Fermi LAT Weekly Report N. 54

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Covered period: 2009.June.8 - 2009.June.14

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• Fermi LAT detected a new Gamma-ray transient in the Galactic Plane: J1057-6027 on June 11th, with the daily flux of (2.4 +/- 0.7)e-6 ph cm-2 s-1. (see ATel #2081).
  The source was not detected on following days.
  


• PKS 1510-089 remains in the 1e-6 to 3e-6 daily flux range.


• PKS 1502+106 shows a steady trend with daily fluxes around 1e-6 ph/cm^2/s.

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:

- H. Yasuda (yasuda[at]hep01.hepl.hiroshima-u.ac.jp) for generic information related to this week

- source contact persons on this page for individual objects.

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Fermi LAT Weekly Report N. 52

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Covered period: 2009.May.25 - 2009.May.31

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• Candidate blazar 4C31.03 (see ATel #2054) seen in day timescales with flux levels reaching 0.8e-6 ph/cm^2/s.
  
  
• PKS 1510-089 remains in the 1e-6 to 2e-6 daily flux range (>100MeV)
  
  
• PKS 1502+106 shows a steady trend with daily fluxes (>100MeV) around 1e-6 ph/cm^2/s.
  
  
• 3C 454.3 showed consistent daily flux levels (>100MeV) just below 1e-6 ph/cm^2/s.
  
  
• S5 0716+714 showed a weekly flux (>100MeV) of 0.3E-6 ph/cm^2/s.
  
  
• Mrk 421 showed consistent daily flux levels (>100MeV) around 0.3e-6 ph/cm^2/s.
  
  
• 3C 273 returns after a low state period, with several daily detections, the highest flux (>100MeV) reaching just above 1e-6 ph/cm^2/s.
  
  
• 3C 279 decreases its activity with a weekly flux (>100MeV) of 0.4e-6 ph/cm^2/s.
  
  
• PKS 2155-304 is active this week with several daily detections at flux (>100MeV) of 0.5e-6 ph/cm^2/s.
  
  
• 3C 66A detected with weekly flux (>100MeV) of 0.4e-6 ph/cm^2/s.
  
  
• PKS 0537-441 (see ATel #1759) detected with weekly flux (>100MeV) of 0.4e-6 ph/cm^2/s.
  
  
• PKS 0454-234 (see ATel #1898) appeared once with daily flux (>100MeV) of 0.6e-6 ph/cm^2/s.
  
  
• 0917+449 (see ATel #1902) appeared in two daily runs with flux (>100MeV) of 0.3e-6 and 0.4e-6 ph/cm^2/s respectively.
  
  
• PKS 0727-115 (see ATel #1919) appeared during the week with flux (>100MeV) of 0.3e-6 ph/cm^2/s.
  
  
• PKS 0250-225 (see ATel #1933) appeared with daily flux (>100MeV) of 0.2e-6 ph/cm^2/s.
  
  
• B2 1520+31 (see ATel #2026) appeared on several days reaching a flux (>100MeV) of 0.5e-6 ph/cm^2/s.
  
  
• PKS 0805-07 (see ATel #2048) detected with a daily flux (>100MeV) of 0.2e-6 ph/cm^2/s.
  
  
• PKS 0440-00 (see ATel #2049) decreases to a weekly flux (>100MeV) of 0.3e-6 ph/cm^2/s.
  
  
• LSI +61 303 still bright and detected in some days of this week.
  
  

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:
W. McConville (wmcconvi[at]umd.edu) for generic information related to this week;
- for PKS 1510-089 the LAT contact person is A. Tramacere (tramacer[at]slac.stanford.edu);
- for PKS 1502+106 the LAT contact person is S. Ciprini (stefano.ciprini[at]pg.infn.it);
- for 3C 454.3 the LAT contact people are B. Lott (lott[at]cenbg.in2p3.fr) and G. Madejski (madejski[at]slac.stanford.edu););
- for Mrk 421 the LAT contact people are V. Lonjou (vincent.lonjou[at]cesr.fr) and D. Paneque (dpaneque[at]slac.stanford.edu););
- for 3C 273 the LAT contact people are J. Chiang (jchiang[at]slac.stanford.edu) and W. Collmar (wec[at]mpe.mpg.de););
- for 3C 279 the LAT contact people are Greg Madejski (madejski[at]slac.stanford.edu) and Werner Collmar (wec[at]mpe.mpg.de);
- for PKS 2155-304 the LAT contact person is B. Giebels (berrie[at]llr.in2p3.fr););
- for 3C 66A the LAT contact person is L. Reyes (lreyes[at]kicp.uchicago.edu););
- for PKS 0537-441 the LAT contact person is G. Tosti (tosti[at]pg.infn.it););
- for PKS 0454-234 the LAT contact person is D. Gasparrini (dario.gasparrini[at]asdc.asi.it););
- for 0917+449 the LAT contact person is W. McConville (wmcconvi[at]umd.edu););
- for PKS 0727-115 the LAT contact person is A. Tramacere (tramacer[at]slac.stanford.edu););
- for 0250-225 the LAT contact person is W. McConville (wmcconvi[at]umd.edu););
- for B2 1520+31 the LAT contact person is D. Gasparrini (dario.gasparrini[at]asdc.asi.it););
- for PKS 0805-07 the LAT contact person is S. Ciprini (stefano.ciprini[at]pg.infn.it););
- for PKS 0440-00 the LAT contact people are S. Ciprini (stefano.ciprini[at]pg.infn.it) and F. Longo (francesco.longo[at]ts.infn.it);
- for LSI +61 303 the LAT contact person is R. Dubois (richard[at]slac.stanford.edu);

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Fermi LAT weekly report N. 51

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Covered period: 2009.May.18 - 2009.May.24

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• Fermi LAT detection of recent activity in a source positionally consistent with the candidate blazar 4C31.03 (see ATel #2054).
  
  
• PKS 1510-089 and PKS 1502+106 are the brightest blazars with fluxes (>100 MeV) always above 1e-6 ph/cm^2/s and exceeding 2e-6 ph/cm^2/s on one day of this week.
  
  
• 3C 454.3 reached a flux (>100MeV) greater than 3e-6 ph/cm^2/s but only one day. The rest of the week it has been around 1e-6 ph/cm^2/s.
  
  
• S5 0716+714 showed up with a daily flux (>100MeV) of 0.7e-6 ph/cm^2/s.
  
  
• PKS 0440-00 continues its activity with the highest weekly flux since Fermi launch and one daily flux (>100MeV) of 1.9e-6 ph/cm^2/s.
  
  
• 3C 279 brightens up after a low state period, with fluxes (>100MeV) above 1e-6 ph/cm^2/s.
  
  
• LSI +61 303 bright and detected in some days of this week.
  
  

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:
E. Cavazzuti (elisabetta.cavazzuti[at]asdc.asi.it) for generic information related to this week;
- for PKS 1510-089 the LAT contact person is A. Tramacere (tramacer[at]slac.stanford.edu);
- for PKS 1502+106 the LAT contact person is S. Ciprini (stefano.ciprini[at]pg.infn.it);
- for 3C 454.3 the LAT contact people are B. Lott (lott[at]cenbg.in2p3.fr) and G. Madejski (madejski[at]slac.stanford.edu););
- for PKS 0440-00 the LAT contact people are S. Ciprini (stefano.ciprini[at]pg.infn.it) and F. Longo (francesco.longo[at]ts.infn.it);
- for 3C 279 the LAT contact people are Greg Madejski (madejski[at]slac.stanford.edu) and Werner Collmar (wec[at]mpe.mpg.de);
- for LSI +61 303 the LAT contact person is R. Dubois (richard[at]slac.stanford.edu);

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Fermi LAT weekly report no. 50

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Covered period: 2009.May.11 - 2009.May.17

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• Fermi LAT detection of recent activity in a source positionally consistent with the blazar PKS 0805-07 (see ATel #2048).


• Fermi LAT detection of a GeV flare in a source positionally consistent with blazar NRAO 190 (PKS 0440-00). (see ATel #2049).


• 3C 66A is active (with a flux (>100 MeV) around or above above 1e-6 ph/cm^2/s) during the whole week.


• PKS 1510-089 is the brightest blazar (flux (>100 MeV) exceeded 2e-6 ph/cm^2/s on several days of this week).


• PKS 1502+106 is fluctuating around a flux (>100 MeV) of 1e-6 ph/cm^2/s.


• 3C 454.3 is quieter, but reached the level of 1.5e-6 ph/cm^2/s at the end of the week.


• PKS 2155-304 is detected sometimes with daily flux (>100 MeV) around 0.3e-6 ph/cm^2/s.


• LSI +61 303 bright and detected in most days of this week.

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]pg.infn.it) for generic information related to this week;
- for PKS 1510-089 the LAT contact person is A. Tramacere (tramacer[at]slac.stanford.edu);
- for PKS 1502+106 the LAT contact person is S. Ciprini (stefano.ciprini[at]pg.infn.it);
- for 3C 66A the LAT contact person is L. C. Reyes (lreyes[at]kicp.uchicago.edu);
- for 3C 454.3 the LAT contact persons are B. Lott (lott[at]cenbg.in2p3.fr) and G. Madejski (madejski[at]slac.stanford.edu);)
- for PKS 2155-304 the LAT contact persons are B. Giebels (berrie[at]llr.in2p3.fr) and J. Chiang (jchiang[at]slac.stanford.edu);
- for LSI +61 303 the LAT contact person is R. Dubois (richard[at]slac.stanford.edu).

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Fermi LAT weekly report no. 49

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** Covered period : 2009/05/04 - 2009/05/10 **
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Highlights:

• PKS 1510-089 stays fairly constant all week with a flux (>100 MeV) between 1.8-3.2 e-6 ph/cm^2/s.
  
• 3C273 is detected at the end of the week with a flux (>100 MeV) of 1.64+/-0.5e-6 ph/cm^2/s in the daily time scale.
  
• PKS 1502+106 is fairly constant through the week with a flux of ~1.8e-6 ph/cm^2/s in the daily time scale.
  
• 3C454.3 is quieter this week only reaching flux (>100 MeV) of 0.52+/-0.15e-6 ph/cm^2/s.
  
• PKS 2155-304 was detected towards the middle of the week with a flux (>100 MeV) of 0.22+/-0.09e-6 ph/cm^2/s on May 6th.
  
• 3C66AB was detected reaching a flux (>100 MeV) of 0.64+/-0.17e-6 ph/cm^2/s on May 5th.
  
• LSI+61 303 is detected in most days.
  

Note. All the flux reported above are by the ASP analysis and should be considered preliminary and cannot be used for publication, however they are indicative of the flux range and the current status of a source.
Please acknowledge the LAT team if you use information from this report.

For questions and comments please contact:
A. Hill (adam.hill[at]obs.ujf-grenoble.fr) for generic information related to this week;

for PKS 1510-089 the LAT contact person is A. Tramacere (tramacer[at]slac.stanford.edu);
for PKS 1502+106 the LAT contact person is S. Ciprini (stefano.ciprini[at]pg.infn.it);

Fermi LAT weekly report no. 48

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** Covered period : 2009/04/27 - 2009/05/03 **
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Highlights:

• PKS 1510-089 seems to fade after the strong flare on past Sunday, halving its flux during the week.
  
• 3C273 continues its increasing trend (~2 times past week) with a flux of 1.4+/-0.1e-6 ph/cm^2/s in the weekly time scale.
  
• PKS 1502+106 continues its high activity period reaching a flux of 2.4+/-0.7e-6 ph/cm^2/s in the daily time scale.
  
• 3C454.3 is quite bright in the end of the week reaching flux of 1.9+/-0.3e-6 ph/cm^2/s.
  
• PKS 2155-304 was quite active in the fist half of the week with a flux of 0.5+/-0.1e-6 ph/cm^2/s on April 28th.
  
• LSI+61 303 is detected most days.

All the reported fluxes are above 100 MeV.
Note. All the flux reported above are by the ASP analysis and should be considered preliminary and cannot be used for publication, however they are indicative of the flux range and the current status of a source.
Please acknowledge the LAT team if you use information from this report.

For questions and comments please contact:
D. Gasparrini (dario.gasparrini[at]asdc.asi.it) and F. Longo (francesco.longo[at]ts.infn.it) for generic information related to this week;

for PKS 1510-089 the LAT contact person is A. Tramacere (tramacer[at]slac.stanford.edu);
for PKS 1502+106 the LAT contact person is S. Ciprini (stefano.ciprini[at]pg.infn.it);

Fermi LAT weekly report no. 47

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** Covered period : 2009/04/20 - 2009/04/26 **
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Highlights:

• PKS 1510-089 was very strong during this week, it shows a flux higher than 12 times the average flux of previous months. Atel #2033 was issued.
  
• 3C273 was quite bright and it was detected in almost days reaching flux of 2.1+/-0.5e-6 ph/cm^2/s.
  
• PKS 1502+106 still bright reaching a flux of 2.0+/-0.4e-6 ph/cm^2/s in the daily time scale.
  
• 3C454.3 was quite bright and it was detected in almost days reaching flux of 1.9+/-0.4e-6 ph/cm^2/s.
  
• B2 1502+31 high activity state, it was reaching flux of 1.9+/-0.7e-6 ph/cm^2/s. Atel #2026 was issued.

Note. All the flux reported above are by the ASP analysis and should be considered preliminary and cannot be used for publication, however they are indicative of the flux range and the current status of a source.
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;
for PKS 1510-089 the LAT contact person is A. Tramacere (tramacer[at]slac.stanford.edu);
for PKS 1502+106 the LAT contact person is S. Ciprini (stefano.ciprini[at]pg.infn.it);
for B2 1502+31 the LAT contact person is D. Gasparrini (dario.gasparrini[at]asdc.asi.it)