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

4FGLJ1200.2+0201 Data	4FGLJ1200.6+1229 Data	4FGLJ1200.7+2008 Data
4FGLJ1200.8-1429 Data	4FGLJ1201.1-0332 Data	4FGLJ1201.7+1429 Data
4FGLJ1202.4+4442 Data	4FGLJ1202.5-0528 Data	4FGLJ1202.5+3852 Data
4FGLJ1202.9-5717 Data	4FGLJ1202.9+5141 Data	4FGLJ1202.9+5818 Data
4FGLJ1203.1+6031 Data	4FGLJ1203.3+1119 Data	4FGLJ1203.4-3925 Data
4FGLJ1203.4-6145 Data	4FGLJ1203.5-1748 Data	4FGLJ1203.5-5745 Data
4FGLJ1203.9-6242 Data	4FGLJ1204.0+1146 Data	4FGLJ1204.2-0709 Data
4FGLJ1204.3-6111 Data	4FGLJ1204.5-5032 Data	4FGLJ1204.8+0407 Data
4FGLJ1205.1-5951 Data	4FGLJ1205.7-2635 Data	4FGLJ1205.8+3321 Data
4FGLJ1206.8-5836 Data	4FGLJ1206.8-6038c Data	4FGLJ1207.2-0524 Data
4FGLJ1207.4-1840 Data	4FGLJ1207.4-4536 Data	4FGLJ1207.4-5050 Data
4FGLJ1207.7-0106 Data	4FGLJ1207.7-2229 Data	4FGLJ1207.9-6443c Data
4FGLJ1208.0-6900 Data	4FGLJ1208.1-5149 Data	4FGLJ1208.1+3017 Data
4FGLJ1208.2-6237 Data	4FGLJ1208.2-7810 Data	4FGLJ1208.2+1158 Data
4FGLJ1208.4+6121 Data	4FGLJ1208.5-5243e Data	4FGLJ1208.5-5512 Data
4FGLJ1208.8-1751 Data	4FGLJ1208.8-2754 Data	4FGLJ1208.9+5441 Data
4FGLJ1209.0-4630 Data	4FGLJ1209.2-7635 Data	4FGLJ1209.4-6421c Data
4FGLJ1209.4+4118 Data	4FGLJ1209.4+7608 Data	4FGLJ1209.7+2548 Data
4FGLJ1209.8+1810 Data	4FGLJ1209.9-5923 Data	4FGLJ1210.1+3241 Data
4FGLJ1210.4-6100c Data	4FGLJ1210.4-6250 Data	4FGLJ1210.7-6005c Data
4FGLJ1211.0-3800 Data	4FGLJ1211.6-2735 Data	4FGLJ1211.6+3901 Data
4FGLJ1212.0-2326 Data	4FGLJ1212.0+2242 Data	4FGLJ1212.2+2442 Data
4FGLJ1212.7-1402 Data	4FGLJ1213.0+5129 Data	4FGLJ1213.1-5957 Data
4FGLJ1213.3-2618 Data	4FGLJ1213.3-6240e Data	4FGLJ1213.6+1306 Data
4FGLJ1213.7+6423 Data	4FGLJ1213.8-4345 Data	4FGLJ1213.9-4416 Data
4FGLJ1214.5-2318 Data	4FGLJ1214.6-1926 Data	4FGLJ1214.7-5858 Data
4FGLJ1215.0+1656 Data	4FGLJ1215.1+0731 Data	4FGLJ1215.1+3513 Data
4FGLJ1215.1+5002 Data	4FGLJ1215.8-1733 Data	4FGLJ1215.8-3732 Data
4FGLJ1216.1-0242 Data	4FGLJ1216.1+0930 Data	4FGLJ1216.2-0600 Data
4FGLJ1216.2-1550 Data	4FGLJ1216.2-6121 Data	4FGLJ1216.2+0537 Data
4FGLJ1216.4-1358 Data	4FGLJ1216.8-5955 Data	4FGLJ1217.2-2500 Data
4FGLJ1217.9+3007 Data	4FGLJ1218.0-0028 Data	4FGLJ1218.5-0119 Data
4FGLJ1218.6-1049 Data	4FGLJ1219.0-4827 Data	4FGLJ1219.0+3653 Data
4FGLJ1219.0+4827 Data	4FGLJ1219.6+0550 Data	4FGLJ1219.7-0313 Data
4FGLJ1219.7+0444 Data	4FGLJ1219.9+6056 Data	4FGLJ1220.1-2458 Data
4FGLJ1220.1-5558 Data	4FGLJ1220.1+3432 Data	4FGLJ1220.1+7105 Data
4FGLJ1220.2-3713 Data	4FGLJ1220.5-2745 Data	4FGLJ1221.3+3010 Data
4FGLJ1221.4-0634 Data	4FGLJ1221.5+2814 Data	4FGLJ1222.0-4121 Data
4FGLJ1222.5+0414 Data	4FGLJ1223.0+1100 Data	4FGLJ1223.3+1213 Data
4FGLJ1223.5+0818 Data	4FGLJ1223.6-3032 Data	4FGLJ1223.8+4649 Data
4FGLJ1223.8+8039 Data	4FGLJ1223.9+5000 Data	4FGLJ1223.9+7954 Data
4FGLJ1224.1+2239 Data	4FGLJ1224.4+2436 Data	4FGLJ1224.6+7011 Data
4FGLJ1224.7-8313 Data	4FGLJ1224.9+2122 Data	4FGLJ1224.9+4334 Data
4FGLJ1225.0+0330 Data	4FGLJ1225.3-3446 Data	4FGLJ1225.4-1550 Data
4FGLJ1225.5-2851 Data	4FGLJ1225.6-7313 Data	4FGLJ1225.9+2951 Data
4FGLJ1226.0+5622 Data	4FGLJ1226.5+3023 Data	4FGLJ1226.7+0637 Data
4FGLJ1226.8-1329 Data	4FGLJ1226.8-4907 Data	4FGLJ1227.1-4437 Data
4FGLJ1228.0-4853 Data	4FGLJ1228.0-6918 Data	4FGLJ1228.3+7521 Data
4FGLJ1228.7-0318 Data	4FGLJ1228.7+4858 Data	4FGLJ1229.0+0202 Data
4FGLJ1229.5-3048 Data	4FGLJ1229.7-5304 Data	4FGLJ1230.2+2517 Data
4FGLJ1230.8+1223 Data	4FGLJ1230.9+3711 Data	4FGLJ1231.1-1412 Data
4FGLJ1231.5+1421 Data	4FGLJ1231.6-5116 Data	4FGLJ1231.6-6511 Data
4FGLJ1231.6+6415 Data	4FGLJ1231.7-6653 Data	4FGLJ1231.7+2847 Data
4FGLJ1232.1+5953 Data	4FGLJ1232.5-3720 Data	4FGLJ1232.5+4821 Data
4FGLJ1233.0+1333 Data	4FGLJ1233.1+1703 Data	4FGLJ1233.6+5027 Data
4FGLJ1233.7-0144 Data	4FGLJ1234.0-5735 Data	4FGLJ1234.7-0434 Data
4FGLJ1236.3+3858 Data	4FGLJ1236.9-7232 Data	4FGLJ1237.0+3019 Data
4FGLJ1237.8+6256 Data	4FGLJ1238.1-4541 Data	4FGLJ1238.3-1959 Data
4FGLJ1238.5-1201 Data	4FGLJ1239.4+0728 Data	4FGLJ1239.5+0443 Data
4FGLJ1239.7-3455 Data	4FGLJ1240.1-6846 Data	4FGLJ1240.4-2606 Data
4FGLJ1240.4-7148 Data	4FGLJ1241.3+4236 Data	4FGLJ1241.5+3439 Data
4FGLJ1241.8-1456 Data	4FGLJ1241.9+0636 Data	4FGLJ1242.4-2948 Data
4FGLJ1242.6+7635 Data	4FGLJ1242.9+7315 Data	4FGLJ1243.0+3950 Data
4FGLJ1243.2+3627 Data	4FGLJ1243.5+5311 Data	4FGLJ1243.7+1727 Data
4FGLJ1243.9-0218 Data	4FGLJ1244.2-4956 Data	4FGLJ1244.3-6233 Data
4FGLJ1244.5+1616 Data	4FGLJ1245.1+5709 Data	4FGLJ1245.8+0232 Data
4FGLJ1246.3+0112 Data	4FGLJ1246.7-2548 Data	4FGLJ1247.0+4421 Data
4FGLJ1248.3+5820 Data	4FGLJ1248.7+5127 Data	4FGLJ1248.9+4840 Data
4FGLJ1249.2-2809 Data	4FGLJ1249.3-0545 Data	4FGLJ1249.8+3707 Data
4FGLJ1250.6+0217 Data	4FGLJ1250.8-5424 Data	4FGLJ1250.8+3117 Data
4FGLJ1250.9-4943 Data	4FGLJ1251.2+1039 Data	4FGLJ1251.3-0201 Data
4FGLJ1251.3-1719 Data	4FGLJ1252.7-2520 Data	4FGLJ1253.2+5301 Data
4FGLJ1253.3-5816 Data	4FGLJ1253.5-3934 Data	4FGLJ1253.8+0327 Data
4FGLJ1253.8+2929 Data	4FGLJ1253.8+6242 Data	4FGLJ1254.2-2205 Data
4FGLJ1254.5+2210 Data	4FGLJ1254.7-4516 Data	4FGLJ1254.9-4426 Data
4FGLJ1254.9-7141 Data	4FGLJ1254.9+1138 Data	4FGLJ1256.1-0547 Data
4FGLJ1256.1-5652 Data	4FGLJ1256.1-5919 Data	4FGLJ1256.2-1146 Data
4FGLJ1256.8-1333 Data	4FGLJ1256.8+5329 Data	4FGLJ1256.9+2736 Data
4FGLJ1257.0-6339 Data	4FGLJ1257.2+3646 Data	4FGLJ1257.6+2413 Data
4FGLJ1257.8+3228 Data	4FGLJ1258.3+6121 Data	4FGLJ1258.4+6554 Data
4FGLJ1258.5-3406 Data	4FGLJ1258.6-1759 Data	4FGLJ1258.7-0452 Data
4FGLJ1258.7+5143 Data	4FGLJ1258.8-2219 Data	4FGLJ1259.0-8148 Data
4FGLJ1259.1-2311 Data	4FGLJ1259.5+2332 Data	4FGLJ1259.7-3223 Data
4FGLJ1259.8-3749 Data	4FGLJ1300.0+1753 Data	4FGLJ1300.4+1416 Data
4FGLJ1301.5+4413 Data	4FGLJ1301.6+0834 Data	4FGLJ1301.6+3336 Data
4FGLJ1301.6+4056 Data	4FGLJ1302.3+6901 Data	4FGLJ1302.4-3258 Data
4FGLJ1302.7+4750 Data	4FGLJ1302.8+5748 Data	4FGLJ1302.9-6349 Data
4FGLJ1303.0-6312e Data	4FGLJ1303.0+2434 Data	4FGLJ1303.1-4714 Data
4FGLJ1303.6-4622 Data	4FGLJ1304.0-5539 Data	4FGLJ1304.0+3704 Data
4FGLJ1304.2-2412 Data	4FGLJ1304.3-4353 Data	4FGLJ1304.4+1203 Data
4FGLJ1304.6-0348 Data	4FGLJ1304.6+0539 Data	4FGLJ1304.9-2107 Data
4FGLJ1305.3+5118 Data	4FGLJ1305.4-4928 Data	4FGLJ1305.5-6241 Data
4FGLJ1305.6+7853 Data	4FGLJ1305.9+3858 Data	4FGLJ1306.3-6043 Data
4FGLJ1306.3+1113 Data	4FGLJ1306.7-2148 Data	4FGLJ1306.8-4035 Data
4FGLJ1307.6-4259 Data	4FGLJ1308.4-6706 Data	4FGLJ1308.5+3547 Data
4FGLJ1308.7+0347 Data	4FGLJ1308.9-5730 Data	4FGLJ1309.1-6223 Data
4FGLJ1309.3+8035 Data	4FGLJ1309.4+4305 Data	4FGLJ1309.6+3718 Data
4FGLJ1309.7+1153 Data	4FGLJ1310.2-1158 Data	4FGLJ1310.5+3221 Data
4FGLJ1310.6+2449 Data	4FGLJ1310.7-5553 Data	4FGLJ1310.9+5514 Data
4FGLJ1311.0+0034 Data	4FGLJ1311.0+3233 Data	4FGLJ1311.7-3430 Data
4FGLJ1311.8+2057 Data	4FGLJ1311.8+3954 Data	4FGLJ1312.3-6257 Data
4FGLJ1312.4-2156 Data	4FGLJ1312.6-1900 Data	4FGLJ1312.6-6231c Data
4FGLJ1312.6+4828 Data	4FGLJ1312.7+0050 Data	4FGLJ1312.8-0425 Data
4FGLJ1312.8-2350 Data	4FGLJ1314.7+2348 Data	4FGLJ1315.0-4236 Data
4FGLJ1315.1-5333 Data	4FGLJ1315.4+8453 Data	4FGLJ1315.5+1135 Data
4FGLJ1315.9-0732 Data	4FGLJ1315.9-6243 Data	4FGLJ1315.9-6349c Data
4FGLJ1316.1-3338 Data	4FGLJ1316.5+3013 Data	4FGLJ1317.1+6613 Data
4FGLJ1317.5-0153 Data	4FGLJ1317.5-6316 Data	4FGLJ1317.6+3428 Data
4FGLJ1317.6+7450 Data	4FGLJ1318.1-1740 Data	4FGLJ1318.1-3937 Data
4FGLJ1318.2+6754 Data	4FGLJ1318.3-1148 Data	4FGLJ1318.5-6352 Data
4FGLJ1318.7-1234 Data	4FGLJ1318.9-4556 Data	4FGLJ1319.5-0045 Data
4FGLJ1319.5+1404 Data	4FGLJ1319.8+7759 Data	4FGLJ1320.3-6410c Data
4FGLJ1320.5-6256c Data	4FGLJ1320.7+3314 Data	4FGLJ1321.1-6239 Data
4FGLJ1321.1+2216 Data	4FGLJ1321.3-2641 Data	4FGLJ1321.9+3219 Data
4FGLJ1322.0-4624 Data	4FGLJ1322.0+8317 Data	4FGLJ1322.2+0842 Data
4FGLJ1322.3-0606 Data	4FGLJ1322.6-0936 Data	4FGLJ1322.6-1418 Data
4FGLJ1322.6-1617 Data	4FGLJ1322.9+0437 Data	4FGLJ1323.0+2941 Data
4FGLJ1323.9+1405 Data	4FGLJ1324.0-4330e Data	4FGLJ1324.9+4748 Data
4FGLJ1325.3-5413 Data	4FGLJ1325.5-4300 Data	4FGLJ1325.6-0227 Data
4FGLJ1326.0+3507 Data	4FGLJ1326.1+1232 Data	4FGLJ1326.6-4729 Data
4FGLJ1326.7-0503 Data	4FGLJ1326.8-5256 Data	4FGLJ1326.9+2210 Data
4FGLJ1327.8+2522 Data	4FGLJ1328.4-6231 Data	4FGLJ1328.5-4727 Data
4FGLJ1328.6+1145 Data	4FGLJ1329.0-5607 Data	4FGLJ1329.4-0530 Data
4FGLJ1329.9-6108 Data	4FGLJ1330.2-7003 Data	4FGLJ1330.2+7002 Data
4FGLJ1330.3+4441 Data	4FGLJ1330.4+3157 Data	4FGLJ1330.7+2933 Data
4FGLJ1330.7+5200 Data	4FGLJ1331.0+3032 Data	4FGLJ1331.0+5653 Data
4FGLJ1331.2-1325 Data	4FGLJ1331.3-3818 Data	4FGLJ1331.6+1711 Data
4FGLJ1331.7-0343 Data	4FGLJ1331.7-0647 Data	4FGLJ1332.0-0509 Data
4FGLJ1332.2+4722 Data	4FGLJ1332.6-1256 Data	4FGLJ1333.0-6626 Data
4FGLJ1333.2+2725 Data	4FGLJ1333.7+5056 Data	4FGLJ1334.1-3521 Data
4FGLJ1334.1-4154 Data	4FGLJ1334.5+5634 Data	4FGLJ1334.6-4435 Data
4FGLJ1334.8-3856 Data	4FGLJ1335.0-5656 Data	4FGLJ1335.3-2949 Data
4FGLJ1335.5-4546 Data	4FGLJ1335.6-4052 Data	4FGLJ1336.2+2053 Data
4FGLJ1336.2+2320 Data	4FGLJ1336.5-4655 Data	4FGLJ1337.4+5502 Data
4FGLJ1337.5-7802 Data	4FGLJ1337.6-1257 Data	4FGLJ1337.9-1956 Data
4FGLJ1338.0-4159 Data	4FGLJ1338.0+6534 Data	4FGLJ1338.8-4509 Data
4FGLJ1338.9+1153 Data	4FGLJ1339.0-2400 Data	4FGLJ1339.1-2620 Data
4FGLJ1339.9-0138 Data	4FGLJ1340.0-1501 Data	4FGLJ1340.1+3857 Data
4FGLJ1340.4+6926 Data	4FGLJ1340.5+4409 Data	4FGLJ1340.8-0409 Data
4FGLJ1341.1+7433 Data	4FGLJ1341.2+3958 Data	4FGLJ1341.6+5515 Data
4FGLJ1341.7-3907 Data	4FGLJ1341.7-6216 Data	4FGLJ1341.8-2053 Data
4FGLJ1342.6+0944 Data	4FGLJ1342.7+0505 Data	4FGLJ1343.5-6827 Data
4FGLJ1343.6+5755 Data	4FGLJ1343.8-6208 Data	4FGLJ1344.0+6605 Data
4FGLJ1344.1-7700 Data	4FGLJ1344.2-1723 Data	4FGLJ1344.4-3656 Data
4FGLJ1344.9-6228 Data	4FGLJ1345.3-6253 Data	4FGLJ1345.5+4453 Data
4FGLJ1345.6-3356 Data	4FGLJ1345.8+0706 Data	4FGLJ1345.9-2612 Data
4FGLJ1346.3-6026 Data	4FGLJ1346.5+5330 Data	4FGLJ1347.1-2959 Data
4FGLJ1347.4+7309 Data	4FGLJ1347.6-3751 Data	4FGLJ1348.5-8700 Data
4FGLJ1348.9+0756 Data	4FGLJ1349.1-5829 Data	4FGLJ1349.5-1131 Data
4FGLJ1349.5-7153 Data	4FGLJ1350.6-6224 Data	4FGLJ1350.8+3033 Data
4FGLJ1350.9-2757 Data	4FGLJ1351.0+0029 Data	4FGLJ1351.3+1115 Data
4FGLJ1351.4-1529 Data	4FGLJ1351.6-6142 Data	4FGLJ1351.7-2912 Data
4FGLJ1351.7+5542 Data	4FGLJ1351.9+2847 Data	4FGLJ1352.7-2742 Data
4FGLJ1353.0-4413 Data	4FGLJ1353.2+3740 Data	4FGLJ1353.3+1434 Data
4FGLJ1353.4+5600 Data	4FGLJ1353.5-6128 Data	4FGLJ1353.6-6640 Data
4FGLJ1353.7-3936 Data	4FGLJ1354.2+0353 Data	4FGLJ1354.2+6934 Data
4FGLJ1354.3-0206 Data	4FGLJ1354.4+3707 Data	4FGLJ1354.7+0623 Data
4FGLJ1354.8-1041 Data	4FGLJ1355.2-6420e Data	4FGLJ1356.0-6747 Data
4FGLJ1356.2-1726 Data	4FGLJ1356.6+0234 Data	4FGLJ1356.9-6432 Data
4FGLJ1357.1+1921 Data	4FGLJ1357.3-6123 Data	4FGLJ1357.3+3730 Data
4FGLJ1357.5+0127 Data	4FGLJ1357.9-4907 Data	4FGLJ1358.0-7749 Data
4FGLJ1358.1+7642 Data	4FGLJ1358.2-6210 Data	4FGLJ1358.3-6026 Data
4FGLJ1358.9-0703 Data	4FGLJ1359.1-1152 Data	4FGLJ1359.1+5544 Data
4FGLJ1359.4+0202 Data	4FGLJ1359.5-6615 Data	4FGLJ1359.7+4012 Data
4FGLJ1359.8-3746 Data	4FGLJ1359.9+3616 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