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Fermi-LAT Observations of Nova V1369 Centauri 2013 Brightening in Gamma rays

ATel #5653; C. C. Cheung (NRL), P. Jean (IRAP, Toulouse), on behalf of the Fermi Large Area Telescope Collaboration, S. N. Shore (U. Pisa and INFN)
on 12 Dec 2013; 21:36 UT
Credential Certification: Teddy Cheung (ccheung@milkyway.gsfc.nasa.gov)

Subjects: Gamma Ray, >GeV, Nova, Transient

Following the initial ~4 sigma Fermi-LAT detection of Nova V1369 Cen 2013 from December 7-9 (ATEL #5649), preliminary analysis indicates the nova brightened in gamma rays, with a two-day average flux, F(E>100 MeV) ~ (5.7 +/- 1.2) x 10^-7 ph cm^-2 s^-1 (7 sigma detection) during December 10-11. The flux is a factor of ~2.7 times greater than in the initial December 7-9 detection and the gamma-ray brightening appears to coincide with a second optical maximum in the pre-validated AAVSO light curve.

We strongly encourage multiwavelength observations. For this source the Fermi LAT contact person is C.C. Cheung (Teddy.Cheung@nrl.navy.mil).

The Fermi LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 GeV. It is the product of an international collaboration between NASA and DOE in the U.S. and many scientific institutions across France, Italy, Japan and Sweden.

AAVSO light curve