Fermi Gamma-Ray Sky

Friday, January 29, 2016

Fermi LAT Weekly report N. 398

Covered period: 2016.Jan.18 - 2016.Jan.24
LAT Mission week: 398.57 - 399.57

Increasing gamma-ray flux from a source positionally consistent with the microquasar Cygnus X-3, with the most significant detection on Jan 21±2 days, with a flux of (1.0±0.2). See ATel#8591
3C 454.3 bright all week with daily flux between (2.8±0.3) and (6.5±0.5).
CTA 102 bright all week (but Jan 19) with daily flux between (1.4±0.3) and (3.6±0.3).
PKS 1502+106 active during the week with daily flux between (0.7± 0.2) and (1.2±0.6).
NGC1275 active during the week with daily flux between (0.3± 0.1) and (0.7±0.2).
3C 279 detected on Jan 19 with flux (1.1±0.3), and then fading down to (0.3± 0.1) on Jan 23.
Sporadic daily detections of blazars (flux below 1): PKS B1424–418, 4C +01.02, S5 0716+71, Mkn 421, B2 1846+32A, PKS 2155–304, AO 0235+164, PKS 2023–07, PKS 1717+177, PKS 0336–01, PKS 0454–234, BL Lacertae, S4 0954+65, Ton 599, PKS 1313-333, 1ES 1959+650, TXS 2241+406, 3C 66A, 4C 38.41, PKS 2052-47, PKS 2233-148, PMN J2345-155, PKS 1441+25, S2 0109+22.

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:
- Marcello Giroletti (giroletti[at]ira.inaf.it) for generic information related to this week
- Contact persons on this page for individual sources cited above.

Wednesday, January 20, 2016

Fermi LAT Weekly report N. 397

Covered period: 2016.Jan.11 - 2016.Jan.17
LAT Mission week: 397.57 - 398.57

New gamma-ray source in the Galactic plane Fermi J0035+6131 detected on 14 Jan with daily flux (0.57±0.15). See ATel#8554.
AO 0235+164 active during the week with daily flux between (0.6±0.1) and (1.1±0.1).
3C 454.3 bright all week with daily fluxes between (2.4±0.4) and (4.7±0.4).
PKS 1502+106 active during the week with daily flux between (0.7± 0.2) and (1.7±0.6).
PKS 1313–333 active between 11 Jan and 16 Jan with daily fluxe between (0.8±0.2) and (1.2±0.2).
CTA 102 active between 13 Jan and 17 Jan with daily fluxe between (1.2±0.2) and (2.0±0.3).
3C 273 detected on 15 Jan with daily flux (1.1±0.2).
Sporadic daily detections of blazars (fluxes below 1): NGC 1275,S2 0109+22,PKS 2023–07,PKS 1717+177,PKS 0336–01,PMN J0422–0643,S5 0716+71,Mkn 421,B2 1846+32A,PKS 2155–304,OJ 014,PKS 0454–234,BL Lacertae,S4 1030+61,GB6 J1542+6129,S4 1144+40,PKS B1424–418,4C +01.02, S4 1800+44,1ES 1215+303,PMN J2052–5533,PKS 0226–559,S4 0954+65 .

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, January 13, 2016

Fermi LAT Weekly report N. 396

Covered period: 2016 January 4-10
LAT Mission week: 396.57-397.57

Enhanced gamma-ray activity of the Crab nebula. The source has surpassed the 4.0e-6 daily flux level five times in 12 days and has reached the value of 4.7e-6 on January 7 (more details in ATel#8519). The source seems dimmed to normal flux level at the end of the week.
A 250ks Fermi ToO has been performed.
Flare of PKS 1313-333 observed with daily flux 1.3e-6 on January 10. This is the first flare announced at this flux level by Fermi (more details in ATel#8533). The source is still increasing its daily flux also on January 11.
The gravitationally lensed LAT blazars S3 0218+35 (lens B0218+357) and PKS 1830-211 are both active on January 8. They are detected with daily fluxes respectively of 0.5e-6 and 1.3e-6. Both sources are quiescent at the end of the week.
3C 454.3 with daily fluxes between 2.0e-6 and 3.4e-6.
PKS 1424-41 in high state during the second half of the week with daily fluxes between 1.1e-6 and 1.4e-6.
PKS 1502+106 with daily fluxes between 0.8e-6 and 1.0e-6.
PKS 2023-07 with daily fluxes between 0.7e-6 and 1.0e-6.
3C 279 with daily fluxes between 0.6e-6 and 0.9e-6.
S5 0716+71 with daily fluxes between 0.5e-6 and 0.8e-6.
CTA 102 detected on January 4 at 0.9e-6.
Other blazars of the week detected, also sporadically, around or below about 0.5e-6: PKS 0208-512, PKS 0336-01, PKS 0301–243, PKS 1118-05, Mkn 421, PKS 2155-304, PKS 0454–234, PKS 0405-385, PKS 0426–380, 4C +01.02 (PKS 0106+01), Mkn 501, BL Lac, 3C 273, GB6 J1037+5711, PKS 0244-470, OJ 287, AO 0235+164, NGC 1275, B2 1520+31, 4C +38.41 (B2 1633+38), B2 1846+32A, PKS 0537-441, PMN J1331-1326, PKS 1035-281, Ton 599, TXS 1343+073, PKS 1510-08, NVSS J141828+354250, OJ 287, NRAO 62 (4C +31.03), 1ES 1959+650, 3C 66A, TXS 2241+406, PKS B0027-024, PKS 1717+177, S4 1849+67 (CGRaBS J1849+6705), S4 1030+61, S4 1800+44.

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.

Tuesday, January 12, 2016

Fermi LAT Weekly report N. 395

Covered period: 2015 December 28- 2016 January 03
LAT Mission week: 395.57 - 396.57

CTA 102 was detected all week with daily averaged fluxes between (0.6±0.2) and (6.3±0.4). See ATel #8478
PKS 1424-41 was detected all week with daily averaged fluxes between (1.0±0.2) and (1.4±0.2).
3C 454.3 was detected all week with daily averaged fluxes between (1.7±0.3) and (4.4±0.4).
TXS 1923+123 was detected on Dec. 30 with a daily averaged flux of (1.0±0.3). See ATel #8492
Sporadic daily detections of blazars (fluxes below 1):Mkn 421, PKS 1313-333, NGC 1275, PKS 1510-08, PKS 1502+106, 3C 273, PKS 0426-380, BL Lacertae, PKS 0454-234, S4 0954+64, Ton 599, OJ 014, FBQS J102333.6+395312, 4C +01.02, PMN J2141-6411, PKS 0301-243, S4 1849+67, 3C 279, S5 0716+71, PKS 0516-621, B2 1846+32A.

Fluxes are in the unit of 10-6 photons/cm2/s above 100 MeV. All errors 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:
- Bryce 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. 394

Covered period: 2015 December 21-27
LAT Mission week: 394.57 - 395.57

CTA 102 was detected all week with daily averaged fluxes between (0.7±0.2) and (2.5±0.3).
3C 454.3 was detected all week with daily averaged fluxes between (1.0±0.2) and (1.6±0.3).
PKS 1424-41 was detected all week with daily averaged fluxes between (0.7±0.2) and (1.2±0.2).
BL Lacertae was detected all week with daily averaged fluxes between (0.5±0.2) and (1.0±0.2).
3C 273 was detected all week with daily averaged fluxes between (0.7±0.2) and (1.4±0.2).
PKS 1502+106 was detected all week with daily averaged fluxes between (0.5±0.1) and (1.0±0.2).
Sporadic daily detections of blazars (fluxes below 1):S4 1849+67, AO 0235+164, PKS 2155-304, B2 1520+31, Mkn 421, OJ 287, 4C +31.03, 3C 279, PKS 0454-234, 4C +01.02, PKS 1510-08, IC 310, PKS 1313-333, PKS 1622-29, PKS 1244-255, Ton 599, 1ES 1959+650, S5 0716+71, NGC 1275, PMN J2141-6411, PKS 1118-05.

Fluxes are in the unit of 10-6 photons/cm2/s above 100 MeV. All errors 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:
- Roopesh Ojha (Roopesh.Ojha[at]gmail.com) for generic information related to this week
- Contact persons on this page for individual sources cited above.

Wednesday, December 23, 2015

Fermi LAT Weekly report N. 393

Covered period: 2015 December 14-20
LAT Mission week: 393.57 - 394.57

Flare of the NL-Sy1 galaxy PKS 1502+036 with peak daily flux of 0.9e-6 (17X the 3FGL flux) reached on December 20 (see more details in ATel#8447 and ATel#8450).
Hard flare of the BL Lac object PKS 1717+177 on December 16 with daily flux 0.4e-6 (20X the 3FGL flux) and ph.index 1.7 (more details in ATel#8427).
Flare of PKS 2155-304 with peak daily flux of 0.8e-6 (6.5X the 3FGL flux) reached on December 14.
Flare of gravitationally lensed blazar PKS 1830-211 on December 15 and 16, with daily flux 1.6e-6.
Flare of PKS 2320-035 on December 18 with daily with daily flux at 1.0e-6.
CTA 102 bright during the week with daily flux between 0.8e-6 and 1.0e-6.
PKS 1424-41 bright during the week with daily flux between 0.8e-6 and 0.9e-6.
AO 0235+164 bright during the week with daily flux between 0.7e-6 and 0.9e-6.
Flare of PKS 1622-29 on December 20 with daily with daily flux at 0.9e-6 (16X the 3FGL flux).
Flare of 1ES 1215+303 on December 14 with daily flux at 0.6e-6 (12X the 3FGL flux).
3C 454.3 with daily fluxes between 0.5e-6 and 1.4e-6.
Further bright blazars of the week detected with daily flux between about 0.6e-6 and 0.8e-6: S5 0836+71 (4C +71.07), 4C +01.02 (OC 12, PKS 0106+01), B2 1520+31 and PKS 1502+106.
Other blazars of the week detected around or below about 0.5e-6: PMN J1331-1326, 3C 279, BL Lac, PKS 1035-281, S5 0716+71, Ton 599, Mkn 421, 3C 273, TXS 1343+073, NGC 1275, PKS 1510-08, NVSS J141828+354250, OJ 287, S4 1849+67, NRAO 62 (4C +31.03), 1ES 1959+650, 4C +38.41 (B2 1633+38), 3C 66A, TXS 2241+406, PKS B0027-024 (TXS 0027-024), PKS 0426-380.

Wednesday, December 9, 2015

Fermi LAT Weekly Report N. 389

Covered period: 2015.Nov.16 - 2015.Nov.22
LAT Mission week: 389.57 - 390.57

4C +40.25 (B2 1020+40) was detected Nov. 20 through Nov. 22 with daily averaged fluxes between (0.4 +/- 0.1) and (0.8 +/- 0.2). See ATel #8339 for more information.
B2 1846+32B was detected Nov. 19 and Nov. 20 with daily averaged fluxes of (1.0 +/- 0.1). See ATel #8315 for more information.
TXS 2241+406 was detected all week with daily averaged fluxes between (0.2 +/- 0.1) and (1.2 +/- 0.2). See ATel #8319 for more information.
Ton 599 was detected all week with daily averaged fluxes between (0.4 +/- 0.1) and (1.0 +/- 0.2). See ATel #8319 for more information.
4C +01.02 (PKS 0106+01) was detected all week with daily averaged fluxes between (0.4 +/- 0.1) and (2.8 +/- 0.3). See ATel #8319 for more information.
3C 454.3 was detected all week with daily averaged fluxes between (1.6 +/- 0.3) and (3.2 +/- 0.3).
PKS 0336-01 was detected all week with daily averaged fluxes between (0.4 +/- 0.1) and (1.4 +/- 0.2).
S5 0836+71 (4C +71.07) was detected Nov. 19 and Nov. 20 with daily averaged fluxes of (0.8 +/- 0.1) and (0.9 +/- 0.2), respectively.
3C 279 was detected all week with daily averaged fluxes between (0.9 +/- 0.3) and (1.5 +/- 0.3).
PKS 1424-41 was detected all week with daily averaged fluxes between (0.7 +/- 0.3) and (1.1 +/- 0.3).
Sporadic daily detections of blazars (fluxes below 1): S5 0716+71, NGC 1275, PKS 0426-380, S4 0917+44, PKS 1550-242, PKS 0454-234, Mkn 421, AO 0235+164, 3C 273, PKS 0736+01, PKS 1502+106, PKS 2032+107, S5 0716+71, B2 1504+37, PMN J2345-1555, PKS 2320-035, S5 1803+784, PKS 2155-304, PKS 2023-07, 1ES 1959+650.

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.