Results 141 to 150 of about 11,249 (249)

A Catalog of Diffuse X-ray-Emitting Features within 20 pc of Sgr A*: Twenty Pulsar Wind Nebulae?

open access: yes, 2007
We present a catalog of 34 diffuse features identified in X-ray images of the Galactic center taken with the Chandra X-ray Observatory. Several of the features have been discussed in the literature previously, including 7 that are associated with a ...
Becker W.   +9 more
core   +1 more source

Spatially Resolved Polarization Variation of the Crab Nebula

open access: yesThe Astrophysical Journal
We examined the spatially resolved polarization variations in the Crab Nebula over 2 yr, using observational data from the Imaging X-ray Polarimetry Explorer, and offer key insights into its magnetic field structures and evolution.
Chao Zuo   +8 more
doaj   +1 more source

Magnetoluminescence

open access: yes, 2017
Pulsar Wind Nebulae, Blazars, Gamma Ray Bursts and Magnetars all contain regions where the electromagnetic energy density greatly exceeds the plasma energy density.
A. Hewish   +104 more
core   +1 more source

On the Contribution of Unresolved Pulsars to the Ultra-high-energy Galactic Diffuse Gamma-Ray Emission

open access: yesThe Astrophysical Journal Letters
The ultra-high-energy (UHE) Galactic diffuse gamma-ray emission holds important information on the propagation of cosmic rays in the Galaxy. However, its measurements suffer from a contamination from unresolved sources whose contribution remains unclear.
Samy Kaci   +2 more
doaj   +1 more source

Detection of Gamma-Ray Emission from the Vela Pulsar Wind Nebula with AGILE

open access: yes, 2010
Pulsars are known to power winds of relativistic particles that can produce bright nebulae by interacting with the surrounding medium. These pulsar wind nebulae (PWNe) are observed in the radio, optical, x-rays and, in some cases, also at TeV energies ...
Antonelli, A.   +70 more
core   +1 more source

LHAASO and Galactic cosmic rays. [PDF]

open access: yesInnovation (Camb), 2022
Yang R.
europepmc   +1 more source

A high-sigma model of pulsar wind nebulae [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2010
18 pages, 2 figures, submitted to ...
openaire   +3 more sources

Multiwavelength Investigation of γ-Ray Source MGRO J1908+06 Emission Using Fermi-LAT, VERITAS and HAWC

open access: yesThe Astrophysical Journal
This paper investigates the origin of the γ -ray emission from MGRO J1908+06 in the GeV–TeV energy band. By analyzing the data collected by the Fermi Large Area Telescope, the Very Energetic Radiation Imaging Telescope Array System, and High Altitude ...
A. Acharyya   +129 more
doaj   +1 more source

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