Detection of Sub-TeV gamma-rays from the Galactic Center with the CANGAROO-II telescope

2005 ◽  
Author(s):  
Ken’ichi Tsuchiya
Keyword(s):  
Gamma Rays ◽  
Galactic Center ◽  
Tev Gamma Rays

scholarly journals TeV gamma rays from Galactic Center pulsars

2018 ◽  
Vol 21 ◽  
pp. 40-46 ◽  
Author(s):  
Dan Hooper ◽  
Ilias Cholis ◽  
Tim Linden
Keyword(s):  
Gamma Rays ◽  
Galactic Center ◽  
Tev Gamma Rays

scholarly journals Detection of Sub-TeV Gamma Rays from the Galactic Center Direction by CANGAROO-II

2004 ◽  
Vol 606 (2) ◽  
pp. L115-L118 ◽  
Author(s):  
K. Tsuchiya ◽  
R. Enomoto ◽  
L. T. Ksenofontov ◽  
M. Mori ◽  
T. Naito ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Galactic Center ◽  
Tev Gamma Rays

scholarly journals The AGASA and SUGAR Anisotropies and TeV Gamma Rays from the Galactic Center: A Possible Signature of Extremely High Energy Neutrons

2005 ◽  
Vol 622 (2) ◽  
pp. 892-909 ◽  
Author(s):  
Roland M. Crocker ◽  
Marco Fatuzzo ◽  
J. R. Jokipii ◽  
Fulvio Melia ◽  
Raymond R. Volkas
Keyword(s):  
Gamma Rays ◽  
Galactic Center ◽  
High Energy ◽  
Tev Gamma Rays

scholarly journals On a Possible Origin of the Gamma-ray Excess around the Galactic Center

Symmetry ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1432
Author(s):  
Dmitry O. Chernyshov ◽  
Andrei E. Egorov ◽  
Vladimir A. Dogiel ◽  
Alexei V. Ivlev
Keyword(s):  
Dark Matter ◽  
Gamma Rays ◽  
Molecular Clouds ◽  
Alternative Explanation ◽  
Gamma Ray ◽  
Galactic Center ◽  
The Self ◽  
Large Area ◽  
Mhd Turbulence ◽  
The Standard Model

Recent observations of gamma rays with the Fermi Large Area Telescope (LAT) in the direction of the inner galaxy revealed a mysterious excess of GeV. Its intensity is significantly above predictions of the standard model of cosmic rays (CRs) generation and propagation with a peak in the spectrum around a few GeV. Popular interpretations of this excess are that it is due to either spherically distributed annihilating dark matter (DM) or an abnormal population of millisecond pulsars. We suggest an alternative explanation of the excess through the CR interactions with molecular clouds in the Galactic Center (GC) region. We assumed that the excess could be imitated by the emission of molecular clouds with depleted density of CRs with energies below ∼10 GeV inside. A novelty of our work is in detailed elaboration of the depletion mechanism of CRs with the mentioned energies through the “barrier” near the cloud edge formed by the self-excited MHD turbulence. This depletion of CRs inside the clouds may be a reason for the deficit of gamma rays from the Central Molecular Zone (CMZ) at energies below a few GeV. This in turn changes the ratio between various emission components at those energies and may potentially absorb the GeV excess by a simple renormalization of key components.

Search for TeV Gamma-Rays from 3EG J1234-1318 with the Cangaroo-II Telescope

2005 ◽  
Vol 297 (1-4) ◽  
pp. 327-334 ◽  
Author(s):  
Takahiro Hattori ◽  
Kyoshi Nishijima
Keyword(s):  
Gamma Rays ◽  
Tev Gamma Rays
Sign in / Sign up

Export Citation Format

Share Document