Results 81 to 90 of about 479,061 (218)

Fermi Large Area Telescope Bright Gamma-ray Source List

open access: yes, 2009
Following its launch in June 2008, the Fermi Gamma-ray Space Telescope (Fermi) began a sky survey in August. The Large Area Telescope (LAT) on Fermi in 3 months produced a deeper and better-resolved map of the gamma-ray sky than any previous space ...
A. A. Abdo   +252 more
core   +1 more source

Early Fermi-LAT results [PDF]

open access: yes, 2009
The Large Area Telescope (LAT), onboard the Fermi Gamma-ray Space Telescope (formerly GLAST, launched June 11, 2008) is a pair conversion telescope designed to study the gamma-ray sky in the energy range from 20MeV up to 300 GeV.
Monte, C.
core   +1 more source

Explaining the GeV excess with exploding black holes

open access: yesPhysics Letters B, 2023
Black holes may form in present-day collapse of microscopic structures of dark matter. We show that, if microstructure black holes (MSBH) with mass m∼1013 g are produced, the spectrum of gamma rays from their evaporation agrees remarkably well with the ...
Zachary S.C. Picker, Alexander Kusenko
doaj  

Progress in Multi-wavelength and Multi-Messenger Observations of Blazars and Theoretical Challenges

open access: yesGalaxies, 2019
This review provides an overview of recent advances in multi-wavelength and multi-messenger observations of blazars, the current status of theoretical models for blazar emission, and prospects for future facilities.
Markus Böttcher
doaj   +1 more source

On the Gamma-Ray Emission of the Andromeda Galaxy M31

open access: yesThe Astrophysical Journal Letters, 2023
Using the γ -ray data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope (Fermi) for ∼14 yr, we examine the high-energy emission emanating from the center of the Andromeda galaxy M31.
Yi Xing   +3 more
doaj   +1 more source

BL Lacertae Objects and the Extragalactic Gamma-Ray Background

open access: yes, 2011
A tight correlation between gamma-ray and radio emission is found for a sample of BL Lacertae (BL Lac) objects detected by Fermi Gamma-ray Space Telescope (Fermi) and the Energetic Gamma-Ray Experiment Telescope (EGRET).
Abdo   +39 more
core   +1 more source

Dark Matter Signals in the gamma-ray sky

open access: yesEPJ Web of Conferences, 2014
Detection of gamma rays and cosmic rays from the annihilation or decay of dark matter particles is a promising method for identifying dark matter, understanding its intrinsic properties, and mapping its distribution in the universe.
Morselli Aldo
doaj   +1 more source

15 GHz Monitoring of Gamma-ray Blazars with the OVRO 40 Meter Telescope in Support of Fermi [PDF]

open access: yes, 2009
We present results from the first two years of our fast-cadence 15 GHz gamma-ray blazar monitoring program, part of the F-GAMMA radio monitoring project.
Angelakis, E.   +14 more
core   +2 more sources

TeV Dark Matter Searches in the Extragalactic Gamma-ray Sky

open access: yesGalaxies, 2022
High-energetic gamma rays from astrophysical targets constitute a unique probe for annihilation or decay of heavy particle dark matter (DM). After several decades, diverse null detections have resulted in strong constraints for DM particle masses up to ...
Moritz Hütten, Daniel Kerszberg
doaj   +1 more source

Fermi Gamma-Ray Space Telescope [PDF]

open access: yes, 2009
This slide presentation gives an overview the Fermi Gamma-ray space telescope. It includes information on spectral fitting, useful considerations, and binned vs.
Hays, Elizabeth
core   +1 more source

Home - About - Disclaimer - Privacy