Results 61 to 70 of about 1,910,738 (272)
Deep optical imaging of the gamma-ray pulsar J1048-5832 with the VLT
, 2013 (abridged) PSR J1048-5832 is a young Vela-like pulsar that was recently detected in gamma-rays with Fermi, and also in X-rays with Chandra and XMM-Newton. It powers a compact PWN visible in X-rays.
Danilenko, Andrey +4 more
core +1 more source
Multi-wavelength observations of 2HWC J1928+177: dark accelerator or new TeV gamma-ray binary?
, 2020 2HWC J1928+177 is a Galactic TeV gamma-ray source detected by the High Altitude Water Cherenkov (HAWC) Observatory up to ~ 56 TeV. The HAWC source, later confirmed by H.E.S.S., still remains unidentified as a dark accelerator since there is no apparent ...
An, Hongjun +11 more
core +1 more source
Applied SciencesPulsars 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
X-ray Polarimetry of X-ray Pulsars
GalaxiesRadiation from X-ray pulsars (XRPs) was expected to be strongly linearly polarized owing to a large difference in their ordinary and extraordinary mode opacities. The launch of IXPE allowed us to check this prediction. IXPE observed a dozen X-ray pulsars, discovering pulse-phase dependent variation of the polarization degree (PD) and polarization angle
Juri Poutanen +2 more
openaire +3 more sources
The Quiescent X‐Ray Emission of Three Transient X‐Ray Pulsars [PDF]
The Astrophysical Journal, 2002 We report on BeppoSAX and Chandra observations of three Hard X-Ray Transients in quiescence containing fast spinning (P<5 s) neutron stars: A 0538-66, 4U 0115+63 and V 0332+53. These observations allowed us to study these transients at the faintest flux levels thus far. Spectra are remarkably different from the ones obtained at luminosities a factor
Alberto Moretti +5 more
openaire +5 more sources
Detection of X-ray Emission from the Very Old Pulsar J0108-1431
, 2008 PSR J0108-1431 is a nearby, 170 Myr old, very faint radio pulsar near the "pulsar death line" in the P-Pdot diagram. We observed the pulsar field with the Chandra X-ray Observatory and detected a point source (53 counts in a 30 ks exposure, energy flux ...
Becker +22 more
core +1 more source
Chandra observations of the pulsar wind nebula in SNR G0.9+0.1 [PDF]
, 2001 We present observations with the Chandra X-ray Observatory of the pulsar wind nebula (PWN) within the supernova remnant G0.9+0.1. At Chandra's high resolution, the PWN has a clear axial symmetry; a faint X-ray point source lying along the symmetry axis ...
B. M. Gaensler +10 more
core +2 more sources
Diffuse X-ray emission around an ultraluminous X-ray pulsar [PDF]
Nature Astronomy, 2019 Ultraluminous X-ray sources (ULXs) are extragalactic X-ray emitters located off-center of their host galaxy and with a luminosity in excess of a few ${10^{39}\text{ erg s}^{-1}}$, if emitted isotropically. The discovery of periodic modulation revealed that in some ULXs the accreting compact object is a neutron star, indicating luminosities ...
Danilo Magistrali +24 more
openaire +5 more sources
Comprehensive Measurement of Position and Velocity in the Transverse Direction Using the Crab Pulsar
AerospaceTraditional X-ray pulsar ranging and velocity measurement methods only estimate the radial position and velocity information of the pulsar. For non-linear orbits, errors in the transverse position and velocity of the pulsar lead to errors in the radial ...
Yuan Feng +4 more
doaj +1 more source
NuSTAR discovery of a cyclotron absorption line in the transient X-ray pulsar 2S 1553−542 [PDF]
, 2015 We report the results of a spectral and timing analysis of the poorly studied transient X-ray pulsar 2S 1553-542 using data collected with the NuSTAR and Chandra observatories and the Fermi/GBM ins ...
S. Tsygankov +6 more
semanticscholar +1 more source