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

4FGLJ0400.7+3920 Data	4FGLJ0401.0-5353 Data	4FGLJ0401.3+0412 Data
4FGLJ0401.7+2112 Data	4FGLJ0401.9-2034 Data	4FGLJ0402.0-2616 Data
4FGLJ0402.0+2737 Data	4FGLJ0402.1-3147 Data	4FGLJ0402.5+5402 Data
4FGLJ0402.9+6433 Data	4FGLJ0403.3+1249 Data	4FGLJ0403.3+2601 Data
4FGLJ0403.5-2437 Data	4FGLJ0403.9-3605 Data	4FGLJ0404.1-1715 Data
4FGLJ0404.3-1559 Data	4FGLJ0405.4-6929 Data	4FGLJ0405.6-1308 Data
4FGLJ0405.9+3041c Data	4FGLJ0406.0-5407 Data	4FGLJ0406.2+0639 Data
4FGLJ0407.0-3826 Data	4FGLJ0407.5+0741 Data	4FGLJ0407.7-5702 Data
4FGLJ0409.2+2542 Data	4FGLJ0409.4-3822 Data	4FGLJ0409.4+3201 Data
4FGLJ0409.7+4006c Data	4FGLJ0409.8-0359 Data	4FGLJ0410.9+4216 Data
4FGLJ0411.7+3041 Data	4FGLJ0412.3+0239 Data	4FGLJ0412.5+6519c Data
4FGLJ0413.1-0304 Data	4FGLJ0413.1-5332 Data	4FGLJ0413.4-8609 Data
4FGLJ0414.3+4522 Data	4FGLJ0414.6-0842 Data	4FGLJ0414.6+5711 Data
4FGLJ0414.7-4300 Data	4FGLJ0414.8-5338 Data	4FGLJ0415.2-5741 Data
4FGLJ0416.0-4743 Data	4FGLJ0416.0-6628 Data	4FGLJ0416.2-4353 Data
4FGLJ0416.5-1852 Data	4FGLJ0416.9+0105 Data	4FGLJ0418.1-0252 Data
4FGLJ0418.2+3807 Data	4FGLJ0418.4-4342 Data	4FGLJ0418.4+3414 Data
4FGLJ0418.9+6636 Data	4FGLJ0420.0+0805 Data	4FGLJ0420.2+4012 Data
4FGLJ0420.3-3745 Data	4FGLJ0420.3-6016 Data	4FGLJ0421.0-0752 Data
4FGLJ0422.1-0644 Data	4FGLJ0422.3+1951 Data	4FGLJ0422.8+0225 Data
4FGLJ0423.0-0943 Data	4FGLJ0423.1+2106 Data	4FGLJ0423.3-0120 Data
4FGLJ0423.9+4150 Data	4FGLJ0424.7+0036 Data	4FGLJ0424.9-5331 Data
4FGLJ0425.3+6319 Data	4FGLJ0426.5+5434 Data	4FGLJ0426.7+6826 Data
4FGLJ0427.2+5533e Data	4FGLJ0427.3-3900 Data	4FGLJ0427.3+0504 Data
4FGLJ0427.4+6433c Data	4FGLJ0427.8-6704 Data	4FGLJ0427.9+3632c Data
4FGLJ0428.6-3756 Data	4FGLJ0428.7-5003 Data	4FGLJ0429.0-0006 Data
4FGLJ0429.3-3238 Data	4FGLJ0429.3-4326 Data	4FGLJ0429.8+2843 Data
4FGLJ0429.9-3101 Data	4FGLJ0430.2-0356 Data	4FGLJ0430.3-2507 Data
4FGLJ0430.3+1654 Data	4FGLJ0431.8+7403 Data	4FGLJ0432.0+1732 Data
4FGLJ0433.0+0522 Data	4FGLJ0433.0+1327 Data	4FGLJ0433.1+3227 Data
4FGLJ0433.5-1039 Data	4FGLJ0433.6-6030 Data	4FGLJ0433.6+2905 Data
4FGLJ0433.7-5725 Data	4FGLJ0434.1-2014 Data	4FGLJ0434.4-2342 Data
4FGLJ0434.7+0922 Data	4FGLJ0435.4-2623 Data	4FGLJ0435.5+3232 Data
4FGLJ0436.2-0038 Data	4FGLJ0436.7-7148 Data	4FGLJ0436.8-5223 Data
4FGLJ0436.9+2915 Data	4FGLJ0437.2-4715 Data	4FGLJ0437.2-5846 Data
4FGLJ0437.4-6155 Data	4FGLJ0438.0-7329 Data	4FGLJ0438.2-4243 Data
4FGLJ0438.4-1254 Data	4FGLJ0438.7-3441 Data	4FGLJ0438.9-4521 Data
4FGLJ0439.2+2151 Data	4FGLJ0439.4-3202 Data	4FGLJ0439.6-8322 Data
4FGLJ0439.8-1859 Data	4FGLJ0440.2-2458 Data	4FGLJ0440.3-4333 Data
4FGLJ0440.4+1440 Data	4FGLJ0440.8+2749 Data	4FGLJ0441.3-2617 Data
4FGLJ0441.5+1505 Data	4FGLJ0442.0-5432 Data	4FGLJ0442.6-0017 Data
4FGLJ0442.7+6142 Data	4FGLJ0442.8+3609 Data	4FGLJ0443.3-6652 Data
4FGLJ0443.4-4152 Data	4FGLJ0444.5+0719 Data	4FGLJ0444.6+3425 Data
4FGLJ0444.8-3514 Data	4FGLJ0445.1-6012 Data	4FGLJ0445.7+1535 Data
4FGLJ0447.2-2539 Data	4FGLJ0447.2+2446 Data	4FGLJ0447.4-2747 Data
4FGLJ0448.3+2743 Data	4FGLJ0448.6-1632 Data	4FGLJ0448.7-2116 Data
4FGLJ0449.1+1121 Data	4FGLJ0449.2+6329 Data	4FGLJ0449.4-4350 Data
4FGLJ0449.6-8100 Data	4FGLJ0449.6+3027 Data	4FGLJ0450.3-4419 Data
4FGLJ0450.4+7230 Data	4FGLJ0450.7-4938 Data	4FGLJ0451.8-4651 Data
4FGLJ0451.8+5721 Data	4FGLJ0452.0+2100 Data	4FGLJ0452.9+5117 Data
4FGLJ0453.1-2806 Data	4FGLJ0453.1+6322 Data	4FGLJ0453.3+2843 Data
4FGLJ0455.7-4617 Data	4FGLJ0455.9+6757 Data	4FGLJ0456.2+2702 Data
4FGLJ0456.3-1634 Data	4FGLJ0456.4-4043 Data	4FGLJ0456.6-3136 Data
4FGLJ0457.0-2324 Data	4FGLJ0457.0+0646 Data	4FGLJ0458.0+1152 Data
4FGLJ0459.4+1921 Data	4FGLJ0459.7-5413 Data	4FGLJ0500.1+5447 Data
4FGLJ0500.2+5237 Data	4FGLJ0500.3+4639e Data	4FGLJ0500.6-4911 Data
4FGLJ0500.9-6945e Data	4FGLJ0501.0+2424 Data	4FGLJ0501.2-0158 Data
4FGLJ0501.7+3048 Data	4FGLJ0502.2+3016 Data	4FGLJ0502.4+0609 Data
4FGLJ0502.5+1340 Data	4FGLJ0502.5+3438 Data	4FGLJ0502.9+6533 Data
4FGLJ0503.1-6045 Data	4FGLJ0503.5-1116 Data	4FGLJ0503.6+4518 Data
4FGLJ0503.8-7508 Data	4FGLJ0505.3+0459 Data	4FGLJ0505.6-1558 Data
4FGLJ0505.6+0415 Data	4FGLJ0505.6+6405 Data	4FGLJ0505.8-0419 Data
4FGLJ0505.8-3817 Data	4FGLJ0505.8+3322 Data	4FGLJ0506.0-0357c Data
4FGLJ0506.0+6113 Data	4FGLJ0506.1+5028 Data	4FGLJ0506.3-0620c Data
4FGLJ0506.6-4629 Data	4FGLJ0506.6+4545 Data	4FGLJ0506.7-0857 Data
4FGLJ0506.9-5435 Data	4FGLJ0506.9+0323 Data	4FGLJ0507.4-3346 Data
4FGLJ0507.7-6104 Data	4FGLJ0507.9+4647 Data	4FGLJ0507.9+6737 Data
4FGLJ0508.2-1937 Data	4FGLJ0508.2+5211 Data	4FGLJ0509.1+1943 Data
4FGLJ0509.2+5550 Data	4FGLJ0509.3-2917 Data	4FGLJ0509.4+0542 Data
4FGLJ0509.4+1012 Data	4FGLJ0509.6-0402 Data	4FGLJ0509.6+8425 Data
4FGLJ0509.9-6417 Data	4FGLJ0510.0+1800 Data	4FGLJ0510.4-1809 Data
4FGLJ0511.4-6804 Data	4FGLJ0512.3+3329 Data	4FGLJ0512.5-2201 Data
4FGLJ0512.8+4041 Data	4FGLJ0513.9-3746 Data	4FGLJ0514.5+6247 Data
4FGLJ0514.6-4408 Data	4FGLJ0515.5-0125 Data	4FGLJ0515.6-4556 Data
4FGLJ0515.8+1527 Data	4FGLJ0515.9+0537 Data	4FGLJ0516.1-7240 Data
4FGLJ0516.4+7350 Data	4FGLJ0516.7-6207 Data	4FGLJ0516.8-0509 Data
4FGLJ0517.5+0858 Data	4FGLJ0517.7-1758 Data	4FGLJ0517.9+5030 Data
4FGLJ0519.0+0851 Data	4FGLJ0519.6-4544 Data	4FGLJ0519.6+2744 Data
4FGLJ0519.9-6845e Data	4FGLJ0521.2+1637 Data	4FGLJ0521.3-1734 Data
4FGLJ0521.6+0103 Data	4FGLJ0521.7+2112 Data	4FGLJ0521.8-3848 Data
4FGLJ0522.9-3628 Data	4FGLJ0523.3-2527 Data	4FGLJ0524.4-2413 Data
4FGLJ0524.5+2839 Data	4FGLJ0524.6-2819 Data	4FGLJ0524.7-8304 Data
4FGLJ0524.7+4824 Data	4FGLJ0524.8-6938 Data	4FGLJ0525.4-4600 Data
4FGLJ0525.6-2008 Data	4FGLJ0525.6-6013 Data	4FGLJ0525.8-0052 Data
4FGLJ0526.1+6318 Data	4FGLJ0526.2-4830 Data	4FGLJ0526.3+2246 Data
4FGLJ0526.7-1519 Data	4FGLJ0526.7+4254 Data	4FGLJ0527.1+1152 Data
4FGLJ0527.3-6223 Data	4FGLJ0527.4+6647 Data	4FGLJ0528.3+1817 Data
4FGLJ0528.7-5920 Data	4FGLJ0529.1-0101 Data	4FGLJ0529.1-2449c Data
4FGLJ0529.1+0935 Data	4FGLJ0529.3-7243 Data	4FGLJ0529.4-0521 Data
4FGLJ0529.9-0224 Data	4FGLJ0530.0-6900e Data	4FGLJ0530.9+1332 Data
4FGLJ0531.5-7823 Data	4FGLJ0531.7+1241c Data	4FGLJ0531.8-6639e Data
4FGLJ0532.0-4827 Data	4FGLJ0532.6+0732 Data	4FGLJ0532.6+3358 Data
4FGLJ0532.8-3941 Data	4FGLJ0532.9-8325 Data	4FGLJ0533.0-8446 Data
4FGLJ0533.1-6119 Data	4FGLJ0533.3-5549 Data	4FGLJ0533.3+4823 Data
4FGLJ0533.5+1449 Data	4FGLJ0533.6+5945 Data	4FGLJ0533.8-3749 Data
4FGLJ0533.8+6800 Data	4FGLJ0533.9+2838 Data	4FGLJ0534.0+3746c Data
4FGLJ0534.2+2751 Data	4FGLJ0534.5+2200 Data	4FGLJ0534.5+2201i Data
4FGLJ0534.5+2201s Data	4FGLJ0535.1-5422 Data	4FGLJ0535.2-6736 Data
4FGLJ0535.3+0934 Data	4FGLJ0536.0-2754 Data	4FGLJ0536.1-1205 Data
4FGLJ0536.2+1733 Data	4FGLJ0536.4-3343 Data	4FGLJ0536.4-3401 Data
4FGLJ0536.5-2548 Data	4FGLJ0537.5+0959 Data	4FGLJ0537.7-5717 Data
4FGLJ0537.8-6909 Data	4FGLJ0538.2-3910 Data	4FGLJ0538.6+0443 Data
4FGLJ0538.8-4405 Data	4FGLJ0538.9+3549c Data	4FGLJ0539.0+1644 Data
4FGLJ0539.2-6333 Data	4FGLJ0539.6+1432 Data	4FGLJ0539.7-0521c Data
4FGLJ0539.9-2839 Data	4FGLJ0540.0-7552 Data	4FGLJ0540.0+1209 Data
4FGLJ0540.2+0655 Data	4FGLJ0540.3-6920 Data	4FGLJ0540.3+2756e Data
4FGLJ0540.5+5823 Data	4FGLJ0540.6+5540 Data	4FGLJ0540.7+3611c Data
4FGLJ0540.8-5415 Data	4FGLJ0541.1-4854 Data	4FGLJ0541.4-7334 Data
4FGLJ0541.6-0541 Data	4FGLJ0542.4+3547c Data	4FGLJ0542.8-3458 Data
4FGLJ0542.9-0913 Data	4FGLJ0543.5-8741 Data	4FGLJ0543.9-0418 Data
4FGLJ0543.9-5531 Data	4FGLJ0544.4+2238 Data	4FGLJ0544.8+5209c Data
4FGLJ0545.0+0613c Data	4FGLJ0545.7+6016 Data	4FGLJ0545.8-0905 Data
4FGLJ0546.5-1100 Data	4FGLJ0546.9-2206 Data	4FGLJ0548.5-5218 Data
4FGLJ0548.6+1200 Data	4FGLJ0549.0+3258c Data	4FGLJ0550.3-5733 Data
4FGLJ0550.5-3216 Data	4FGLJ0550.5-4356 Data	4FGLJ0550.9+2552c Data
4FGLJ0551.0-1622 Data	4FGLJ0551.7+0446 Data	4FGLJ0551.8-2130 Data
4FGLJ0551.8-3517 Data	4FGLJ0552.0+2656c Data	4FGLJ0552.4+3755 Data
4FGLJ0552.8+0313 Data	4FGLJ0553.5-2034 Data	4FGLJ0553.5+4810 Data
4FGLJ0553.6+0100 Data	4FGLJ0553.9-5048 Data	4FGLJ0554.0-0839 Data
4FGLJ0554.1+3107 Data	4FGLJ0554.2-0259 Data	4FGLJ0554.3-1009c Data
4FGLJ0555.1+0150c Data	4FGLJ0555.1+0304 Data	4FGLJ0555.6+3947 Data
4FGLJ0556.2-4352 Data	4FGLJ0557.3-0615 Data	4FGLJ0557.5-4452 Data
4FGLJ0557.6-0721 Data	4FGLJ0558.0-3837 Data	4FGLJ0558.1-2113 Data
4FGLJ0558.1-2859 Data	4FGLJ0558.2+0132c Data	4FGLJ0558.8-7459 Data
4FGLJ0559.3+0352 Data	4FGLJ0559.6+3044 Data	4FGLJ0559.9+6409 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