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The Search For Pulsar Wind Nebulae in the Very High Energy Gamma-ray Regime [PDF]
, 2010 The aim of this Thesis is to study the development of pulsar wind nebulae in the TeV regime and in doing so uncover more sources which have as yet not been observed at these wavelengths.
KEOGH, DOMINIC,ROBERT +1 more
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Dark Matter Signals in the gamma-ray sky
EPJ 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
Advanced Optical Materials, Volume 14, Issue 10, 13 March 2026.An optimized RF‐sputtering process is developed for the deposition of n‐doped germanium thin films exhibiting strongly enhanced THz emission under fs‐laser excitation. By tuning deposition temperature and thickness, highly (111)‐oriented films with an effective bandgap of ∼0.77 eV and improved optoelectronic properties are achieved, leading to a ∼35 ...
Sanjit Varma +7 more
wiley +1 more source
Gamma rays, electrons and positrons up to 3 TeV with the Fermi Gamma-ray Space Telescope [PDF]
Journal of Physics: Conference Series, 2012 Presented at the XVth International Conference on Calorimetry in High Energy Physics (CALOR 2012), Santa Fe, New Mexico, USA, June 4-8 2012. The proceedings will be published in Journal of Physics: Conference Series.
openaire +2 more sources
Upper limit on the axion-photon coupling from Markarian 421
Physics Letters BMarkarian421 is a well-known nearby BL Lac blazar at the redshift z=0.031. Many previous works were investigated to constrain the axion-photon coupling from its TeV gamma-ray observations, showing the upper limit on the coupling constant gaγ≲2.0×10−11GeV−
Hai-Jun Li, Wei Chao, Yu-Feng Zhou
doaj +1 more source
Cherenkov Telescope Array Observatory: Die Zukunft der Gammaastronomie
Physik in unserer Zeit, Volume 57, Issue 1, Page 10-18, January 2026.Im Jahr 1989 hat das Wipple‐Observatorium die erste Quelle hochenergetischer Gammastrahlung entdeckt. 2002 waren dann sechs Quellen bekannt, 2024 schon mehr als 300. Und das ist immer noch lediglich die Spitze des Eisbergs in der jungen Geschichte der Gammaastronomie.
Daniela Hadasch, Daniel Mazin
wiley +1 more source
Gamma ray Cerenkov telescope image analysis [PDF]
, 1997 The subject of this thesis is ground based gamma ray astronomy using the imaging atmospheric Cerenkov technique. The first two chapters are introductory, and describe the field of gamma ray astronomy, the generation of extensive air showers in the ...
Holder, J., Holder, Jamie
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Fermi status and physics [PDF]
, 2009 The Fermi Gamma-Ray Space Telescope is a satellite-based observatory that explores the gamma-ray sky in a wide energy range from a few keV to more than 300 GeV, allowing the investigation of many fields of gamma ray astrophysics.
the Fermi Collaboration, N. Giglietto
core +1 more source
Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.Abstract On 9 October 2022, a powerful gamma ray burst (GRB), GRB221009A, caused significant changes in the electron density of the lower ionosphere, as evidenced by VLF (3–30 kHz) radio wave observations. However, GRB221009A did not yield any observable signatures at the Schumann resonances (∼8, ∼14 Hz), which are also sensitive to the lower ...
M. Gołkowski +8 more
wiley +1 more source
The effects of atmosphere conditions on gamma-ray astronomy [PDF]
, 2005 The High Energetic Stereoscopic System (H.E.S.S.) experiment is an array of imaging atmospheric Cherenkov (IAC) telescopes of the next generation, with enlarged mirrors and advanced detector electronics compared to its predecessors.
Aye, Klaus-Michael
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