Results 141 to 150 of about 243,781 (346)

GAMMA-RAY BURSTS ARE OBSERVED OFF-AXIS [PDF]

, 2014
We constrain the jet opening angle and, for the first time, the off-axis observer angle for gamma-ray bursts in the Swift-XRT catalog by using the ScaleFit package to fit afterglow light curves directly to hydrodynamic simulations.
G. Ryan, H. van Eerten, A. MacFadyen, Bin-Bin Zhang   +3 more
semanticscholar   +1 more source

Constructing Large‐Area Oriented Covalent Organic Framework Based PN Heterostructure Films to Enhance Artificial Photosynthesis of H2O2

Angewandte Chemie, EarlyView.
We propose for the first time the concept of organic‐inorganic hybrid oriented PN heterostructured films to modulate the photocatalytic performance by constructing COF‐based PN heterostructured films, and our mechanistic studies confirm that oriented TAPB‐DMTA COFs based on thin films of PN heterostructures can provide the driving force to enhance the ...
Minghui Liu, Yachao Xu, Youxing Liu, Shengcong Shang, Wenqiang Gao, Xinyu Wang, Jiaxin Hong, Helin Xu, Chunyu Hua, Zewen You, Zhixia Zhou, Shaojun Guo, Yunqi Liu, Jianyi Chen   +13 more
wiley   +2 more sources

Radio‐Activated Selenium‐Doped Janus Ag/Ag2SexSy Nanoparticles for Precise Cancer NIR‐II Fluorescence Imaging and Radiosensitization Therapy

Advanced Science, EarlyView.
A new kind of selenium‐doped Ag/Ag2S Janus nanoparticles (Ag/Ag2SexSy JNPs) is reported as radio‐responsive probes for specifically hydrogen peroxide (H2O2)‐activated cancer imaging and enhanced radiosensitization, offering a promising approach for precision cancer theranostics.
Kang Zhu, Zhanyuan Li, Jingjing Cao, Yixi Cao, Jimei Wang, Shiyu Wang, Ling Chen, Huiqin Zhou, Wei Huang, Hanxun Zou, Qunsheng Li, Jing Mu, Jibin Song   +12 more
wiley   +1 more source

Significant Cocoon Emission and Photosphere Duration Stretching in GRB 211211A: A Burst from a Neutron Star−Black Hole Merger

The Astrophysical Journal
The radiation mechanism (thermal photosphere or magnetic synchrotron) and the progenitor of gamma-ray bursts (GRBs) are under hot debate. Recently discovered, the prompt long-duration (∼10 s, normally from the collapse of massive stars) property of GRB ...
Yan-Zhi Meng, Xiangyu Ivy Wang, Zi-Ke Liu   +2 more
doaj   +1 more source

A NOVEL PARADIGM FOR SHORT GAMMA-RAY BURSTS WITH EXTENDED X-RAY EMISSION [PDF]

, 2014
The merger of a binary of neutron stars provides natural explanations for many of the features of short gamma-ray bursts (SGRBs), such as the generation of a hot torus orbiting a rapidly rotating black hole, which can then build a magnetic jet and ...
L. Rezzolla, Pawan Kumar
semanticscholar   +1 more source

Goddard Space Flight Center contributions to the University of California, Santa Cruz Summer Workshop on High Energy Transients [PDF]

Topics addressing the characteristics and emission mechanisms of gamma ray bursts and neutron and gamma ray emission from solar flares are discussed. In addition, observational aspects of gamma ray astronomy are addressed with particular attention given ...

core   +1 more source

Single Cu Atoms Anchored Energetic COFs as Combustion Catalytic Promoters toward Rapid and Concentrated Thermal Decomposition of Ammonium Perchlorate

Advanced Science, EarlyView.
Introducing energetic Cu‐based metal salts into the covalent organic frameworks (COFs) structure, Cu is in single‐atom form anchored to the framework, with energetic anions confined in the COFs structure. The synergistic interaction between single Cu atoms and the anions accelerates the reaction kinetics of ammonium perchlorate (AP) decomposition ...
Meng Zhang, Shan Wang, Xu‐Yang Wang, Zhi‐Peng Wu, Bai‐Suo Ding, Li Yang, Wen‐Chao Tong, Qinglang Ma, Qian‐You Wang   +8 more
wiley   +1 more source

Contribution of γ-Ray Burst Afterglow Emissions to the Isotropic Diffuse γ-Ray Background

The Astrophysical Journal
The isotropic diffuse γ -ray background (IGRB) serves as a fundamental probe of the evolution of the extreme Universe. Although various astrophysical sources have been proposed as potential contributors to the IGRB, the dominant population is still under
Fang-Sheng Min, Yu-Hua Yao, Ruo-Yu Liu, Shi Chen, Hong Lu, Yi-Qing Guo   +5 more
doaj   +1 more source

Reverse Shock Emission from Short GRBs

Galaxies, 2018
We investigate the expected radio emission from the reverse shock of short GRBs, using the fitted afterglow parameters. In light of recent results suggesting that in some cases the radio afterglow is due to emission from the reverse shock, we examine the
Nicole Lloyd-Ronning
doaj   +1 more source

A wind environment and Lorentz factors of tens explain gamma-ray bursts X-ray plateau. [PDF]

Nat Commun, 2022
Dereli-Bégué H, Pe'er A, Ryde F, Oates SR, Zhang B, Dainotti MG.   +5 more
europepmc   +1 more source