Results 41 to 50 of about 878 (215)
Theory of Pulsar Wind Nebulae [PDF]
AIP Conference Proceedings, 2008 Our understanding of Pulsar Wind Nebulae (PWNe), has greatly improved in the last years thanks to unprecedented high resolution images taken from the HUBBLE, CHANDRA and XMM satellites. The discovery of complex but similar inner features, with the presence of unexpected axisymmetric rings and jets, has prompted a new investigation into the dynamics of ...
Cumming, A. +5 more
openaire +2 more sources
Pulsar wind nebulae in supernova remnants
Astronomy and Astrophysics, 2000 10 pages, 9 figures, submitted to Astronomy and ...
van der Swaluw, E. +3 more
openaire +3 more sources
Impact of Cosmic‐Ray Physics on Dark Matter Indirect Searches
Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018 The quest for the elusive dark matter (DM) that permeates the Universe (and in general the search for signatures of physics beyond the Standard Model at astronomical scales) provides a unique opportunity and a tough challenge to the high energy astrophysics community.
Daniele Gaggero +2 more
wiley +1 more source
The Observer’s Guide to the Gamma‐Ray Burst Supernova Connection
Advances in Astronomy, Volume 2017, Issue 1, 2017., 2017 We present a detailed report of the connection between long‐duration gamma‐ray bursts (GRBs) and their accompanying supernovae (SNe). The discussion presented here places emphasis on how observations, and the modelling of observations, have constrained what we know about GRB‐SNe.
Zach Cano +4 more
wiley +1 more source
Neutral Atmospheric Density Measurement Using Insight-HXMT Data by the Earth Occultation Technique
The Astrophysical Journal Supplement Series, 2022 The Earth occultation technique has broad applications in both astronomy and atmospheric density measurements. We construct the background model during the occultation of the Crab Nebula observed by the Insight-Hard X-ray Modulation Telescope (Insight ...
Wang-Chen Xue +14 more
doaj +1 more source
Diverse Features of the Multiwavelength Afterglows of Gamma‐Ray Bursts: Natural or Special?
Advances in Astronomy, Volume 2016, Issue 1, 2016., 2016 The detection of optical rebrightenings and X‐ray plateaus in the afterglows of gamma‐ray bursts (GRBs) challenges the generic external shock model. Recently, we have developed a numerical method to calculate the dynamics of the system consisting of a forward shock and a reverse shock.
J. J. Geng, Y. F. Huang, WeiKang Zheng
wiley +1 more source
X‐Ray Pulsar Profile Recovery Based on Tracking‐Differentiator
Mathematical Problems in Engineering, Volume 2016, Issue 1, 2016., 2016 The profile recovery is an important work in X‐ray pulsar‐based navigation. It is a key step for the analysis on the pulsar signal’s characteristic and the computing of time of arrival (TOA). This paper makes an argument for an algorithm based on the tracking‐differentiator (TD) to recover the profile from the low Signal‐to‐Noise Ratio (SNR) signals ...
Dapeng Zhang +4 more
wiley +1 more source
Astronomical Signatures of Dark Matter
Advances in High Energy Physics, Volume 2014, Issue 1, 2014., 2014 Several independent astronomical observations in different wavelength bands reveal the existence of much larger quantities of matter than what we would deduce from assuming a solar mass to light ratio. They are very high velocities of individual galaxies within clusters of galaxies, higher than expected rotation rates of stars in the outer regions of ...
Paul Gorenstein +2 more
wiley +1 more source
Turbulent Magnetic Relaxation in Pulsar Wind Nebulae [PDF]
The Astrophysical Journal, 2017 Abstract We present a model for magnetic energy dissipation in a pulsar wind nebula. A better understanding of this process is required to assess the likelihood that certain astrophysical transients may be powered by the spin-down of a “millisecond magnetar.” Examples include superluminous supernovae, gamma-ray bursts, and anticipated ...
Jonathan Zrake, Jonathan Arons
openaire +2 more sources
Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012 Core‐collapse supernovae are dramatic explosions marking the catastrophic end of massive stars. The only means to get direct information about the supernova engine is from observations of neutrinos emitted by the forming neutron star, and through gravitational waves which are produced when the hydrodynamic flow or the neutrino flux is not perfectly ...
Kei Kotake +7 more
wiley +1 more source