Fermi Science Support Center

LAT 2-year Point Source Catalog Aperture Photometry Lightcurves Flares

Due to a glitch in the analysis pipeline there are apparent increases in flux around MJD 56810 for many sources. These increases are *not* real and should be disregarded. The problem is now believed to be fixed, and the most recent flux measurements are expected to be correct. At a later date the light curves will be reprocessed to remove these incorrect data points.

Please pay attention to all of the caveats on the Aperture Photometry Lightcurve Page. All of the warnings detailed there pertain to this analysis as well.

The following lightcurves were found to have extraordinary flaring events in the last 28 days. This page is updated whenever the Aperture Photometry Lightcurves are updated. These events were determined in the following fashion:

  1. The mean and standard deviation of the count rate is found for each light curve weighted by the error.
  2. The deviation from the mean is calculated for each point in each lightcurve (weighted by the error on the count rate and the standard deviation in quadrature).
  3. The mean and standard deviation of the deviations of all datapoints of all lightcurves are then computed.
  4. Any lightcurve exhibiting a '4 sigma' flare (4 times the standard deviation of the deviations of all of the lightcurves) in the last 28 days is then shown here.

Each panel shows:

  • the 2FGL name,
  • the 2FGL coordinates as a link to a Simbad search (radius of 10 arcmin),
  • the Aperture Photometry Lightcurve, and
  • the 2FGL association (if any) as a link to a Simbad search.

Looking for flares from MJD 56840 to MJD 56868.

2FGLJ2253.9+1609
(343.49741,16.152599)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ2253.9p1609.png
Data: 2FGLJ2253.9+1609
Assoc: 3C 454.3
2FGLJ1626.1-2948
(246.52858,-29.809269)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ1626.1-2948.png
Data: 2FGLJ1626.1-2948
Assoc: PKS 1622-29
2FGLJ1725.1-7714
(261.2774,-77.248093)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ1725.1-7714.png
Data: 2FGLJ1725.1-7714
Assoc: PKS 1716-771
2FGLJ0536.2-3348
(84.055992,-33.810493)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ0536.2-3348.png
Data: 2FGLJ0536.2-3348
Assoc: 1RXS J053629.4-334302
2FGLJ1800.5+7829
(270.14719,78.483376)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ1800.5p7829.png
Data: 2FGLJ1800.5+7829
Assoc: S5 1803+784
2FGLJ0205.4+3211
(31.364309,32.194069)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ0205.4p3211.png
Data: 2FGLJ0205.4+3211
Assoc: B2 0202+31
2FGLJ0505.5+0501
(76.384605,5.0320034)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ0505.5p0501.png
Data: 2FGLJ0505.5+0501
Assoc: PKS 0502+049
2FGLJ1146.8-3812
(176.72134,-38.206726)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/ap_lcs/lightcurve_2FGLJ1146.8-3812.png
Data: 2FGLJ1146.8-3812
Assoc: PKS 1144-379
Intentionally Left Blank.

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