Results 131 to 140 of about 243,906 (313)

Very-high-energy gamma-ray astronomy

The European Physical Journal Special Topics, 2022
D. Bose, V. Chitnis
semanticscholar   +1 more source

Amplification of Photochemical Chiroptical Activity of Chiral Gold Nanocubes

Small, EarlyView.
“Chiral gold nanocubes (AuNCs) enable polarization‐dependent plasmonic catalysis with exceptional photochemical circular dichroism. Circularly polarized light drives hot‐electron‐induced reactions with asymmetric reaction rates, monitored via operando SERS, with photochemical g‐factors exceeding optical limits.
Shashank K. Gahlaut, Oscar Avalos‐Ovando, Ryeong Myeong Kim, Ridwan Hussein, Sabrina Juergensen, Stephanie Reich, Alexander O. Govorov, Ki Tae Nam, Ilko Bald   +8 more
wiley   +1 more source

High energy gamma ray astronomy [PDF]

High energy gamma ray astronomy has evolved with the space age. Nonexistent twenty-five years ago, there is now a general sketch of the gamma ray sky which should develop into a detailed picture with the results expected to be forthcoming over the next ...
Fichtel, Carl E.
core   +1 more source

Effect of Magnetic Anisotropy and Gradient‐Induced Dzyaloshinskii‐Moriya Interaction on the Formation of Magnetic Skyrmions

Small, EarlyView.
Magnetic force microscopy of gradient‐induced CoPt films reveals that magnetic skyrmion size and density vary with film thickness, gradient polarity, and applied magnetic field. An increased skyrmion density is observed in films exhibiting higher magnetic anisotropy.
Adam Erickson, Qihan Zhang, Hamed Vakili, Edward Schwartz, Suvechhya Lamichhane, Chaozhong Li, Boyu Li, Dongsheng Song, Guozhi Chai, Sy‐Hwang Liou, Alexey A. Kovalev, Jingsheng Chen, Abdelghani Laraoui   +12 more
wiley   +1 more source

Scientific Highlights from Observations of Active Galactic Nuclei with the MAGIC Telescope

, 2008
Since 2004, the MAGIC gamma-ray telescope has newly discovered 6 TeV blazars. The total set of 13 MAGIC-detected active galactic nuclei includes well-studied objects at other wavelengths like Markarian 501 and the giant radio galaxy M87, but also the ...
Felix A. Aharonian, Frank Rieger, null null, Robert Wagner, Werner Hofmann   +4 more
core   +1 more source

Some problems of gamma and X-ray astronomy [PDF]

, 1964
Виталий Л. Гинзбург, S.I. Syrovatskii   +1 more
openalex   +1 more source

Calculation of effective pump dose in X‐ray‐pump/X‐ray‐probe experiments

Journal of Synchrotron Radiation, EarlyView.
A scheme is proposed to calculate an effective fluence of a spatially non‐uniform pump pulse such that the observable of interest calculated with the effective fluence is very close to the volume‐integrated observable. This approach simplifies computational simulations of X‐ray irradiated solids.In pump–probe experiments on solid materials performed ...
Sebastião Antunes, Michal Stransky, Victor Tkachenko, Ichiro Inoue, Philip Heimann, Konrad J. Kapcia, Beata Ziaja   +6 more
wiley   +1 more source

Gamma-ray burst variability above 4 MeV [PDF]

The relationship between the hard X-ray and gamma ray emissions during four bursts using the anti-coincidence shields of the High Energy Astronomy Observatory 3 (HEAO 3) Gamma Ray Spectrometer is explored.
Jacobson, A. S., Ling, J. C., Mahoney, W. A., Schwartz, R. A., Wheaton, W. A.   +4 more
core   +1 more source

Maximum-entropy image processing in gamma-ray astronomy [PDF]

, 1979
John Skilling, A. W. Strong, K. Bennett
openalex   +1 more source

Gamma-ray Astronomy

, 2007
The relevance of gamma-ray astronomy to the search for the origin of the galactic and, to a lesser extent, the ultra-high-energy cosmic rays has long been recognised. The current renaissance in the TeV gamma-ray field has resulted in a wealth of new data on galactic and extragalactic particle accelerators, and almost all the new results in this field ...
openaire   +2 more sources