Results 21 to 30 of about 467 (130)

Bragg crystal monochromators

open access: yesMajor Reference Works, Page 290-301., 2021
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
John P. Sutter C. Chantler   +2 more
wiley  

+1 more source

Structure-Activity Relationships in RuCs/MgO Catalysts During Ammonia Synthesis. [PDF]

open access: yesChemSusChem
Ru and Cs species in RuCs/MgO catalysts are mapped under relevant temperatures and pressures of ammonia synthesis with the help of operando X‐ray absorption spectroscopy. Interconversion of three types of Ru (RuO2, highly dispersed RuOx clusters, and metallic Ru) as well as hydrated and dehydrated Cs+ species are observed and correlated with ammonia ...
Biffar L   +5 more
europepmc   +2 more sources

Do magnetars glitch? Timing irregularities in anomalous X-ray pulsars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1999
We examine the timing history of several anomalous X-ray pulsars (AXPs), and find that they exhibit spin down irregularities statistically similar to those of radio pulsars. We propose that these irregularities are simply glitches like those of radio pulsars and fit glitching spin down solutions to the data available for 1E~2259+586, 1E~1048.1-5937 and
Heyl, Jeremy S., Hernquist, Lars
openaire   +2 more sources

SEARCHING FOR X-RAY VARIABILITY IN THE GLITCHING ANOMALOUS X-RAY PULSAR 1E 1841–045 IN KES 73 [PDF]

open access: yesThe Astrophysical Journal, 2010
16 pags, 3 tables, 2 figures, submitted to ApJ.
Zhu, Weiwei, Kaspi, Victoria M.
openaire   +2 more sources

X-Ray Polarimetry of the Crab Nebula with PolarLight: Polarization Recovery after the Glitch and a Secular Position Angle Variation [PDF]

open access: yesThe Astrophysical Journal Letters, 2021
Abstract We report follow-up observations of the Crab Nebula with the PolarLight X-ray polarimeter, which revealed a possible variation in polarization associated with a pulsar glitch in 2019. The new observations confirm that the polarization has recovered roughly 100 days after the glitch.
Xiangyun Long   +26 more
openaire   +4 more sources

A Second Glitch from the "Anomalous" X-Ray Pulsar 1RXS J170849.0-4000910 [PDF]

open access: yesThe Astrophysical Journal, 2003
13 pages, 2 figures. Revised manuscript and Fig 1 following refereeing.
Kaspi, V. M., Gavriil, F. P.
openaire   +2 more sources

Are fast radio bursts produced by large glitches of anomalous x-ray pulsars?

open access: yesPhysics & Astronomy International Journal, 2023
Phase transitions within anomalous X-ray pulsars (AXPs) and soft γ-ray repeaters (SGRs) can lead to mini contractions. Such contractions produce pulsar gliches and shock break outs from their surface accompanied by thermal X/γ -ray emission. Highly relativistic dipolar e+e− bunches launched from the pulsar polar caps emit fast radio bursts (FRBs) of ...
Shlomo Dado   +3 more
openaire   +1 more source

Invariable X-Ray Profile and Flux of the Crab Pulsar during Its Two Glitches

open access: yesThe Astrophysical Journal, 2022
Abstract We compare the X-ray profiles and fluxes of the Crab pulsar before and after the glitches in 2017 and 2019, using the data collected by the Insight-HXMT, NICER, and Fermi/GBM, to test whether there is any evidence for magnetosphere rearrangement after glitch.
Y. H. Zhang   +8 more
openaire   +1 more source

A Giant Glitch in the Energetic 69 Millisecond X-Ray Pulsar AXS J161730−505505 [PDF]

open access: yesThe Astrophysical Journal, 2000
We present new results on the recently discovered 69 ms X-ray pulsar AXS J161730-505505, the sixth youngest example of a rotation-powered pulsar. We have undertaken a comprehensive X-ray-observing campaign of AXS J161730-505505 with the ASCA, BeppoSAX, and RXTE observatories and follow its long-term spin-down history between 1989 and 1999 using these ...
, Torii   +4 more
openaire   +2 more sources

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