Results 31 to 40 of about 965 (178)

High energy and high brightness laser compton backscattering gamma-ray source at IHEP

Matter and Radiation at Extremes, 2018
Based on the LINAC of BEPCII, a high-polarized, high bightness, energy-tunable, monoenergetic laser compton backscattering (LCS) gamma-ray source is under construction at IHEP. The gamma-ray energy range is from 1 MeV to 111 MeV.
Guang-Peng An, Yun-Long Chi, Yong-Le Dang, Guang-Yong Fu, Bing Guo, Yong-Sheng Huang, Chuang-Ye He, Xiang-Cheng Kong, Xiao-Fei Lan, Jia-Cai Li, Fu-Long Liu, Jin-Shui Shi, Xian-Jing Sun, Yi Wang, Jian-Li Wang, Lin Wang, Yuan-Yuan Wei, Gang Wu, Guang-Lei Xu, Xiao-Feng Xi, Guo-Jun Yang, Chun-Lei Zhang, Zhuo Zhang, Zhi-Peng Zheng, Xiao-Ding Zhang, Shao-Ping Zhang   +25 more
doaj   +1 more source

Enhancing GRB Detection: Bayesian Optimization of Triggerless Data Analysis for LHAASO-WCDA [PDF]

EPJ Web of Conferences
Gamma-Ray Bursts (GRBs) are among the universe’s most energetic events, requiring advanced methods to separate signals from background noise. The LHAASO-WCDA is well-suited for detecting very-high-energy (VHE) gamma rays, but traditional trigger-based ...
Mustofa Abdulhafiz Ahmed, Cheng Yaodong, Yao Zhiguo   +2 more
doaj   +1 more source

The Radio to GeV Afterglow of GRB 221009A

The Astrophysical Journal Letters, 2023
GRB 221009A ( z = 0.151) is one of the closest known long γ -ray bursts (GRBs). Its extreme brightness across all electromagnetic wavelengths provides an unprecedented opportunity to study a member of this still-mysterious class of transients in ...
Tanmoy Laskar, Kate D. Alexander, Raffaella Margutti, Tarraneh Eftekhari, Ryan Chornock, Edo Berger, Yvette Cendes, Anne Duerr, Daniel A. Perley, Maria Edvige Ravasio, Ryo Yamazaki, Eliot H. Ayache, Thomas Barclay, Rodolfo Barniol Duran, Shivani Bhandari, Daniel Brethauer, Collin T. Christy, Deanne L. Coppejans, Paul Duffell, Wen-fai Fong, Andreja Gomboc, Cristiano Guidorzi, Jamie A. Kennea, Shiho Kobayashi, Andrew Levan, Andrei P. Lobanov, Brian D. Metzger, Eduardo Ros, Genevieve Schroeder, P. K. G. Williams   +29 more
doaj   +1 more source

Radiobiology studies of gold nanoparticle‐enhanced radiosensitization in proton therapy

Medical Physics, Volume 53, Issue 8, August 2026.
Abstract Background Approximately 50%$\%$ of newly diagnosed cancer patients worldwide receive radiotherapy, most commonly with X‐rays. Proton therapy has emerged as a promising alternative, offering complementary advantages over conventional X‐rays due to its highly localized energy deposition at the Bragg peak, thereby reducing radiation exposure to ...
N. Fuster‐Martínez, D. H. Saucedo‐Cuberes, M. C. Jiménez‐Ramos, D. Esperante, J. M. Espino, J. Fuster, J. F. Belén‐Aguilar, L. González‐López, P. Huertas, S. Jimeno, I. Mingarro, D. Pascual, D. Suárez‐García, M. J. García‐Murria   +13 more
wiley   +1 more source

A Neutron Capture Explanation for the 10 MeV Emission Line Seen in GRB 221009A

The Astrophysical Journal Letters
The brightest ever gamma-ray burst (GRB) 221009A displays a significant emission line component around 10 MeV. As the GRB central engine is neutron rich, we propose that the emission line could be originally due to the 2.223 MeV gamma rays following ...
Jiahuan Zhu, Hua Feng, Tong Liu
doaj   +1 more source

GRB 080503: A Very Early Blue Kilonova and an Adjacent Nonthermal Radiation Component

The Astrophysical Journal, 2023
The temporal behavior of the very dim optical afterglow of GRB 080503 is at odds with the regular forward shock afterglow model and a sole kilonova component responsible for optical emission has been speculated in some literature.
Hao Zhou, Zhi-Ping Jin, Stefano Covino, Lei Lei, Yu An, Hong-Yu Gong, Yi-Zhong Fan, Da-Ming Wei   +7 more
doaj   +1 more source

Boundary‐Only Weak Deflection by Regular Black Holes, Black‐Bounces, Wormholes, and Static Quadrupolar Spacetimes

Fortschritte der Physik, Volume 74, Issue 8, August 2026.
ABSTRACT We apply the boundary‐only isothermal formulation of finite‐distance weak gravitational deflection to regular black holes, black‐bounces, traversable wormholes, non‐asymptotically flat backgrounds, and static quadrupolar spacetimes. The methodological advance is not a new value for a known bending angle.
Reggie C. Pantig, Ali Övgün
wiley   +1 more source

Massive Rocky Planets May Suppress Deep Melting

AGU Advances, Volume 7, Issue 4, August 2026.
Abstract Melting properties of silicates are critical to understanding the thermal evolution of rocky planetary interiors. In the deep mantles of massive rocky planets, post‐post‐spinel Mg2SiO4 ${\text{Mg}}_{2}{\text{SiO}}_{4}$ is potentially one of the most abundant mineral phases, yet its melting behavior remains unconstrained. Here, we determine the
Donghao Zheng, Yihang Peng, Jie Deng
wiley   +1 more source

Event Deposits Recorded Over the Past 800 kyr in IODP Hole U1433A (South China Sea): Implications of a Revised Methodology for Chronology and Paleoclimate Reconstruction

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Instantaneous event deposits such as turbidites, debrites, and slumps are common and frequently occur in marginal seas. These instantaneous deposits represent seconds to days in duration, and can therefore significantly impact age‐depth models and interpretation of paleoclimate history based on thick sedimentary sequences recovered in deep ...
Xunpeng Li, Shuang Sun, Yuwei Zhang, Ziqiang Mao, Lina Jin, Yulong Zhao, G. Ian Alsop, Zhifei Liu, Yin Lu   +8 more
wiley   +1 more source

Investigating the Leptokurtotic Nature of Low‐Latitude GNSS Scintillations With a Multiscale Approach

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract We investigate the statistical nature of Global Navigation Satellite System (GNSS) signal fluctuations through the multiscale analysis of a strong scintillation event recorded at the Ionospheric Observatory of the Luigi Broglio Space Center in Malindi, Kenya.
L. Spogli, K. Meziane, P. T. Jayachandran, E. Pica, A. Cicone, L. Alfonsi   +5 more
wiley   +1 more source