Results 21 to 30 of about 42,366 (215)

The Polarized Cosmic Hand: IXPE Observations of PSR B1509−58/MSH 15−52

open access: yesThe Astrophysical Journal, 2023
We describe IXPE polarization observations of the pulsar wind nebula (PWN) MSH 15−5 ^2 , the “Cosmic Hand.” We find X-ray polarization across the PWN, with B -field vectors generally aligned with filamentary X-ray structures.
Roger W. Romani   +102 more
doaj   +1 more source

Multi-Wavelength Properties of the 2021 Periastron Passage of PSR B1259-63

open access: yesUniverse, 2021
PSR B1259-63 is a gamma-ray binary system hosting a radio pulsar orbiting around a O9.5Ve star, LS 2883, with a period of ∼3.4 years. The interaction of the pulsar wind with the LS 2883 outflow leads to unpulsed broadband emission in the radio, X-ray ...
Maria Chernyakova   +11 more
doaj   +1 more source

Radio-quiet and radio-loud pulsars: similar in Gamma-rays but different in X-rays [PDF]

open access: yes, 2015
We present new Chandra and XMM-Newton observations of a sample of eight radio-quiet Gamma-ray pulsars detected by the Fermi Large Area Telescope. For all eight pulsars we identify the X-ray counterpart, based on the X-ray source localization and the best
De Luca, A.   +6 more
core   +3 more sources

A Bayesian Classifier for X-Ray Pulsars Recognition

open access: yesInternational Journal of Aerospace Engineering, 2016
Recognition for X-ray pulsars is important for the problem of spacecraft’s attitude determination by X-ray Pulsar Navigation (XPNAV). By using the nonhomogeneous Poisson model of the received photons and the minimum recognition error criterion, a ...
Hao Liang, Yafeng Zhan, Chaowei Duan
doaj   +1 more source

Characterization of the optical and X-ray properties of the northwestern wisps in the Crab Nebula [PDF]

open access: yes, 2013
We have studied the wisps to the north-west of the Crab pulsar as part of a multi-wavelength campaign in the visible and in X-rays. Optical observations were obtained using the Nordic Optical Telescope in La Palma and X-ray observations were made with ...
Bucciantini, Niccolo   +6 more
core   +3 more sources

Shedding new light on the Crab with polarized X-rays

open access: yesScientific Reports, 2017
Strong magnetic fields, synchrotron emission, and Compton scattering are omnipresent in compact celestial X-ray sources. Emissions in the X-ray energy band are consequently expected to be linearly polarized. X-ray polarimetry provides a unique diagnostic
M. Chauvin   +15 more
doaj   +1 more source

Multi-wavelength studies of the gamma-ray pulsar PSR J1907+0602

open access: yes, 2012
PSR J1907+0602 is a radio-faint, 107-ms GeV gamma-ray pulsar that was discovered with the Fermi LAT in a blind pulsar search. PSR J1907+0602 is located near the bright, extended TeV gamma-ray source MGRO J1908+06 which may be an associated pulsar wind ...
Pandel, Dirk, Scott, Robert
core   +1 more source

A new nearby pulsar wind nebula overlapping the RX J0852.0-4622 supernova remnant [PDF]

open access: yes, 2012
Energetic pulsars can be embedded in a nebula of relativistic leptons which is powered by the dissipation of the rotational energy of the pulsar.
Acero, F.   +4 more
core   +4 more sources

Early phases of different types of isolated neutron star

open access: yes, 2004
Two Galactic isolated strong X-ray pulsars seem to be in the densest environments compared to other types of Galactic pulsar. X-ray pulsar J1846-0258 can be in an early phase of anomalous X-ray pulsars and soft gamma repeaters if its average braking ...
AŞKIN ANKAY   +12 more
core   +1 more source

X-ray Pulsar-Based Navigation Using Pulse Phase Delay between Spacecraft and Verification with Real Data

open access: yesApplied Sciences
Pulsars are neutron stars with high rotation speeds and have extraordinary long-term rotational stability. X-ray pulsar-based navigation (XNAV) is a navigation method that estimates the position and velocity of a spacecraft using the X-ray radiation from
Kun Jiang   +3 more
doaj   +1 more source

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