Results 21 to 30 of about 7,206,331 (163)

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

Monthly 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]

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

Best Practice: CT-guided Adaptive Radiotherapy Reference Planning on the Ethos Platform. [PDF]

J Appl Clin Med Phys
Abstract Online adaptive radiotherapy (ART) enables treatment plan modifications based on the patient's anatomy at each fraction, addressing limitations of conventional radiotherapy that relies on a static pre‐treatment plan. CT‐guided ART (CTgART), as implemented on the Varian Ethos platform, has gained increased clinical adoption over the past ...
Ray X, Harms J, Price A, Lin MH, Stanley DN.   +4 more
europepmc   +2 more sources

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

The 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, Hua Feng, Hong Li, Jiahuan Zhu, Qiong Wu, Jiahui Huang, Massimo Minuti, Weichun Jiang, Weihua Wang, Renxin Xu, Enrico Costa, Dongxin Yang, Saverio Citraro, Hikmat Nasimi, Jiandong Yu, Ge Jin, Ming Zeng, Peng An, Luca Baldini, Ronaldo Bellazzini, Alessandro Brez, Luca Latronico, Carmelo Sgrò, Gloria Spandre, Michele Pinchera, Fabio Muleri, Paolo Soffitta   +26 more
openaire   +4 more sources

The effect of proton damage on the X-ray spectral response of MOS CCDs for the swift X-ray telescope [PDF]

, 2002
The effect of non-ionising energy loss(NIEL) of protons in charge-coupled devices is to displace silicon atoms and any dopant materials present from their lattice positions to form lattice defects which in turn can trap electrons [1].
Abbey, AF, Ambrosi, RM, R.M Ambrosi, Wells, A, Smith, D, A.A Wells, A.D.T Short, A.F Abbey, D.R Smith, Short, A   +9 more
core   +1 more source

Properties and observability of glitches and anti-­glitches in accreting pulsars [PDF]

, 2015
Several glitches have been observed in young, isolated radio pulsars, while a clear detection in accretion-powered X-ray pulsars is still lacking. We use the Pizzochero snowplow model for pulsar glitches as well as starquake models to determine for the ...
Doroshenko, V., Ferrigno, C., P. M. Pizzochero, Ducci, L., V. Doroshenko, P. Pizzochero, A. Santangelo, Santangelo, A., S. Mereghetti, C. Ferrigno, MEREGHETTI, Sandro, L. Ducci, Pizzochero, P. M.   +12 more
core   +1 more source

30 Glitches in slow pulsars [PDF]

, 2006
We have analyzed 5.5 years of timing observations of 7 "slowly" rotating radio pulsars, made with the Westerbork Synthesis Radio Telescope. We present improved timing solutions and 30, mostly small, new glitches.
Stappers, B. W.; id_orcid, Stappers, B.W., B. W. Stappers, Janssen, G. H., G. H. Janssen, Janssen, G.H., Stappers, B. W.   +6 more
core   +1 more source

Search for glitches in gamma-ray pulsars with deep learning

, 2022
Pulsar glitches are generally assumed to be an apparent manifestation of the superfluid interior of neutron stars. Most of them have been discovered and extensively studied by continuous monitoring of radio emission.
E. V. Sokolova, A. G. Panin
core   +1 more source

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

Physics & 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, Arnon Dar, Shlomo Dado, Arnon Dar   +3 more
openaire   +1 more source

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

The 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, , Gotthelf, , Vasisht, , Dotani, , Kinugasa   +4 more
openaire   +2 more sources