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GrailQuest: hunting for atoms of space and time hidden in the wrinkle of Space-Time [PDF]

open access: yesExperimental Astronomy, 2021
AbstractGrailQuest(Gamma Ray Astronomy International Laboratory for QUantum Exploration of Space-Time) is a mission concept based on a constellation (hundreds/thousands) of nano/micro/small-satellites in low (or near) Earth orbits. Each satellite hosts a non-collimated array of scintillator crystals coupled with Silicon Drift Detectors with broad ...
Heino Falcke   +35 more
openaire   +8 more sources

A UNIFIED MODEL OF HIGH-ENERGY ASTROPHYSICAL PHENOMENA [PDF]

open access: yesInternational Journal of Modern Physics A, 2005
I outline a unified model of high-energy astrophysics, in which the gamma background radiation, cluster "cooling flows", gamma-ray bursts, X-ray flashes and cosmic-ray electrons and nuclei of all energies — share a common origin. The mechanism underlying these phenomena is the emission of relativistic "cannonballs" by ordinary supernovae, analogous to
A. De Rújula, A. De Rújula
openaire   +4 more sources

Lorentz violation at high energy: Concepts, phenomena, and astrophysical constraints [PDF]

open access: yesAnnals of Physics, 2006
We consider here the possibility of quantum gravity induced violation of Lorentz symmetry (LV). Even if suppressed by the inverse Planck mass such LV can be tested by current experiments and astrophysical observations. We review the effective field theory approach to describing LV, the issue of naturalness, and many phenomena characteristic of LV.
JACOBSON T   +2 more
openaire   +5 more sources

The Phenomena of High Energy Astrophysics [PDF]

open access: yesSymposium - International Astronomical Union, 2003
A brief summary of some highlights in the study of high energy astrophysical sources over the past decade is presented. It is argued that the great progress that has been made derives largely from the application of new technology to observation throughout all of the electromagnetic and other spectra and that, on this basis, the next decade should be ...
openaire   +5 more sources

HIGH ENERGY APPROACHES TO LOW ENERGY PHENOMENA IN ASTROPHYSICS [PDF]

open access: yesElectromagnetic Interactions in Nuclear and Hadron Physics, 2002
Studies in nuclear astrophysics have long been associated with long runs at small accelerators, measuring ever-decreasing cross sections as one approached (but rarely reached) the energy of reactions in stars. But in recent years pioneering studies have shown that studies at high-energy accelerators can often yield the same information, and in some ...
openaire   +3 more sources

Exentsive Air Showers and High Energy Phenomena [PDF]

open access: yes, 2010
I.- Introduction, Facts and Phenomenology.- Shower Detection Methods and Basic Event Reconstruction.- Hadronic Interactions and Cascades.- Electromagnetic Interactions and Photon-Electron Cascades.- Muon and Neutrino Interactions.- Longitudinal Development and Equal Intensity Distributions.- Depth of Shower Maximum and Elongation Rate.- Lateral ...
openaire   +2 more sources

Direct frequency comb spectroscopy of HCN to evaluate line lists. [PDF]

open access: yesFaraday Discuss, 2023
Bailey DM   +3 more
europepmc   +1 more source

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