Fermi Gamma-Ray Sky

Wednesday, October 12, 2016

Fermi LAT weekly report N. 434

Covered period: 2016 September 26 - Ocotber 2
LAT Mission week: 434.57-435.57

Crab nebula flare with peak daily flux (4.8 ± 0.5) on Sep 30 ; reported in ATel#9588
B2 0748+33 peak daily flux = (0.8 ± 0.2) on Oct 2 ; reported in ATel#9590
Nova Lupi 2016 (ASASSN-16kt) sky-survey and ToO observations ; reported in ATel#9594
4C +01.02 peak daily flux = (1.0 ± 0.2)
Gravitational lens B0218+357 peak daily flux = (0.7 ± 0.2)
PMN J0422–0643 peak daily flux = (0.4 ± 0.1)
PKS 0426–380 peak daily flux = (1.0 ± 0.1)
PKS 0447–439 peak daily flux = (0.5 ± 0.1)
PKS 0524–485 peak daily flux = (0.4 ± 0.1)
S5 0716+71 peak daily flux = (0.3 ± 0.1)
S5 1044+71 peak daily flux = (0.5 ± 0.1)
PKS 1424–41 peak daily flux = (0.6 ± 0.1)
PKS 1502+106 peak daily flux = (0.6 ± 0.1)
PKS 1510–08 peak daily flux = (1.1 ± 0.2)
4C +38.41 peak daily flux = (0.6 ± 0.1)
PKS 2155–304 peak daily flux = (0.3 ± 0.1)
TXS 2241+406 peak daily flux = (0.4 ± 0.1)
PKS 2247-131 peak daily flux = (1.1 ± 0.3) ; see July 2016 flare: ATel#9285
BL Lacertae peak daily flux = (0.5 ± 0.1)
CTA 102 peak daily flux = (2.6 ± 0.4)
3C 454.3 peak daily flux = (1.5 ± 0.3)

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:
- C.C. Cheung (Teddy.Cheung [at] nrl.navy.mil) for generic information related to this week
- Contact persons on this page for individual sources cited above.

Tuesday, October 11, 2016

Fermi LAT Weekly report N. 430

Covered period: 2016 August 29 - September 4
LAT Mission week: 430.57-431.57

Flare of the GeV-TeV BL Lac object AP Librae with daily flux 1.1e-6 and peak 6h flux 2.5e-6 on Aug.30. More details in ATel#9442.
Outburst of PKS 1510-08 with daily flux peaking at 5.3e-6 on Sept.3.
Flare of blazar MG2 J201534+3710 with daily flux 1.6e-6 on Aug.30.
PKS 1824-582 detected almost all week with daily fluxes above 0.7e-6 and peaking on Sept. 3 with daily flux 1.3e-6.
CTA 102 detected all week in high state with daily fluxes between about 2.4e-6 and 3.2e-6.
3C 454.3 detected all week with daily fluxes between about 1.8e-6 and 3.5e-6.
Increased activity of Cen A detected on Sep.1 with daily flux 0.8e-6.
4C +01.02 (PKS 0106+01) detected all week with daily fluxes between about 0.7e-6 and 1.3e-6.
S5 1044+71 detected all week with daily fluxes between about 0.6e-6 and 0.8e-6.
PKS 0502+049 detected all week with daily fluxes between about 0.6e-6 and 0.8e-6.
BL Lac object 3C 371 detected at 0.2e-6 on Aug.30.
Possible hard state of the BL Lac object TXS 1055+567 (7C 1055+5644, GB6 J1058+5628, z=0.1433) detected on Sept. 1 with daily flux 0.06e-6 and ph.index 1.5.
Other blazars of the week detected, also sporadically, around or below 0.5e-6:
PG 1553+113 and 3C 66A (both in possible hard state with flux about 0.1e-6 and photon index about 1.5), MG1 J021114+1051, PKS 2155-304, PKS 1424-41, PKS 1502+106, PKS 2052-47, 1ES 1215+303 (or PG 1218+304), NGC 1275, gravitationally lensed blazar S3 0218+35 (lens B0218+357), 4C +55.17, 1ES 1959+650, PKS 0002-478, S4 1849+67, BL Lac, PKS 0426-380, PKS 0402-362, TXS 2241+406, S4 0110+49.
Enhanced activity of the microquasar Cyg X-3 being detected during some days of the week.
Quiet Sun and the Moon detected in a few 6h intervals of the week.

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.

Saturday, August 27, 2016

Fermi LAT weekly report N. 428

Covered period: 2016.Aug.15 - 2016.Aug.21
LAT Mission week: 428.57 - 428.57

3C 454.3 detected all week with daily flux between (2.3 ± 0.3) and (3.9 ± 0.4)
CTA 102 detected all week with daily flux between (1.2 ± 0.2) and (3.1 ± 0.4)
4C +01.02 detected all week with daily flux between (1.0 ± 0.2) and (2.2 ± 0.2)
Preliminary unassociated detection LAT ASP J043240-040033 (flux: (0.5 ± 0.1) e-6) most likely is consistent with an afterglow of MAXI GRB 151212A that seems to has faded since the last observation reported in GCN 18687.
Fermi LAT ATel#9378 issued on 2016.Aug.16
Sporadic activity (fluxes below 1): S5 1044+71, PKS 0426–380, PKS B1424–418, B2 1520+31, PKS 2245–328, PKS 0202–17, PKS 0208–512, MG1 J021114+1051, PKS 1510–08, AO 0235+164, 4C +55.17

Fluxes are in the unit of photons/cm^2/s above 100 MeV.

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:
- M.Kreter (mkreter[at]astro.uni-wuerzburg.de) for generic information related to this week
- Contact persons on this page for individual sources cited above.

Wednesday, August 24, 2016

Fermi LAT Weekly Report N. 427

Covered period: 2016.Aug.08 - 2016.Aug.14
LAT Mission week: 427.57 - 428.57

4C +01.02 was detected all week with daily averaged fluxes between (1.1 +/- 0.2) and (1.7 +/- 0.2).
3C 454.3 was detected all week with daily averaged fluxes between (2.1 +/- 0.3) and (2.4 +/- 0.3).
PKS 1510-08 was detected Aug. 9, 10 and 11 with daily averaged fluxes of (2.0 +/- 0.3), (2.1 +/- 0.4) and (1.3 +/- 0.3), respectively.
S5 1044+71 was detected all week with daily averaged fluxes between (0.7 +/- 0.2) and (1.4 +/- 0.2).
CTA 102 was detected Aug. 10, 11, 14 with a daily averaged flux of (0.8 +/- 0.2), (0.8 +/- 0.2) and (1.2 +/- 0.2), respectively.
New gamma-ray transient Fermi J0751-5136 was detected in the week of 18 July through 25 July, 2016. See ATel #9340
Sporadic daily detections of blazars (fluxes below 1): PKS 0426-380, PKS 0346-27, AO 0235+164, PKS B1424-418, PKS 2155-304, Mkn 421, PKS 0454-234, 1ES 1959+650, PKS 0447-439, PKS 0521-36.

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.

Fermi LAT Weekly Report N. 426

Covered period: 2016.Aug.01 - 2016.Aug.07
LAT Mission week: 426.57 - 427.57

3C 454.3 was detected Aug 1, 2, 6 and 7 with daily averaged fluxes between (1.4 +/- 0.4) and (4.7 +/- 1.2).
4C +01.02 was detected all week with daily averaged fluxes between (1.1 +/- 0.2) and (2.0 +/- 0.2).
PKS 0502+049 was detected Aug. 1, 4 and 7 with daily averaged fluxes of (1.0 +/- 0.2), (0.3 +/- 0.1) and (0.3 +/- 0.1), respectively.
PKS 0507+17 was detected Aug. 1 with a daily averaged flux of (1.0 +/- 0.2).
Fermi LAT made no significant gamma-ray excess associated with IceCube event 160731. See ATel #9303
TOO observations of PSR J1119-6127 were in progress all week.
Sporadic daily detections of blazars (fluxes below 1): PKS 0454-234, PKS 1610-77, AO 0235+164, PKS 0426-380, GB6 J1037+5711, PKS 0346-27, PKS B1424-418, PKS 2155-304, PKS 0116-219, PKS 0521-36.

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.

Thursday, July 28, 2016

Fermi LAT Weekly report N. 424

Covered period: 2016.Jul.18 - 2016.Jul.24
LAT Mission week: 424.57 - 425.57

OT 081 continued its activity during all week, reaching the highest flux reported by the LAT of (4.3±0.2) on 20 July. For details on the joint wavelength observation see ATel#9260 (see also ATel#9267 and ATel#9259).
CTA 102 detected all week with daily flux between (1.5±0.2) and (2.2±0.5).
4C +01.02 detected all week with daily flux between (0.8±0.1) and (1.2±0.2).
3C 454.3 detected all week with daily flux between (1.4±0.2) and (4.2±0.7).
Sporadic activity (fluxes below 1): PKS B1424-418, S5 1044+71, TXS 2241+406, PKS 1510-08, PKS 0208-512, PKS 0454-234, NRAO 512, S4 1030+61, PG 1553+113, PMN J1332-1256, PKS 0426-380, PKS 0727-11, Ton 599, S5 0716+71, 4C +01.28, PKS 1256-220, Mrk 421, NGC 1275, PKS 1502+106, PKS 1610-77, PKS 0537-441, 4C +48.41, VER 0521+211.

Fluxes are in the unit of 10^-6photons/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:
- G. Pivato (giovanna.pivato@pi.infn.it) for generic information related to this week
- Contact persons on this page for individual sources cited above.

Wednesday, July 20, 2016

Fermi LAT Weekly report N. 423

Covered period: 2016 June 11-17
LAT Mission week: 423.57-424.57

Record outburst of OT 081 (4C +09.57, PKS 1749+096) detected on July 16 with daily flux 3.9e-6 (70 times the 3FGL catalog averaged flux) and with 6-hour interval peak flux of 7.0e-6. Daily flux 2.4e-6 on July 17.
Flare of 4C +01.02 (PKS 0106+01) detected on July 14 with daily flux 2.3e-6 (18 times the 3FGL catalog averaged flux). It is detected in high state (>1.5e-6) in the other days of the week.
First strong flare of PKS 0403-13 (z=0.571) detected on July 11 with daily flux 1.6e-6 (140 times the 3FGL catalog averaged flux). Daily flux 1.3e-6 on July 12 (see ATel#9242 for more details).
TeV blazar 1ES 1959+650 active during the week, peaking on July 12 with daily flux 0.5e-6.
PKS 1256-220 detected all week. Flaring activity is observed on July 12 with daily flux 0.8e-6 (24 times the 3FGL catalog averaged flux).
3C 454.3 with daily fluxes between about 1.7e-6 (on July 16) and 3.8e-6 (on July 11).
CTA 102 with daily fluxes between about 0.7e-6 and 1.5e-6.
PKS 0502+049 in high state with daily fluxes between about 0.7e-6 and 0.9e-6.
PKS 0426-380 with daily fluxes between about 0.5e-6 and 0.9e-6.
Gravitational lens B0218+357 (S3 0218+35) detected on July 12 at 0.3e-6.
Preliminary unassociated detection ASP J132608-054322 on July 12. The candidate gamma-ray blazar PKS B1324-047 (TXS 1324-047, CGRaBS/CRATES/BZcat catalog source, z=1.8820) is within 1 degree of the gamma-ray position.
PKS 0454-234, AO 0235+164, S5 1044+71, PKS 1510-08, PKS 1424-41, PKS 0208-512 all detected sporadically during the week with with daily fluxes between about 0.5e-6 and 0.8e-6.
Other blazars of the week detected, also sporadically, around or below 0.5e-6: BL Lac, NGC 1275, Mkn 421, PKS 2023-07, PKS 2052-47, 3C 279, PG 1553+113, TXS 2241+406, TXS 2358+209, PKS 1335-127 , VER 0521+211, OX 169, PKS 0301-243, 4C +55.17 (S4 0954+55), PKS 2155-304, 3C 66A, S4 1749+70, OJ 287, PMN J1332-1256, AP Lib.

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.