Fermi Gamma-ray Space Telescope

LAT 3FGL Catalog Aperture Photometry Lightcurves

We provide here aperture photometry light curves of all sources in the Fermi Large Area Telescope Third Source Catalog (3FGL) with 30 day time resolution. The light curves and plots will generally be updated weekly. We also plot power spectra of the light curves for periods between 65 days and the length of the light curve, with a frequency oversampling of a factor of 5.

Some caveats:

  • These light curves are intended to provide a quick way to inspect gross features in the long-term light curves. They are unlikely to be directly useful for detailed scientific analysis.
  • They are not background subtracted.
  • The apertures will contain photons from nearby sources.

A thread describing the steps involved in aperture photometry of LAT data can be found here. A script to perform aperture photometry (aperture.pl) is available here.

The columns in the data files are:

  1. Time of center of bin (MJD)
  2. Count rate in the aperture in photons cm^-2 s^-1
  3. Count rate error based on the observed number of photons. This is used in the plots
  4. Half-width of the time bin in days.
  5. Count rate error based on the relative exposure of the time bin.
  6. Exposure in cm^2 s.
  7. Line number. This will not be present in later versions of these files.

The aperture photometry used:

  • 1 degree radius apertures
  • 100 MeV to 200 GeV
  • Data are P8 Source class (evclass=128), front+back (evtype=3)
  • A zenith limit of 105 degrees.
  • A rock limit of 90 degrees. (i.e. no filtering on this.)
  • A bore-sight limit of 180 degrees. (i.e. no filtering on this.)
  • Times when a source was closer than 5 degrees from the Sun are excluded.

For caveats on period detection in LAT light curves please see here.

Flaring Sources in the Aperture Photometry Lightcurves


RA Range:
00-01 | 02-03 | 04-05 | 06-07 | 08-09 | 10-11 | 12-13 | 14-15 | 16-17 | 18-19 | 20-21 | 22-23

3FGLJ0000.1+6545
lightcurve_3FGLJ0000.1p6545.png
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3FGLJ0000.2-3738
lightcurve_3FGLJ0000.2-3738.png
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3FGLJ0001.0+6314
lightcurve_3FGLJ0001.0p6314.png
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3FGLJ0001.2-0748
lightcurve_3FGLJ0001.2-0748.png
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3FGLJ0001.4+2120
lightcurve_3FGLJ0001.4p2120.png
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3FGLJ0001.6+3535
lightcurve_3FGLJ0001.6p3535.png
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3FGLJ0002.0-6722
lightcurve_3FGLJ0002.0-6722.png
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3FGLJ0002.2-4152
lightcurve_3FGLJ0002.2-4152.png
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3FGLJ0002.6+6218
lightcurve_3FGLJ0002.6p6218.png
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3FGLJ0003.2-5246
lightcurve_3FGLJ0003.2-5246.png
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3FGLJ0003.4+3100
lightcurve_3FGLJ0003.4p3100.png
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3FGLJ0003.5+5721
lightcurve_3FGLJ0003.5p5721.png
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3FGLJ0003.8-1151
lightcurve_3FGLJ0003.8-1151.png
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3FGLJ0004.2+0843
lightcurve_3FGLJ0004.2p0843.png
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lightcurve_3FGLJ0004.2p6757.png
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lightcurve_3FGLJ0004.7-4740.png
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lightcurve_3FGLJ0006.2p0135.png
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lightcurve_3FGLJ0006.4p3825.png
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lightcurve_3FGLJ0006.6p4618.png
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lightcurve_3FGLJ0007.0p7302.png
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lightcurve_3FGLJ0007.4p1742.png
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lightcurve_3FGLJ0007.9p4006.png
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lightcurve_3FGLJ0008.0p4713.png
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lightcurve_3FGLJ0008.5p6853.png
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lightcurve_3FGLJ0008.6-2340.png
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lightcurve_3FGLJ0008.7p6558.png
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3FGLJ0009.1+0630
lightcurve_3FGLJ0009.1p0630.png
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lightcurve_3FGLJ0009.3p5030.png
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lightcurve_3FGLJ0009.6-3211.png
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3FGLJ0010.5-1425
lightcurve_3FGLJ0010.5-1425.png
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3FGLJ0012.4+7040
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lightcurve_3FGLJ0014.0-5025.png
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3FGLJ0016.3-0013
lightcurve_3FGLJ0016.3-0013.png
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3FGLJ0016.5+1713
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3FGLJ0017.1+1445
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3FGLJ0017.6-0512
lightcurve_3FGLJ0017.6-0512.png
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3FGLJ0018.4+2947
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3FGLJ0018.9-8152
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lightcurve_3FGLJ0019.1-5645.png
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lightcurve_3FGLJ0021.6-2553.png
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lightcurve_3FGLJ0022.1-5141.png
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lightcurve_3FGLJ0023.5p4454.png
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lightcurve_3FGLJ0023.9-7203.png
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lightcurve_3FGLJ0024.4p0350.png
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lightcurve_3FGLJ0026.2-4812.png
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lightcurve_3FGLJ0026.7-4603.png
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lightcurve_3FGLJ0028.6p7507.png
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lightcurve_3FGLJ0028.8p1951.png
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3FGLJ0029.1-7045
lightcurve_3FGLJ0029.1-7045.png
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3FGLJ0030.2-1646
lightcurve_3FGLJ0030.2-1646.png
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lightcurve_3FGLJ0030.3-4223.png
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3FGLJ0030.4+0451
lightcurve_3FGLJ0030.4p0451.png
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3FGLJ0030.7-0209
lightcurve_3FGLJ0030.7-0209.png
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lightcurve_3FGLJ0031.2-2320.png
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3FGLJ0031.3+0724
lightcurve_3FGLJ0031.3p0724.png
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lightcurve_3FGLJ0031.6p0938.png
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3FGLJ0032.3-2852
lightcurve_3FGLJ0032.3-2852.png
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lightcurve_3FGLJ0032.3-5522.png
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lightcurve_3FGLJ0032.5p3912.png
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lightcurve_3FGLJ0033.6-1921.png
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lightcurve_3FGLJ0034.3-0534.png
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lightcurve_3FGLJ0035.2p1513.png
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lightcurve_3FGLJ0035.9p5949.png
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lightcurve_3FGLJ0037.9p1239.png
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3FGLJ0038.0-2501
lightcurve_3FGLJ0038.0-2501.png
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3FGLJ0038.0+0012
lightcurve_3FGLJ0038.0p0012.png
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3FGLJ0039.0-2218
lightcurve_3FGLJ0039.0-2218.png
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lightcurve_3FGLJ0039.1-0939.png
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3FGLJ0039.1+4330
lightcurve_3FGLJ0039.1p4330.png
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lightcurve_3FGLJ0039.3p6256.png
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lightcurve_3FGLJ0040.3p4049.png
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lightcurve_3FGLJ0040.5-2339.png
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lightcurve_3FGLJ0041.9p3639.png
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lightcurve_3FGLJ0042.0p2318.png
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lightcurve_3FGLJ0042.5p4117.png
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lightcurve_3FGLJ0043.5-0444.png
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lightcurve_3FGLJ0043.7-1117.png
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3FGLJ0043.8+3425
lightcurve_3FGLJ0043.8p3425.png
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lightcurve_3FGLJ0045.2-3704.png
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3FGLJ0045.3+2126
lightcurve_3FGLJ0045.3p2126.png
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lightcurve_3FGLJ0045.7p1217.png
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lightcurve_3FGLJ0046.7-8419.png
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lightcurve_3FGLJ0047.9p5447.png
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lightcurve_3FGLJ0049.4-4149.png
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lightcurve_3FGLJ0050.0-4458.png
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lightcurve_3FGLJ0050.6-0929.png
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lightcurve_3FGLJ0051.0-0649.png
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lightcurve_3FGLJ0051.2-6241.png
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lightcurve_3FGLJ0055.2-1213.png
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lightcurve_3FGLJ0056.3-0935.png
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lightcurve_3FGLJ0056.3-2116.png
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lightcurve_3FGLJ0057.9-0542.png
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lightcurve_3FGLJ0059.1-5701.png
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