Results 61 to 70 of about 419,552 (318)
Cassini ISS mutual event astrometry of the mid-sized Saturnian satellites 2005-2012 [PDF]
, 2014 Reproduced with permission from Astronomy & Astrophysics ...
Acton +19 more
core +3 more sources
Advanced Photonics Research, EarlyView.Electron acceleration using multipetawatt femtosecond lasers and subcritical density plasmas achieves a maximum charge of 245 nC, with an injection rate of up to 100 nC per picosecond. The charge variation with plasma density, initially increasing and then decreasing, arises from the competition between the injection of multiple plasma waves and laser ...
Xi‐Chen Hu +9 more
wiley +1 more source
Nuclear astrophysics studies with ultra-peripheral heavy-ion collisions
, 2009 I describe in very simple terms the theoretical tools needed to investigate ultra-peripheral nuclear reactions for nuclear astrophysics purposes. For a more detailed account, see arXiv:0908.4307.Comment: 12 pages, 8 figures, Lecture notes presented at ...
Bertulani, C. A.
core +1 more source
Future X-ray timing missions [PDF]
, 2000 Thanks to the Rossi X-ray Timing Explorer (RXTE), it is now widely recognized that fast X-ray timing can be used to probe strong gravity fields around collapsed objects and constrain the equation of state of dense matter in neutron stars.
A Alpar +18 more
core +6 more sources
A Periodic Error Correction Method for Terahertz Coded‐Aperture Imaging
Advanced Intelligent Systems, EarlyView.A physics‐constrained unsupervised learning framework with periodic error correction is proposed for terahertz coded‐aperture imaging. The method improves reconstruction robustness against noise and model mismatch, while reducing reliance on large‐scale labeled data.
Hongxu Wu +8 more
wiley +1 more source
INTEGRAL and Nuclear Astrophysics [PDF]
, 2001 We briefly review the fundamentals of nuclear gamma-ray line astronomy (radioactive astronomy), focusing on its role to decipher the intimate physics of supernovae, either immediatly (via $^{56}Co)$ or after a time delay (via $^{44}Ti$).
Casse, Michel +2 more
core +2 more sources
Artificial Intelligence‐Assisted Target Design for High‐Intensity Laser‐Driven Neutron Sources
Advanced Intelligent Systems, EarlyView.This study presents an artificial intelligence (AI)‐assisted target design that combines particle‐in‐cell simulations with gradient ascent algorithm to optimize laser‐driven neutron sources. By enhancing the sheath electric field, the optimized structure increases neutron yield by a factor of 4,000.
Youjing Wang +7 more
wiley +1 more source
Challenges of Relativistic Astrophysics
, 2013 I discuss some of the most outstanding challenges in relativistic astrophysics in the subjects of: compact objects (Black Holes and Neutron Stars); dark sector (Dark Matter and Dark Energy); plasma astrophysics (Origin of Jets, Cosmic Rays and Magnetic ...
Opher, Reuven
core +1 more source
Black Holes in Astrophysics [PDF]
, 2005 This article reviews the current status of black hole astrophysics, focusing on topics of interest to a physics audience. Astronomers have discovered dozens of compact objects with masses greater than 3 solar masses, the likely maximum mass of a neutron ...
Narayan, Ramesh
core +3 more sources
Chiral Matter, 2023 Chirality, or handedness, enters astrophysics in three distinct ways. Magnetic field and vortex lines tend to be helical and have a systematic twist in the northern and southern hemispheres of a star or a galaxy. Helicity is here driven by external factors.
openaire +2 more sources