Results 71 to 80 of about 2,741,953 (182)
arXiv, 2009 I discuss the scientific rationale and opportunities in the study of high energy particle accelerators away from the Earth; mostly, those outside the Solar System. I also briefly outline the features to be desired in telescopes used to probe accelerators studied by remote sensing.
arxiv
Fundamental Physics With Cosmic High-Energy Gamma Rays [PDF]
, 2016 High-energy photons (above the MeV) are a powerful probe for astrophysics and for fundamental physics under extreme conditions. During the recent years, our knowledge of the high-energy gamma-ray sky has impressively progressed thanks to the advent of new detectors for cosmic gamma rays, at ground (H.E.S.S., MAGIC, VERITAS, HAWC) and in space (AGILE ...
arxiv +1 more source
GalaxiesThe development of multimessenger astrophysics allows us to probe various background particles from the distant early universe. Up to now, much effort has been made researching the emission and radiation of diverse steady or transient astrophysical ...
Fangsheng Min, Hong Lu, Yiqing Guo
doaj +1 more source
Highlights from the 7 year High Energy Starting Event sample in Icecube [PDF]
arXiv, 2019 Here we outline the main highlights from the 7 year High Energy Starting Events (HESE) event sample. The next new physics search using astrophysical neutrino flavor data is described, where we reach the Planck scale for the first time.
arxiv
Chaos in charged AdS black hole extended phase space
Physics Letters B, 2018 We present an analytical study of chaos in a charged black hole in the extended phase space in the context of the Poincare–Melnikov theory. Along with some background on dynamical systems, we compute the relevant Melnikov function and find its zeros ...
M. Chabab +4 more
doaj
Progress of GECAM Observation Research
Kongjian kexue xuebaoGravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a constellation with four instruments (launch date): GECAM-A/B (10 December 2020), GECAM-C (27 July 2022) and GECAM-D (13 March 2024), which are dedicated to monitoring
WANG Chenwei +10 more
doaj +1 more source
arXiv, 2016 We summarize the progress in neutrino astrophysics and emphasize open issues in our understanding of neutrino flavor conversion in media. We discuss solar neutrinos, core-collapse supernova neutrinos and conclude with ultra-high energy neutrinos.
arxiv
What do we know about cosmography
European Physical Journal C: Particles and Fields, 2017 In the present paper, we investigate the cosmographic problem using the bias–variance trade-off. We find that both the z-redshift and the $$y=z/(1+z)$$ y = z / ( 1 + z ) -redshift can present a small bias estimation.
Ming-Jian Zhang, Hong Li, Jun-Qing Xia
doaj +1 more source
Deformed Lorentz Symmetry and High-Energy Astrophysics (I) [PDF]
arXiv, 2000 An updated discussion of Lorentz symmetry violation in particle physics at very high energy is presented, focusing on applications of models of deformed Lorentz symmetry to high-energy astrophysics.
arxiv