IC40+59 Time-Dependent PS goings-on

Mike BakerMadison Group meeting

June 3, 2011

Time-dependent analysesAs in IC40, we propose to use lightcurves from Fermi to test for

flaring behavior. The lightcurve is used to test for neutrino emission in coincidence with photon flares.

We propose to use the lightcurves from both IC40 and IC59 to test for flaring behavior from 23 sources. The blazar 3C 454.3 lightcurve is shown below.

IC40 IC59

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We tested the discovery potential for different true levels of emission, and find a similar behavior in the combined sample as in only IC40.

Objects with Fermi lightcurves: 235 objects with flares in both sets11 objects with flares in only IC597 objects with flares in only IC40

Lots of info and links here:http://wiki.icecube.wisc.edu/index.php/IC59_Time_Dependent_Analysis/mwl

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We tested 23 separate sources for coincidence of neutrino arrival time with hightened GeV photon flux states as observed by the Fermi space telescope.

The best source was PKS 1622-253, which has an 8% pretrial p-value. Accounting for the trials, the p-value is 51%

Most significant source: PKS 1622-253 Sees two events during the flare

3C273 I see a slight excess from 3C273, but it's still

~40% pretrial p-value when matching up the neutrinos with the lightcurve.

Dariusz and Angel in Zeuthen alsod did an analysis looking from flaring behavior from 3C273, and claim to see an excess of time-clustering in the period before the largest flares.

4 doublets, 2 of which were <2 mins apart. (others 20 minutes, and 9.6 hours).

I don't know which events are contributing.

I actually think that the period after the big flares is more interesting, there's several very strongly signal-like events

Strongest event looks like it's a starting track, reconstructed with energy 50 TeV

Still up: all-sky untriggered flare search, which is re-running on the cluster.