar 4C+21.35 (PKS 1222+21) was strongly detected from September 2 through September 6 reaching a peak daily averaged flux of (4.1 +/- 0.5) on September 4. Its activity triggered a GCN Notice. This is the strongest flare from this source since a period of activity ending June 2010.
  • PKS 1510-08 was detected on September 4, 5, 7 and 8 with a daily averaged flux between (1.8 +/- 0.5) and (3.7 +/- 0.7).
  • 4C +38.41 (B2 1633+38) was detected on September, 3, 4, 5, 6, and 8 with a daily averaged flux between (0.7 +/- 0.2) and (1.3 +/- 0.2).
  • PKS 2326-502 was detected on September 4 and 7 with a daily averaged flux of (1.1 +/- 0.3) and (0.8 +/- 0.2) respectively.
  • 3C 454.3 was detected on September 5 and 8 with a daily averaged flux of (0.6 +/- 0.2) and (1.0 +/- 0.3) respectively.
  • Sporadic daily detections of blazars (fluxes below 1X10-6): PKS 1424-41, NGC 1275, Mrk 421, PKS 0454-234, PKS 0426-380.

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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Wednesday, September 4, 2013

Fermi LAT Weekly Report N. 273

Covered period: 2013.Aug.26 - 2013.Sep.01
LAT Mission week: 273.57 - 274.57
  • A bright flare from the narrow-line Seyfert galaxy 1H 0323+342 was detected for the first time on August 28 with a daily averaged flux of (1.0 +/- 0.3) which is 29 times its daily averaged flux from the 2FGL catalog (see ATel #5344). It peaked on August 30 with a daily averaged flux of (2.0 +/- 0.4) which is 56 times the 2FGL flux.
  • PKS 1510-08 was detected all week with a daily averaged flux between (1.4 +/- 0.4) and (2.2 +/- 0.5).
  • 4C +38.41 was detected all week with a daily averaged flux between (1.2 +/- 0.3) and (2.2 +/- 0.4).
  • 3C 454.3 was detected all week with a daily averaged flux between (0.6 +/- 0.2) and (1.3 +/- 0.4).
  • Sporadic daily detections of blazars (fluxes below 1X10-6): Mkn 421, NGC 1275, PKS B1424-418, PKS 2155-304, PKS 0426-380.

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:
- B. Carpenter (carpbr01[at]gmail.com) for generic information related to this week
- Contact persons on this page for individual sources cited above.

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