Results 91 to 100 of about 11,249 (249)
Pulsar Wind Nebulae in the Chandra Era [PDF]
AIP Conference Proceedings, 2008 Pulsar winds shocked in the ambient medium produce spectacular nebulae observable from the radio through gamma-rays. The shape and the spectrum of a pulsar wind nebula (PWN) depend on the angular distribution, magnetization and energy spectrum of the wind streaming from the pulsar magnetosphere, as well as on the pulsar velocity and the properties of ...
O. Kargaltsev +5 more
openaire +4 more sources
Pulsar‐Driven Jets in Supernovae, Gamma‐Ray Bursts, and the Universe
Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012 The bipolarity of Supernova 1987A can be understood through its very early light curve from the CTIO 0.4 m telescope and IUE FES and following speckle observations of the “Mystery Spot”. These indicate a beam/jet of light/particles, with initial collimation factors >104 and velocities >0.95 c, involving up to 10−5 M⊙ interacting with circumstellar ...
John Middleditch +1 more
wiley +1 more source
The emerging population of pulsar wind nebulae in hard X-rays
, 2009 The hard X-ray synchrotron emission from pulsar wind nebulae (PWNe) probes energetic particles, closely related to the pulsar injection power at the present time. INTEGRAL has disclosed the yet poorly known population of hard X-ray pulsar/PWN systems. We
D. Götz +6 more
core +1 more source
Focusing X‐Ray Optics for Astronomy
X-Ray Optics and Instrumentation, Volume 2010, Issue 1, 2010., 2010 Focusing X‐ray telescopes have been the most important factor in X‐ray astronomy’s ascent to equality with optical and radio astronomy. They are the prime tool for studying thermal emission from very high temperature regions, non‐thermal synchrotron radiation from very high energy particles in magnetic fields and inverse Compton scattering of lower ...
Paul Gorenstein, Stephen L. O′Dell
wiley +1 more source
Heavy Elements and Electromagnetic Transients from Neutron Star Mergers
Annalen der Physik, Volume 536, Issue 2, February 2024.Astro‐(physics) has made major leaps forward through the combined information provided by both gravitational waves and electromagnetic emission from the first detected neutron star merger event. This review provides an up‐to‐date overview of today's understanding of neutron star mergers and their electromagnetic emission and it discusses possible ...
Stephan Rosswog, Oleg Korobkin
wiley +1 more source
The Dark Matter Annihilation Signal from Dwarf Galaxies and Subhalos
Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010 Dark Matter annihilation holds great potential for directly probing the clumpiness of the Galactic halo that is one of the key predictions of the Cold Dark Matter paradigm of hierarchical structure formation. Here we review the γ‐ray signal arising from dark matter annihilation in the centers of Galactic subhalos.
Michael Kuhlen, Andrey V. Kravtsov
wiley +1 more source
Pulsar Wind Nebulae with Thick Toroidal Structure
, 2011 We investigate a class of pulsar wind nebulae that show synchrotron emission from a thick toroidal structure. The best studied such object is the small radio and X-ray nebula around the Vela pulsar, which can be interpreted as the result of interaction ...
Abdo +19 more
core +1 more source
TIME-DEPENDENT MODELING OF PULSAR WIND NEBULAE [PDF]
The Astrophysical Journal, 2013 A spatially independent model that calculates the time evolution of the electron spectrum in a spherically expanding pulsar wind nebula (PWN) is presented, allowing one to make broadband predictions for the PWN's non-thermal radiation. The source spectrum of electrons injected at the termination shock of the PWN is chosen to be a broken power law.
Vorster, M. +3 more
openaire +7 more sources
Laue Gamma‐Ray Lenses for Space Astrophysics: Status and Prospects
X-Ray Optics and Instrumentation, Volume 2010, Issue 1, 2010., 2010 We review feasibility studies, technological developments, and the astrophysical prospects for Laue lenses devoted to hard X‐/gamma‐ray astronomy observations.
Filippo Frontera +2 more
wiley +1 more source
Astronomy & Astrophysics, 2021 Aims. Nonthermal radiation properties of pulsar wind nebulae (PWNe) are studied in the frame of a time-dependent model with particle advection and di ff usion. Methods.
Bo-Tao Zhu, F. Lu, B. Zhou, L. Zhang
semanticscholar +1 more source