Results 101 to 110 of about 43,788 (263)

X-Ray Studies of PSR J1838–0655 and its Wind Nebula Associated with HESS J1837–069 and 1LHAASO J1837–0654u

open access: yesThe Astrophysical Journal
We analyzed X-ray data from Chandra, XMM-Newton, NICER, and NuSTAR to characterize the properties of the pulsar PSR J1838−0655 and its pulsar wind nebula (PWN) associated with HESS J1837−069.
Minseo Park   +3 more
doaj   +1 more source

Parkes Radio and NuSTAR X-Ray Observations of the Composite Supernova Remnant B0453–685 in the Large Magellanic Cloud

open access: yesThe Astrophysical Journal
Gamma-ray emission is observed coincident in position to the evolved, composite supernova remnant (SNR) B0453–685. Prior multiwavelength investigations of the region indicate that the pulsar wind nebula (PWN) within the SNR is the most likely origin for ...
Jordan Eagle   +11 more
doaj   +1 more source

Spectral and timing properties of the recently discovered Be/X-ray pulsar eRASSUJ 052914.9−662446 [PDF]

open access: green, 2022
Binay Rai   +4 more
openalex   +1 more source

Selective Hydrogenation of 1‐Indanone to 1‐Indanol near Room Temperature Catalyzed by Immobilized Pt‐Nanoparticles on SBA‐15

open access: yesChemCatChem, Volume 17, Issue 16, August 18, 2025.
This study presents a sustainable method of producing 1‐indanol at room temperature via the selective reduction of the C = O bond in 1‐indanone using Pt/SBA‐15 catalysts and green hydrogen. Using n‐decane as a carrier liquid, the process efficiently converts the substance under ambient conditions.
Nick Herrmann   +6 more
wiley   +1 more source

Chandra Proper Motions and Milliarcsecond Astrometry of 19 Pulsars

open access: yesThe Astrophysical Journal
We present X-ray proper motion (PM) measurements of 19 pulsars using new and archival data from the Chandra X-ray Observatory, including pulsar wind trails and X-ray filaments. Precise X-ray PMs are often limited by uncertainties in aligning observations
Jack T. Dinsmore, Roger W. Romani
doaj   +1 more source

X-ray emission from PSR J1809-1917 and its pulsar wind nebula, possibly associated with the TeV gamma-ray source HESS J1809-193

open access: yes, 2007
We detected X-ray emission from the 50-kyr-old pulsar J1809-1917 and resolved its pulsar wind nebula (PWN) with Chandra. The pulsar spectrum fits PL+BB model with the photon index of 1.2 and the BB temperature of 2 MK for n_{H}=0.7\times 10^{22} cm^{-2}.
G. G. Pavlov   +4 more
core   +1 more source

Two Micron‐Size Dark Dimensions

open access: yesFortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui   +2 more
wiley   +1 more source

X-ray pulsar in the Crab Nebula [PDF]

open access: yesSymposium - International Astronomical Union, 1970
Prof. Friedman did not communicate any text or Summary of his communication.
openaire   +3 more sources

Observations of the Transient X-ray Pulsar KS 1947+300 by the INTEGRAL and RXTE Observatories

open access: yes, 2005
We analyze the observations of the X-ray pulsar KS 1947+300 performed by the INTEGRAL and RXTE observatories over a wide (3-100 keV) X-ray energy range. The shape of the pulse profile was found to depend on the luminosity of the source.
A. A. Lutovinov   +22 more
core   +2 more sources

Additional evidence for a pulsar wind nebula in SN 1987A from multi-epoch X-ray data and MHD modelling

open access: green, 2022
Emanuele Greco   +11 more
openalex   +3 more sources

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