Results 41 to 50 of about 18,734,225 (295)

High-energy neutrino astrophysics: Status and perspectives [PDF]

Progress in Particle and Nuclear Physics, 2012
Neutrinos are unique cosmic messengers. Present attempts are directed to extend the window of cosmic neutrino observation from low energies (Sun, supernovae) to much higher energies. The aim is to study the most violent processes in the Universe which accelerate charged particles to highest energies, far beyond the reach of laboratory experiments on ...
Katz, U. F., Spiering, C.
openaire   +4 more sources

Discovery of gamma-ray emission from the shell-type supernova remnant RCW86 with HESS [PDF]

, 2009
The shell-type supernova remnant (SNR) RCW 86, possibly associated with the historical supernova SN 185, with its relatively large size (about 40' in diameter) and the presence of nonthermal X-rays is a promising target for γ-ray observations.
Astrophysics, Vink, J., Aharonian, F., Sub High energy Astrophysics begr 1/1/15   +3 more
core  

Investigation of Stray‐Light Patterns in the eROSITA X‐Ray Cameras

Astronomische Nachrichten, EarlyView.
ABSTRACT eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the soft X‐ray instrument aboard the Spectrum‐Roentgen‐Gamma (SRG) mission, developed under the responsibility of the Max Planck Institute for Extraterrestrial Physics (MPE).
Veronika Stieglitz, Peter Friedrich, Susanne Friedrich, Konrad Dennerl, Michael Freyberg   +4 more
wiley   +1 more source

XMM-Newton observations of HESS J1813-178 reveal a composite Supernova remnant [PDF]

, 2007
We present X-ray and 12CO(J=1-0) observations of the very-high-energy (VHE) γ-ray source HESS J1813-178 with the aim of understanding the origin of the γ-ray emission.
Funk, S., Astrophysics, Vink, J., Sub High energy Astrophysics begr 1/1/15   +3 more
core  

Unintegrated Gluon Distributions as Probability Densities for QCD Dynamical Entropy

Astronomische Nachrichten, EarlyView.
ABSTRACT We present a systematic procedure for constructing normalized transverse momentum probability distributions from phenomenological unintegrated gluon distributions (UGDs). These distributions provide the probabilistic foundation of the QCD dynamical entropy formalism and can be employed in the evaluation of other statistical observables.
G. S. Ramos, Magno V. T. Machado
wiley   +1 more source

Statistical Learning in High Energy and Astrophysics [PDF]

, 2005
This thesis studies the performance of statistical learning methods in high energy and astrophysics where they have become a standard tool in physics analysis.
Zimmermann, Jens
core   +1 more source

Action principle of Galilean relativistic Proca theory

European Physical Journal C: Particles and Fields, 2023
In this paper, we discuss Galilean relativistic Proca theory in detail. We first provide a set of mapping relations, derived systematically, that connect the covariant and contravariant vectors in the Lorentz relativistic and Galilean relativistic ...
Rabin Banerjee, Soumya Bhattacharya
doaj   +1 more source

First detection of VHE γ-rays from SN 1006 by HESS [PDF]

, 2010
Aims. Recent theoretical predictions of the lowest very high energy (VHE) luminosity of SN 1006 are only a factor 5 below the previously published HESS upper limit, thus motivating further in-depth observations of this source. Methods.
Anton, G., Astrophysics, Akhperjanian, A.G., Vink, J., Aharonian, F., Sub High energy Astrophysics begr 1/1/15, Acero, F.   +6 more
core  

Influence of Dynamical Friction on the Unstable Manifolds of Lagrange Points in Barred Galaxies

Astronomische Nachrichten, EarlyView.
ABSTRACT Some time ago the idea has been proposed that rings and spirals in barred galaxies are shaped by the unstable manifolds of the Lagrange points sitting near the ends of the bar. The topic of the present article is an investigation of whether the numerical support for this suggestion can be improved by the inclusion of dynamical friction into ...
Christof Jung
wiley   +1 more source

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source