Results 51 to 60 of about 220,311 (341)
npj Materials Degradation, 2023 Many polymer-based medical devices are sterilized by gamma irradiation. To reduce the use of cobalt-60 gamma-ray sources, transition from gamma ray to alternative irradiation technologies was proposed, namely electron beam (e-beam) and X-ray.
Yelin Ni +13 more
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Is Gamma-Ray Burst 221009A Really a Once-in-10,000 yr Event?
The Astrophysical JournalGamma-ray bursts (GRBs) brighter than the GRB 221009A, the brightest yet observed, have previously been estimated to occur at a rate of one per 10,000 yr, based on the extrapolation of the distribution of fluences of the long-GRB population. We show that
Justin D. Finke, Soebur Razzaque
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The extragalactic gamma-ray sky: A view on the most powerful phenomena in the universe
Mètode Science Studies Journal: Annual Review, 2017 The gamma-ray sky provides a look into the most energetic and violent processes of the universe. In the last years, gamma-ray satellites are scanning the sky for understanding the physics governing the gamma-ray emission.
Monica Orienti
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Identifying the Gamma-Ray Emission of the Nearby Galaxy M83
The Astrophysical Journal, 2023 We report on the detection of a γ -ray source at the position of the nearby star-forming galaxy (SFG) M83, which is found from our analysis of 14 yr of the data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope (Fermi ...
Yi Xing, Zhongxiang Wang
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All-optical Compton gamma-ray source [PDF]
Nature Photonics, 2012 One of the major goals of research for laser-plasma accelerators is the realization of compact sources of femtosecond X-rays. In particular, using the modest electron energies obtained with existing laser systems, Compton scattering a photon beam off a relativistic electron bunch has been proposed as a source of high-energy and high-brightness photons.
Ta Phuoc, Kim +8 more
openaire +5 more sources
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Cardiac motion may degrade dose distribution during stereotactic arrhythmia radioablation using the CyberKnife system, a robotic radiosurgery system. This study evaluated the dose distribution changes using a self‐made cardiac dynamic platform that mimics cardiac motion. Methods The cardiac dynamic platform was operated with amplitudes
Takayuki Miyachi +6 more
wiley +1 more source
On the Gamma-Ray Emission of the Andromeda Galaxy M31
The 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
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Redshifts from Spitzer Spectra for Optically Faint, Radio Selected Infrared Sources [PDF]
Astrophys.J.638:613-621,2006, 2005 Spectra have been obtained with the Infrared Spectrograph on the Spitzer Space Telescope for 18 optically faint sources (R > 23.9,mag) having f(nu) (24um) > 1.0,mJy and having radio detections at 20 cm to a limit of 115 microJy. Sources are within the Spitzer First Look Survey.
arxiv +1 more source
Microquasars as High-energy Gamma-ray Sources [PDF]
Chinese Journal of Astronomy and Astrophysics, 2005 Invited talk presented at the V Microquasar Workshop, Beijing, June 2004. Accepted for publication in the Chinese Journal of Astronomy and Astrophysics.
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Is the Stellar System WR 11 a Gamma-Ray Source? [PDF]
Publications of the Astronomical Society of Australia, 2016 AbstractMany early-type stars are in systems; some of them have been indicated as putative high-energy emitters. The radiation would be produced at the region where two stellar winds collide. Compelling evidence of such emission was found only for the colliding-wind binary (CWB) Eta Car, which was associated to a GeV source.
Benaglia, Paula, Benaglia, Paula
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