Results 81 to 90 of about 61,814 (221)
AMS-02 Results Support the Secondary Origin of Cosmic Ray Positrons [PDF]
Physical Review Letters, 2013 6 pages, 7 figures.
Blum, Kfir, Katz, Boaz, Waxman, Eli
openaire +3 more sources
Unraveling the active site cover of coproheme decarboxylase from Listeria monocytogenes
The FEBS Journal, EarlyView.During heme biosynthesis in Gram‐positive bacteria, coproheme decarboxylase (ChdC) catalyzes the conversion of four‐propionate substrate coproheme to the two propionate product heme b. Its active site is universally covered by a flexible linking loop. This study identifies an important histidine residue, which stabilizes the loop in a ChdC homolog.
Nikolaus Falb +4 more
wiley +1 more source
Palamism Does Not Disfigure the Gospel: A Reply to Thomas Weinandy
International Journal of Systematic Theology, EarlyView.Abstract In a 2024 article in the IJST, Fr. Thomas Weinandy argues that the theological system of Gregory Palamas is in grave error, especially with respect to its commitment to an objective ontological distinction between God's essence and His energies. In his concluding paragraph Fr.
Travis Dumsday
wiley +1 more source
HESS J1809-193: Gamma-Ray Emission by Cosmic Rays from a Past Explosion
The Astrophysical JournalThe very-high-energy γ -ray source HESS J1809-193 has been detected by the LHAASO and HAWC observatory beyond 100 TeV energy. It is an interesting candidate for exploring the underlying mechanisms of γ -ray production due to the presence of supernova ...
Sovan Boxi, Nayantara Gupta
doaj +1 more source
$e^+$ and $\bar{p}$ production in $pp$ collisions and the cosmic-ray $e^+/\bar{p}$ flux ratio
, 2017 Secondary astrophysical production of $e^+$ and $\bar{p}$ cosmic rays is considered. Inclusive $\pi$, $K$, and $\bar{p}$ production cross sections in $pp$ collisions at large $\sqrt{s}$ are parametrised using recent experimental data at LHC energies. The
Blum, Kfir +2 more
core +1 more source
International Journal of Systematic Theology, EarlyView.Abstract Dionysius's vision of eros as a meeting of reciprocal ecstasies – where lover and beloved each pass out of themselves and into the other – has often been read as unifying dimensions of love otherwise thought to stand in tension, such as giving and receiving.
Noah Karger
wiley +1 more source
Gamma Ray Astronomy with Magnetized Zevatrons
, 2005 Nearby sources of cosmic rays up to a ZeV(=10^21 eV) could be observed with a multi-messenger approach including secondary gamma-rays and neutrinos. If cosmic rays above ~10^18 eV are produced in magnetized environments such as galaxy clusters, the flux ...
Armengaud, Eric +2 more
core +1 more source
The origin of the positron excess in cosmic rays
, 2009 We show that the positron excess measured by the PAMELA experiment in the region between 10 and 100 GeV may well be a natural consequence of the standard scenario for the origin of Galactic cosmic rays. The 'excess' arises because of positrons created as
A. R. Bell, Pasquale Blasi, S. Coutu
core +1 more source
Noble gases and nitrogen in material from asteroid Bennu
Meteoritics &Planetary Science, EarlyView.Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty +7 more
wiley +1 more source
Neutrino Telescopes and High-Energy Cosmic Neutrinos
Universe, 2020 In this review paper, we present the main aspects of high-energy cosmic neutrino astrophysics. We begin by describing the generic expectations for cosmic neutrinos, including the effects of propagation from their sources to the detectors.
Andrea Palladino +2 more
doaj +1 more source