Fermi LAT Weekly Report N. 227

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Covered period: 2012.October.8 - 2012.October.14
LAT Mission week: 227.57 - 228.57

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• NRAO 676 is in a flaring phase during the week reaching a daily flux of (2.8+/-0.4)X10^-6. See ATel #4486.
• 4C +38.41 is quite active during the week reaching a daily flux of (2.0+/-0.3)X10^-6 on October 8th.
• CTA 102 continues to be detected most of the week reaching the daily flux of (1.8+/-0.3)X10^-6 on October 8th.
• S4 0218+35 is detected most of the week reaching a flux of (3.2+/-0.4)X10^-6 on October 12th.
• PKS 1424--41 is quite active, it is detected all the days of the week spanning a flux between 0.8X10^-6 to 1.2X10^-6.
• S5 0716+71 is detected most of the week with a flux below 1X10^-6.
• PKS 2326-502, PKS 1244-255, 3C 279, Mrk 421, B3 1343+451 and OP 313 are sporadic detected in just one day of the week with a flux below 1X10^-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:
- 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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Fermi LAT Weekly Report N. 226

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Covered period: 2012.October.1 - 2012.October.7
LAT Mission week: 226.57 - 227.57

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• Gravitationally lensed blazar S4 0218+35 was detected on Oct. 1, 2, 3, 4, 6 with gradual fading. The daily flux was between (0.6+/-0.2)X10^-6 and (3.0+/-0.4)x10^-6.
• CTA 102 was still in high state. It was detected every day except Oct. 4. The daily flux was between (1.4+/-0.3)X10^-6 and (2.9+/-0.4)X10^-6.
• PKS B1424-418 was detected every day except Oct. 5. The daily flux was between (0.6+/-0.2)X10^-6 and (0.9+/-0.2)X10^-6.
• PKS 2326-502 was detected on Oct. 1, 2, 6, and 7, with a daily flux between (0.5+/-0.2)X10^-6 and (1.0+/-0.3)X10^-6.
• 4C +38.41 was detected on Oct. 2, 3, and 5, with a daily flux between (0.8+/-0.3)X10^-6 and (1.2+/-0.3)X10^-6.
• PKS 1244-255 was detected on Oct. 2 and 3 with a daily fluxes of (0.5+/-0.2)X10^-6 and (1.1+/-0.2)X10^-6, respectively.
• PKS 1510-08 was detected on Oct. 3 and 4 with a daily fluxes of (0.5+/-0.2)X10^-6 and (0.7+/-0.2)X10^-6, respectively.
• Sporadic daily detections of blazars (fluxes below 1.0X10^-6): S5 0716+71 and PKS 2155-304 (Oct. 1), S3 0827+24 (Oct. 2)

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:
- 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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Fermi LAT Weekly Report N. 225

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Covered period: 2012.September.24 - 2012.September.30
LAT Mission week: 225.57 - 226.57

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• Fermi LAT Target of Opportunity pointing observations for S3 0218+35 have been performed between 2012 September 24 and 30. S3 0218+35 detected quite bright all week, with a daily flux between (0.8±0.2) X 10^-6 and (2.1±0.1) X 10^-6.
• CTA 102 detected very bright all week, with fluxes higher than 2 X 10^-6 and reaching a daily flux of (6.2±1.4) X 10^-6 on 25 September.
• S5 0716+714 detected on 25, 26, 27, 28, and 30 September with a daily flux between (0.3±0.1) X 10^-6 and (0.5±0.1) X 10^-6.
• 4C +38.41 detected in high activity on 24 and 27 September, with a daily flux of (2.4±1.3) X 10^-6 and (1.5±0.6) X 10^-6, respectively.
• OJ 248 detected on 27 and 29 September, with a daily flux of (1.6±0.3) X 10^-6 and (0.4±0.2) X 10^-6, respectively.
• Sporadic activity (fluxes below 1 X 10^-6): NGC 1275 (27 and 28 September), 1H 1013+498 (28 September), Mrk 421 (28 and 29 September), GB6 J0102+4214 (30 September).

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:
- F. D'Ammando (filippo.dammando[at]fisica.unipg.it) and M. Orienti (orienti[at]ira.inaf.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. 224

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Covered period: 2012.September.17 - 2012.September.23
LAT Mission week: 224.57 - 225.57

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• The gravitationally lensed blazar S3 0218+35 detected in high activity on September 17, 19, 20, 21, and 22 with a daily flux between (4.5±0.5) X 10^-6 and (1.8±0.3) X 10^-6. Fermi LAT Target of Opportunity pointing observations are scheduled between 2012 September 24 and September 30 to detect the potential echo. See ATel#4411.
• PKS 0458-02 detected in flaring activity on September 17 with a daily flux (1.0±0.3) X 10^-6. See ATel#4396. Follow-up observations confirmed the high activity of the source in optical (see ATel#4402) and in X-rays (see ATel#4407).
• CTA 102 detected in high activity on September 17, 19, 20, 21, 22, and 23, with daily flux between (6.1±0.5) X 10^-6 and (0.9±0.3) X 10^-6. See ATel#4409.
• OJ 248 detected in flaring activity on September 23 with a daily flux (1.1±0.3) X 10^-6. See ATel#4421. The source was also detected on September 21, with a daily flux (0.4±0.2) X 10^-6.
• PKS 1424-41 detected on September 17, 20, 21, 22, and 23, with daily flux between (1.2±0.4) X 10^-6 and (0.6±0.2) X 10^-6.
• 4C +38.41 detected on September 17, 20, 21, 22, and 23, with daily flux between (1.7±0.3) X 10^-6 and (1.0±0.2) X 10^-6.
• Mkn 421 detected on September 19, 20, 21, 22, and 23, with daily flux between (0.5±0.2) X 10^-6 and (0.3±0.1) X 10^-6.
• PKS 2233-148 detected on September 19, 20, 21, and 22, with daily flux between (1.0±0.2) X 10^-6 and (0.4±0.1) X 10^-6.
• PKS 2326-502 detected on September 20, 21, and 23, with daily flux between (0.6±0.2) X 10^-6 and (0.3±0.1) X 10^-6.
• Sporadic daily detections of blazars (fluxes below 1 X 10^-6): PKS 0116-219 (September 17), B3 1343+451 (September 19, and 20), PKS 0244-470 (September 21), PKS 0250-225 (September 22, and 23), NGC 1275 (September 23).

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.

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Fermi LAT Weekly Report N. 223

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Covered period: 2012.September.10 - 2012.September.16
LAT Mission week: 223.57 - 224.57

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• The gravitationally lensed blazar S3 0218+35 had a daily flux of (1.0±0.2) X 10^-6 on Sep 10 before fading away and was not detected for three days. It brightened again and was strongly detected the last three days of the week with daily flux in the range (1.4 - 3.8) X 10^-6 with the peak on Sep 15. This blazar has been very active recently with an initial flare-up (ATel#4343) and a possible echo (ATel#4361) reported recently. This could represent a new flare and a Fermi TOO to observe another possible echo around Sep 25 is planned.
• 4C 38.41 brightened from (0.8±0.2) X 10^-6 on Sep 10 to (1.8±0.3) X 10^-6 on Sep 15 before declining to (1.1±0.2) X 10^-6 on September 16.
• Apart from a dip down to (0.3±0.1) X 10^-6 on Sep 11, S5 0716+71 stayed at about 1 X 10^-61e-6 for the first five days of this week but was not detected on the last two days.
• B3 1343+451 was detected on Sep 10 through Sep 15, with a daily flux between (0.5±0.1) X 10^-6 and (0.8±0.2) X 10^-6.
• PKS 1424-418 was detected on Sep 10, 12 and 16 with a daily flux of (0.9±0.3) X 10^-6, (1.0±0.4) X 10^-6 and (0.7±0.2) X 10^-6, respectively.
• Mkn 421 was detected on September 10, 12, and 16 with daily flux between (0.4±0.1) X 10^-6 and (0.6±0.2) X 10^-6.
• PKS 0116-219 was detected on Sep 12, 13, and 16 with daily flux between (0.5±0.1) X 10^-6 and (0.7±0.2) X 10^-6.
• Sporadic daily detections of blazars (fluxes below 1 X 10^-6 ): PKS 2326-502 (Sep 10, 12), PG 1553+113 (Sep 11), PKS 0250-225 (Sep 14), B2 0716+33 (Sep 13), PKS 2155-304 (Sep 15).

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:
- 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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Fermi LAT weekly report N. 222

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Covered period: 2012.September.03 - 2012.September.09
LAT Mission week: 222.57 - 223.57

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• The gravitationally lensed blazar S3 0218+35 re-brightened on September 3, with a daily flux of (1.0±0.2) X 10^-6, reaching its maximum on September 6, with a daily flux of (2.4±0.3) X 10^-6. This flaring activity possibly represents the gravitational lens time delayed counterpart of the previous flaring event that started on August 25. See ATel#4361. The source continued to be detected on September 7, and 9 with a daily flux of (1.0±0.2) X 10^-6 and (1.2±0.3) X 10^-6, respectively. See ATel#4371.
• Mkn 421 detected on September 3, 4, 5, 7, 8, and 9, with a daily flux between (0.2±0.1) X 10^-6 and (0.5±0.2) X 10^-6.
• B3 1343+451 detected on September 3, 4, 5, 6, 7, and 9, with a daily flux between (0.4±0.1) X 10^-6 and (0.9±0.2) X 10^-6.
• 4C 38.41 detected on September 3, 5, 7, and 8, with a daily flux between (0.5±0.2) X 10^-6 and (0.9±0.2) X 10^-6.
• S5 0716+714 detected on September 6, 7, 8, and 9, with a daily flux between (0.4±0.1) X 10^-6 and (1.1±0.2) X 10^-6.
• PKS 1124-186 detected on September 3, and 4, with a daily flux of (0.5±0.2) X 10^-6.
• PKS 2233-148 detected on September 6, and 9, with a daily flux of (0.5±0.2) X 10^-6 and (0.4±0.1) X 10^-6, respectively.
• Sporadic daily detections of blazars (fluxes below 1 X 10^-6 ): PKS 0250-225 (September 3), 1H 1013+498 (September 3), S4 0954+65 (September 4), PKS 2326-502 (September 7), PKS 1424-418 (September 9).

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. Giroletti (giroletti[at]ira.inaf.it) and M. Orienti (orienti[at]ira.inaf.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.221

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Covered period: 2012.Aug.27 - 2012.Sep.02
LAT Mission week: 221.57 - 222.57

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• Mkn 421 and B3 1343+451 were detected almost all week long with flux in the range 0.4-0.7 X 10-6 and 0.5-1.0 X 10-6, respectively.
• Four other sources were detected at least in 3 days of the week with some trend in brightness. The flux decreased from 2.1 to 0.5 X 10-6 for PKS 1510-08 and from 0.9 to 0.5 X 10-6 for PKS 2233-148. On the contrary, the flux increased from 0.4 to 0.7 X 10-6 for 4C +38.41 and from 0.6 to 0.9 X 10-6 for PKS B1424-418.
• Sporadic activity (fluxes above 1.0 X 10-6) was observed from S4 0218+35 (1.7 on Aug. 27) and 3C 273 (1.9 on Aug. 31).
• Sporadic activity (fluxes below 1.0 X 10-6) was observed from BL Lacertae (0.5 and 0.8 on Aug. 27 and 28), PKS 2326–502 (0.4 and 0.7 on Aug. 28 and 30), PKS 0250-225 (0.4 on Aug. 30), PKS 0405-385 (0.4 on Aug. 31), PKS 0537-441 (0.2 on Sep. 02), B2 0716+33 (0.3 on Sep. 01), and 1H 1013+498 (0.1 on Sep. 01).

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. Donato (donato[at]milkyway.gsfc.nasa.gov) for generic information related to this week
- Contact persons on this page for individual sources cited above.

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