National Aeronautics and Space Administration

Goddard Space Flight Center

Data

• Data Policy
• Data Access

• Data Analysis
• Caveats
• Newsletters
• FAQ

LAT 4FGL-DR2 Catalog Aperture Photometry Lightcurves

We provide here aperture photometry light curves of all sources in the Fermi Large Area Telescope 10-year Source Catalog (4FGL-DR2) 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.

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

4FGLJ0200.3-4109 Data	4FGLJ0200.6-6637 Data	4FGLJ0201.1-4347 Data
4FGLJ0201.1+0036 Data	4FGLJ0202.4+0849 Data	4FGLJ0202.4+2943 Data
4FGLJ0202.6-0258 Data	4FGLJ0202.7+4204 Data	4FGLJ0202.9-0225 Data
4FGLJ0203.6+7233 Data	4FGLJ0203.7+3042 Data	4FGLJ0203.9+8120 Data
4FGLJ0204.0-3334 Data	4FGLJ0204.1-2919 Data	4FGLJ0204.3-3140 Data
4FGLJ0204.3+2417 Data	4FGLJ0204.7+6656 Data	4FGLJ0204.8+1513 Data
4FGLJ0205.0-1700 Data	4FGLJ0205.2+3212 Data	4FGLJ0205.7+6449 Data
4FGLJ0206.0-0958 Data	4FGLJ0206.4-1151 Data	4FGLJ0206.8-5744 Data
4FGLJ0207.2-1832 Data	4FGLJ0207.4-3855 Data	4FGLJ0207.5-1049 Data
4FGLJ0207.5-2402 Data	4FGLJ0207.9+0953 Data	4FGLJ0207.9+2203 Data
4FGLJ0208.3-6838 Data	4FGLJ0208.5-0046 Data	4FGLJ0208.6+3523 Data
4FGLJ0209.3-5228 Data	4FGLJ0209.3+4449 Data	4FGLJ0209.8+2626 Data
4FGLJ0209.9+7229 Data	4FGLJ0210.1+2518 Data	4FGLJ0210.5-1445 Data
4FGLJ0210.7-5101 Data	4FGLJ0211.1-0646 Data	4FGLJ0211.2+1051 Data
4FGLJ0211.5+6219 Data	4FGLJ0212.1+5321 Data	4FGLJ0212.2-0219 Data
4FGLJ0212.2-2559 Data	4FGLJ0212.4-3502 Data	4FGLJ0212.8-2721 Data
4FGLJ0212.9+2244 Data	4FGLJ0213.8-6949 Data	4FGLJ0214.1-4733 Data
4FGLJ0214.2-7025 Data	4FGLJ0214.3+5145 Data	4FGLJ0214.4-5822 Data
4FGLJ0214.6-4333 Data	4FGLJ0214.8-6150 Data	4FGLJ0214.9-3722 Data
4FGLJ0215.0-5330 Data	4FGLJ0215.3+7555 Data	4FGLJ0215.9+0300 Data
4FGLJ0216.5+2313 Data	4FGLJ0216.6-1015 Data	4FGLJ0216.8-6635 Data
4FGLJ0216.8+0510 Data	4FGLJ0217.0-0821 Data	4FGLJ0217.2+0837 Data
4FGLJ0217.4+7352 Data	4FGLJ0217.8+0144 Data	4FGLJ0218.1+4232 Data
4FGLJ0218.9-2305 Data	4FGLJ0218.9+3643 Data	4FGLJ0219.0+2443 Data
4FGLJ0219.1-1724 Data	4FGLJ0219.5+0724 Data	4FGLJ0220.1+1155 Data
4FGLJ0220.2+3246 Data	4FGLJ0220.8-0841 Data	4FGLJ0221.1+3556 Data
4FGLJ0221.2-1312 Data	4FGLJ0221.4+6241e Data	4FGLJ0221.5+2513 Data
4FGLJ0221.8+3730 Data	4FGLJ0222.0-1616 Data	4FGLJ0222.4+6156e Data
4FGLJ0222.6+4302 Data	4FGLJ0222.7+5016 Data	4FGLJ0223.0-3447 Data
4FGLJ0223.0+6821 Data	4FGLJ0223.1-1117 Data	4FGLJ0223.2-1653 Data
4FGLJ0223.5-0928 Data	4FGLJ0223.5+3912 Data	4FGLJ0223.5+5415 Data
4FGLJ0224.0-1850 Data	4FGLJ0224.0-7941 Data	4FGLJ0224.2+0700 Data
4FGLJ0224.2+1616 Data	4FGLJ0224.8+2937 Data	4FGLJ0224.9+1843 Data
4FGLJ0225.1-2604 Data	4FGLJ0225.5-5530 Data	4FGLJ0225.6-4502 Data
4FGLJ0225.8+1310 Data	4FGLJ0226.3-1845 Data	4FGLJ0226.5-4441 Data
4FGLJ0226.5+0938 Data	4FGLJ0226.6-0553 Data	4FGLJ0226.7+2312 Data
4FGLJ0226.9+7744 Data	4FGLJ0227.2+3928 Data	4FGLJ0227.3+0201 Data
4FGLJ0227.8+2246 Data	4FGLJ0228.0-3026 Data	4FGLJ0228.1+8208 Data
4FGLJ0228.2-3102 Data	4FGLJ0228.3-5547 Data	4FGLJ0228.5-2234 Data
4FGLJ0228.7+6718 Data	4FGLJ0229.5-3644 Data	4FGLJ0230.3+1713 Data
4FGLJ0230.4-1140 Data	4FGLJ0230.8+4032 Data	4FGLJ0231.0+3505 Data
4FGLJ0231.2-4745 Data	4FGLJ0231.2-5754 Data	4FGLJ0231.8+1322 Data
4FGLJ0232.5-1118 Data	4FGLJ0232.8+2018 Data	4FGLJ0232.9+2608 Data
4FGLJ0233.0+3740 Data	4FGLJ0233.5+0654 Data	4FGLJ0233.9+8041 Data
4FGLJ0234.3-0628 Data	4FGLJ0235.3+5650 Data	4FGLJ0235.6-2939 Data
4FGLJ0236.8-6136 Data	4FGLJ0237.1-0714 Data	4FGLJ0237.3+2000 Data
4FGLJ0237.6-3602 Data	4FGLJ0237.6+0923 Data	4FGLJ0237.7+0206 Data
4FGLJ0237.8+2848 Data	4FGLJ0237.8+5238 Data	4FGLJ0238.1-2621 Data
4FGLJ0238.1-3905 Data	4FGLJ0238.2+1531 Data	4FGLJ0238.4-3116 Data
4FGLJ0238.6+1637 Data	4FGLJ0238.7+2555 Data	4FGLJ0239.1+6634 Data
4FGLJ0239.5-1353 Data	4FGLJ0239.5+1326 Data	4FGLJ0239.7+0415 Data
4FGLJ0240.2-0248 Data	4FGLJ0240.5+6113 Data	4FGLJ0240.8-3401 Data
4FGLJ0241.0-0505 Data	4FGLJ0241.3+6543 Data	4FGLJ0241.9-1603 Data
4FGLJ0242.3+1102 Data	4FGLJ0242.3+5216 Data	4FGLJ0242.6-0000 Data
4FGLJ0242.6+1735 Data	4FGLJ0242.9+0045 Data	4FGLJ0243.2-0550 Data
4FGLJ0243.4+7119 Data	4FGLJ0243.7+0321 Data	4FGLJ0244.6-5819 Data
4FGLJ0244.7+1316 Data	4FGLJ0245.0+4755 Data	4FGLJ0245.1-0257 Data
4FGLJ0245.4-5950 Data	4FGLJ0245.4+2408 Data	4FGLJ0245.5-4502 Data
4FGLJ0245.9-4650 Data	4FGLJ0246.0-4838 Data	4FGLJ0246.6-3348 Data
4FGLJ0248.0+2232 Data	4FGLJ0248.4+6021 Data	4FGLJ0248.6+4230 Data
4FGLJ0248.6+5131 Data	4FGLJ0250.2-8224 Data	4FGLJ0250.6+1712 Data
4FGLJ0250.6+8435 Data	4FGLJ0250.7+5630 Data	4FGLJ0251.0+2605 Data
4FGLJ0251.1-1830 Data	4FGLJ0251.5-5958 Data	4FGLJ0251.6+0628 Data
4FGLJ0252.0-3657 Data	4FGLJ0252.3-2707 Data	4FGLJ0252.8-2219 Data
4FGLJ0252.9+3834 Data	4FGLJ0253.2-0124 Data	4FGLJ0253.2-5441 Data
4FGLJ0253.5+3216 Data	4FGLJ0253.9+5103 Data	4FGLJ0255.8+0534 Data
4FGLJ0256.2-0408 Data	4FGLJ0256.3+0334 Data	4FGLJ0257.0+3358 Data
4FGLJ0257.8+7044 Data	4FGLJ0257.9-1215 Data	4FGLJ0258.1+2030 Data
4FGLJ0259.0+0552 Data	4FGLJ0259.3+5453 Data	4FGLJ0259.4+0308 Data
4FGLJ0259.4+0746 Data	4FGLJ0259.5-1705 Data	4FGLJ0259.5+1924 Data
4FGLJ0300.0-5908 Data	4FGLJ0300.4+3450 Data	4FGLJ0301.0-1652 Data
4FGLJ0301.2+2546 Data	4FGLJ0301.4-3124 Data	4FGLJ0301.6-5617 Data
4FGLJ0301.6-7155 Data	4FGLJ0301.9-2731 Data	4FGLJ0302.5+3354 Data
4FGLJ0302.7+5717 Data	4FGLJ0303.2+3149 Data	4FGLJ0303.3-7913 Data
4FGLJ0303.3+0555 Data	4FGLJ0303.4-2407 Data	4FGLJ0303.4-5232 Data
4FGLJ0303.6-6211 Data	4FGLJ0303.6+4716 Data	4FGLJ0304.4-2833 Data
4FGLJ0304.5-0054 Data	4FGLJ0304.5+3349 Data	4FGLJ0304.5+6821 Data
4FGLJ0304.6+6554 Data	4FGLJ0304.9-0606 Data	4FGLJ0305.1-1608 Data
4FGLJ0307.4+4915 Data	4FGLJ0307.8-0419 Data	4FGLJ0307.8+7443 Data
4FGLJ0308.1-2852 Data	4FGLJ0308.4+0407 Data	4FGLJ0308.9-4702 Data
4FGLJ0309.0+1029 Data	4FGLJ0309.4-4000 Data	4FGLJ0309.7-0745 Data
4FGLJ0309.9-6058 Data	4FGLJ0309.9-6941 Data	4FGLJ0310.6-5017 Data
4FGLJ0310.8-1041 Data	4FGLJ0310.9-3458 Data	4FGLJ0310.9+3815 Data
4FGLJ0311.2+6856 Data	4FGLJ0311.3+2940 Data	4FGLJ0311.5-4402 Data
4FGLJ0311.6+4134 Data	4FGLJ0312.1-0921 Data	4FGLJ0312.4-3221 Data
4FGLJ0312.5-2221 Data	4FGLJ0312.7+2012 Data	4FGLJ0312.8+0134 Data
4FGLJ0312.9+3614 Data	4FGLJ0312.9+4119 Data	4FGLJ0313.0+0229 Data
4FGLJ0313.6-7508 Data	4FGLJ0314.1+2827 Data	4FGLJ0314.1+5033 Data
4FGLJ0314.3-5103 Data	4FGLJ0314.3+0620 Data	4FGLJ0314.4-4805 Data
4FGLJ0314.6-6549 Data	4FGLJ0315.4-2643 Data	4FGLJ0315.5+4231 Data
4FGLJ0315.9-1033 Data	4FGLJ0316.0-5626 Data	4FGLJ0316.2-2608 Data
4FGLJ0316.2-6437 Data	4FGLJ0316.2+0905 Data	4FGLJ0316.8+4120 Data
4FGLJ0316.9-0625 Data	4FGLJ0317.7-2804 Data	4FGLJ0317.8-4414 Data
4FGLJ0318.2+0254 Data	4FGLJ0318.7+2135 Data	4FGLJ0318.8+2848 Data
4FGLJ0319.4-7045 Data	4FGLJ0319.8+1845 Data	4FGLJ0319.8+4130 Data
4FGLJ0319.9-3821 Data	4FGLJ0320.6+1125 Data	4FGLJ0321.3-1612 Data
4FGLJ0321.3+0425 Data	4FGLJ0322.0+2335 Data	4FGLJ0322.4+6606 Data
4FGLJ0322.6-3712e Data	4FGLJ0322.9+0940 Data	4FGLJ0323.7-0111 Data
4FGLJ0324.3-1313 Data	4FGLJ0324.8-2043 Data	4FGLJ0324.8+3412 Data
4FGLJ0325.0-2416 Data	4FGLJ0325.3+3332 Data	4FGLJ0325.5-5635 Data
4FGLJ0325.6-1646 Data	4FGLJ0325.7+2225 Data	4FGLJ0325.9-1843 Data
4FGLJ0326.2+0225 Data	4FGLJ0326.7-3404 Data	4FGLJ0327.5-1805 Data
4FGLJ0327.6+2620 Data	4FGLJ0328.4-4736 Data	4FGLJ0328.5+6114 Data
4FGLJ0328.6-1129 Data	4FGLJ0328.6+5330 Data	4FGLJ0328.8-5715 Data
4FGLJ0330.1+5038 Data	4FGLJ0330.6+0438 Data	4FGLJ0330.6+4659 Data
4FGLJ0330.7-2408 Data	4FGLJ0330.7+5845 Data	4FGLJ0331.1-5243 Data
4FGLJ0331.3-6156 Data	4FGLJ0331.8-7040 Data	4FGLJ0331.9+6307 Data
4FGLJ0332.1-1123 Data	4FGLJ0332.8+1557 Data	4FGLJ0333.0-3044 Data
4FGLJ0333.1+8227 Data	4FGLJ0333.3+0233 Data	4FGLJ0333.4-2705 Data
4FGLJ0333.7+2916 Data	4FGLJ0333.7+7851 Data	4FGLJ0333.8+4007 Data
4FGLJ0333.9+6537 Data	4FGLJ0334.2-3725 Data	4FGLJ0334.2-4008 Data
4FGLJ0334.3+3920 Data	4FGLJ0335.1-4459 Data	4FGLJ0336.0+7502 Data
4FGLJ0336.4+3224 Data	4FGLJ0336.5-0348 Data	4FGLJ0336.8-3612 Data
4FGLJ0337.5+2423c Data	4FGLJ0337.8-1157 Data	4FGLJ0338.1-2443 Data
4FGLJ0338.5+1302 Data	4FGLJ0338.7-5706 Data	4FGLJ0338.9-2848 Data
4FGLJ0339.2-1736 Data	4FGLJ0339.5-0146 Data	4FGLJ0340.3+4130 Data
4FGLJ0340.4-2422 Data	4FGLJ0340.4+5302 Data	4FGLJ0340.5-0256 Data
4FGLJ0340.5-2118 Data	4FGLJ0341.9+3153c Data	4FGLJ0342.2+3858 Data
4FGLJ0342.4+3125c Data	4FGLJ0342.8-3007 Data	4FGLJ0343.2-2529 Data
4FGLJ0343.2-6444 Data	4FGLJ0343.3-6303 Data	4FGLJ0343.4+3621 Data
4FGLJ0344.2+3203c Data	4FGLJ0344.4+3432 Data	4FGLJ0345.2-2353 Data
4FGLJ0345.5-3301 Data	4FGLJ0346.2+3235c Data	4FGLJ0347.0-6400 Data
4FGLJ0347.0+4844 Data	4FGLJ0347.5+0722 Data	4FGLJ0347.7-3616 Data
4FGLJ0348.2+6035 Data	4FGLJ0348.5-2749 Data	4FGLJ0348.6-1609 Data
4FGLJ0348.8-0828 Data	4FGLJ0348.8+4610 Data	4FGLJ0348.9-4859 Data
4FGLJ0349.4-1159 Data	4FGLJ0349.6+2410 Data	4FGLJ0349.6+4026 Data
4FGLJ0349.8-2103 Data	4FGLJ0350.0+0640 Data	4FGLJ0350.4-5144 Data
4FGLJ0350.6-3226 Data	4FGLJ0350.8-2814 Data	4FGLJ0352.0-2516 Data
4FGLJ0352.9-3623 Data	4FGLJ0353.0-6831 Data	4FGLJ0353.0+5654 Data
4FGLJ0353.7+8257 Data	4FGLJ0354.4+4643 Data	4FGLJ0354.7-1617 Data
4FGLJ0354.7+8009 Data	4FGLJ0355.1-1841 Data	4FGLJ0355.3+3909 Data
4FGLJ0356.1-1329 Data	4FGLJ0357.0-4955 Data	4FGLJ0357.2-0319 Data
4FGLJ0357.2+2320 Data	4FGLJ0357.6-4625 Data	4FGLJ0357.7-6808 Data
4FGLJ0357.8+3204 Data	4FGLJ0358.0-6946 Data	4FGLJ0358.1-5954 Data
4FGLJ0358.1+2850 Data	4FGLJ0358.6+0634 Data	4FGLJ0358.7-7403 Data
4FGLJ0358.7+7649 Data	4FGLJ0358.9+6004 Data	4FGLJ0359.0-3053 Data
4FGLJ0359.3+3626 Data	4FGLJ0359.4-0236 Data	4FGLJ0359.4-2616 Data
4FGLJ0359.4+5414 Data	4FGLJ0359.6+5057 Data	4FGLJ0359.7+4445 Data

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

• Curator: J.D. Myers
• NASA Official: Phil Newman
• Science Official: Elizabeth Hays

• › Privacy Policy and Important Notices
• › Contact NASA
• › Fermi FAQ, Comments, Feedback
• › Page Last Updated: Wed, Aug 12, 2020