Results 101 to 110 of about 202,938 (348)

New direction for gamma-rays

, 2003
The origin of energetic gamma-ray bursts is still unknown. But the detection of polarization of gamma-rays provides fresh insight into the mechanism driving these powerful explosions.Comment: Nature "News & Views", RE Coburn & Boggs (astro-ph ...
A Gruzinov, DA Frail, E Costa, Eli Waxman, GJ Fishman, MV Medvedev, P Meszaros, W Coburn   +7 more
core   +1 more source

Gamma-Ray Burst Energetics [PDF]

The Astrophysical Journal, 1999
We estimate the fraction of the total energy in a Gamma-Ray Burst (GRB) that is radiated in photons during the main burst. Random internal collisions among different shells limit the efficiency for converting bulk kinetic energy to photons. About 1% of the energy of explosion is converted to radiation, in 10-1000 kev energy band in the observer frame ...
openaire   +2 more sources

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Investigation of the structure in 235U(nth,fis) prompt gamma energy spectrum by FIFRELIN [PDF]

EPJ Web of Conferences
The energy spectrum of prompt gamma-rays from 235U thermal fission is reproduced by a fission reaction model FIFRELIN to identify the origin of spectral features.
Ogawa Tatsuhiko, Litaize Olivier, Mancusi Davide, Chebboubi Abdelhazize, Serot Olivier   +4 more
doaj   +1 more source

News from Cosmic Gamma-ray Line Observations

, 2016
The measurement of gamma rays at MeV energies from cosmic radioactivities is one of the key tools for nuclear astrophysics, in its study of nuclear reactions and how they shape objects such as massive stars and supernova explosions.
Diehl R., Diehl R.
core   +1 more source

Supporting information for the paper: The temporal relationship between Terrestrial Gamma-ray flashes and associated optical pulses from lightning

, 2022
Chris Alexander Skeie
openalex   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Results of 15 yr Pulsar Timing of PSR J0007+7303 with Fermi-LAT

The Astrophysical Journal
The study of pulsar glitches provides a unique window into the internal structure and dynamic processes of neutron stars. PSR J0007+7303, a very bright gamma-ray pulsar, is the first pulsar discovered by the Fermi–Large Area Telescope (LAT) telescope. In
Zhi-xiang Yu, Shi-jun Dang, Wei-hua Wang, Hui-hui Wang, Lin Li, Wei Li, Jian-ping Yuan, Fei-fei Kou, Jun-tao Bai, Mingyu Ge, Xia Zhou, Lun-hua Shang, Zu-rong Zhou, Yu-bin Wang, Yan-qing Cai, Ru-shuang Zhao, Qing-ying Li, Xiang-dong Zeng, Na Wang   +18 more
doaj   +1 more source

Effect of degenerate particles on internal bremsstrahlung of Majorana dark matter

Physics Letters B, 2015
Gamma-rays induced by annihilation or decay of dark matter can be its smoking gun signature. In particular, gamma-rays generated by internal bremsstrahlung of Majorana and real scalar dark matter is promising since it can be a leading emission of sharp ...
Hiroshi Okada, Takashi Toma
doaj   +1 more source

Electromagnetic cascade masquerade: a way to mimic $\gamma$--axion-like particle mixing effects in blazar spectra

, 2017
Context. Most of the studies on extragalactic {\gamma}-ray propagation performed up to now only accounted for primary gamma-ray absorption and adiabatic losses ("absorption-only model").
Dzhatdoev, T. A., Khalikov, E. V., Kircheva, A. P., Lyukshin, A. A.   +3 more
core   +1 more source