TITLE: GCN CIRCULAR NUMBER: 11349 SUBJECT: GRB 101014A: Fermi LAT detection DATE: 10/10/17 20:11:44 GMT FROM: James Chiang at SLAC Yasuyuki Tanaka, Masanori Ohno (ISAS/JAXA), Johan Bregeon (INFN, Pisa), Elena Moretti (KTH), Giacomo Vianello (CIFS, SLAC) and Nicola Omodei (Stanford) report on behalf of the Fermi LAT collaboration. The Fermi Large Area Telescope (LAT) detected emission from GRB 101014A, which was also detected by GBM at 04:11:52.62 UT, 14 October 2010 (GBM trigger 308722314, GCN 11341). This burst was initially at an angle of ~54 degrees to the LAT boresight and triggered an autonomous repoint of the spacecraft. Because of the burst's proximity to the orbital pole, there was substantial contamination in the surrounding region owing to gamma-ray emission from the Earth's limb. A significant excess above background was not seen using standard analysis procedures. Using a non-standard data selection that increases the low energy acceptance at the cost of a greater background (~13 Hz), the LAT light curve consists of a single, narrow pulse with ~3 s width, containing over 200 counts above background. This pulse was detected approximately 210 s after the GBM trigger time. A spectral fit of the LAT data in the 3 s pulse window yields a photon index of -2.6 +/- 0.1 (stat) and a flux of 0.020 +/- 0.014 ph/s-cm^2 in the 10-100 MeV band. These data have insufficient spatial resolution to provide a reliable LAT localization. Further analysis is ongoing. The Fermi LAT point of contact for this burst is Yasuyuki Tanaka (tanaka@astro.isas.jaxa.jp). 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.