Fermi Gamma-ray Space Telescope: High-Energy Results from the First Year [PDF]
The Fermi Gamma-ray Space Telescope (Fermi) was launched on June 11, 2008 and began its first year sky survey on August 11, 2008. The Large Area Telescope (LAT), a wide field-of-view pair-conversion telescope covering the energy range from 20 MeV to more than 300 GeV, is the primary instrument on Fermi.
P. F. Michelson, W. B. Atwood, S. Ritz
arxiv +5 more sources
A View of Supernova Remnant CTB 37A with the Fermi Gamma-ray Space Telescope [PDF]
Supernovae and their remnants have long been favored as cosmic ray ac- celerators. Recent data from the Fermi Gamma-ray Space Telescope has given us an improved window into such sources, including the remnant CTB 37A. Using the Fermi Large Area Telescope, we found significant gamma-ray emission coincident with the remnant, which also emits in radio, X ...
T. J. Brandt
arxiv +5 more sources
Searching for the most distant blazars with the Fermi Gamma-ray Space Telescope [PDF]
We investigate the prospects for discovering blazars at very high-redshifts (z>3-6) with the Fermi Gamma-Ray Space Telescope (Fermi), employing a model for the evolving gamma-ray luminosity function (GLF) of the blazar population. Our previous GLF model is used as a basis, which features luminosity-dependent density evolution implied from X-ray data on
Yoshiyuki Inoue+5 more
arxiv +5 more sources
Gamma-ray band and multi-waveband variability of blazars with the Fermi Large Area Space Telescope [PDF]
The Fermi Gamma-ray Space Telescope, as an all-sky survey and monitoring mission, is producing daily/weekly sampled gamma-ray light curves for dozens of blazars and other high-energy sources. Highlights on MeV-GeV gamma-ray variability properties of these sources are reported together with a few remarks about some multi-waveband observing campaigns led
S. Ciprini
arxiv +3 more sources
Twelve Years of Education and Public Outreach with the Fermi Gamma-ray Space Telescope [PDF]
During the past twelve years, NASA's Fermi Gamma-ray Space Telescope has supported a wide range of Education and Public Outreach (E/PO) activities, targeting K-14 students and the general public. The purpose of the Fermi E/PO program is to increase student and public understanding of the science of the high-energy Universe, through inspiring, engaging ...
Lynn Cominsky+3 more
arxiv +3 more sources
A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247–131 [PDF]
PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray Space Telescope to find that PKS 2247–131 presents a relatively short, month-like flux oscillation ...
Jianeng Zhou+7 more
doaj +2 more sources
Identification of Gamma-Ray Point Sources in Fermi-LAT Data with Minimum Spanning Tree Algorithm [PDF]
Gamma rays are the most energetic photons in the electromagnetic spectrum, detected with ground-based and space-based detectors in different energy ranges from sources in our galaxy and beyond.
Mehran Soor+2 more
doaj +1 more source
GRAINE project: precise gamma-ray observations with balloon-borne emulsion telescope [PDF]
Observation of cosmic gamma rays is important in the understanding of high-energy objects or phenomena in the universe. Since 2008, the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope (Fermi-LAT) has surveyed the sub-GeV/GeV gamma-ray ...
Rokujo Hiroki
doaj +1 more source
The Third Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars
We present 294 pulsars found in GeV data from the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. Another 33 millisecond pulsars (MSPs) discovered in deep radio searches of LAT sources will likely reveal pulsations once phase-connected
D. A. Smith+170 more
doaj +1 more source
XStorm: A New Gamma Ray Spectrometer for Detection of Close Proximity Gamma Ray Glows and TGFs
Abstract In this paper, we present XStorm, a gamma ray spectrometer developed to detect gamma ray glows and terrestrial gamma ray flashes (TGFs) in close proximity. Measurements are mostly planned to take place on balloon campaigns but also on the ground using bigger detectors.
Melody Pallu+4 more
wiley +1 more source