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The smooth spin-down of young pulsars is perturbed by two non-deterministic phenomenon, glitches and timing noise. Although the timing noise provides insights into nuclear and plasma physics at extreme densities, it acts as a barrier to…

High Energy Astrophysical Phenomena · Physics 2019-09-25 A. Parthasarathy , R. M. Shannon , S. Johnston , L. Lentati , M. Bailes , S. Dai , M. Kerr , R. N. Manchester , S. Oslowski , C. Sobey , W. van Straten , P. Weltevrede

PSR J0537-6910, also known as the Big Glitcher, is the most prolific glitching pulsar known, and its spin-induced pulsations are only detectable in X-ray. We present results from analysis of 2.7 years of NICER timing observations, from 2017…

We simulate scattering delays from the interstellar medium to examine the effectiveness of three estimators in recovering these delays in pulsar timing data. Two of these estimators use the more traditional process of fitting…

High Energy Astrophysical Phenomena · Physics 2023-02-28 Jacob E. Turner , Daniel R. Stinebring , Maura A. McLaughlin , Anne M. Archibald , Timothy Dolch , Ryan S. Lynch

It is well known that timing jitter can degrade the bit error rate (BER) of receivers that recover the clock from input data. However, timing jitter can also result in an indefinite increase in the settling time of clock recovery circuits,…

Emerging Technologies · Computer Science 2019-12-06 Naveen Kadayinti , Amitalok J. Budkuley , Maryam S. Baghini , Dinesh K. Sharma

Analyze of experimental results shows that the energy discharge efficiency of the modern modulators is 0.92-0.93. The energy transfer efficiency can be reached up to 0.7 for 1.5 usec pulse width and up to 0.8 for 3.0 usec accordingly. The…

Accelerator Physics · Physics 2007-05-23 Anatoly Krasnykh

We theoretically and experimentally establish a connection between linearly chirped pulse propagation properties and the complex generalization of Wigner-Smith time delay for both transmitted and reflected pulses in linear and dispersive…

We analyse the scattering of sine-Gordon breathers on a square potential well. We show that the scattering process depends not only on the vibration frequency of the breather and its incoming speed but also on its phase as well as the depth…

Other Condensed Matter · Physics 2013-05-29 B. Piette , W. J. Zakrzewski

We present timing solutions for ten pulsars discovered in 350 MHz searches with the Green Bank Telescope. Nine of these were discovered in the Green Bank Northern Celestial Cap survey and one was discovered by students in the Pulsar Search…

A timing system provides high-precision signals to allow the controls over a variety of hardware and software components in the accelerator complex. This is guaranteed by the radio frequency (RF) and trigger signal synchronization for…

We study implications for the apparent alignment of the spin axes, proper-motions, and polarization vectors of the Crab and Vela pulsars. The spin axes are deduced from recent Chandra X-ray Observatory images that reveal jets and nebular…

Astrophysics · Physics 2009-10-31 Dong Lai , David F. Chernoff , James M. Cordes

The braking index, $n$, of a pulsar is a measure of its angular momentum loss and the value it takes corresponds to different spin-down mechanisms. For a pulsar spinning down due to gravitational wave emission from the principal mass…

High Energy Astrophysical Phenomena · Physics 2025-03-27 A. L. Hewitt , M. Pitkin , I. M. Hook

We present new timing models and update our previous ones for the rotational evolution of seven young energetic pulsars, including four of the top five in spin-down luminosity Edot among all known pulsars. For each of the six pulsars that…

The time-delay-based reservoir computing setup has seen tremendous success in both experiment and simulation. It allows for the construction of large neuromorphic computing systems with only few components. However, until now the interplay…

Adaptation and Self-Organizing Systems · Physics 2021-08-09 Florian Stelzer , André Röhm , Kathy Lüdge , Serhiy Yanchuk

The Rossi X-ray Timing Explorer has observed five outbursts from the transient 2.5 ms accretion-powered pulsar SAX J1808.4-3658 during 1998-2008. We present a pulse timing study of the most recent outburst and compare it with the previous…

High Energy Astrophysical Phenomena · Physics 2009-09-28 J. M. Hartman , A. Patruno , D. Chakrabarty , C. B. Markwardt , E. H. Morgan , M. van der Klis , R. Wijnands

X-ray observations of the accreting X-ray pulsar 4U~1907+09, obtained during February 1996 with the Proportional Counter Array on the Rossi X-ray Timing Experiment (RXTE), have enabled the first measurement of the intrinsic pulse period…

Astrophysics · Physics 2009-10-30 J. J. M. in 't Zand , A. Baykal , T. E. Strohmayer

With the new GSI High Current Injector, the beam pulse intensity will be increased by more than two orders of magnitude. The high beam power and the short stopping range at particle energies below 12 MeV/u can destroy accelerator components…

Accelerator Physics · Physics 2007-05-23 J. Glatz , J. Klabunde , U. Scheeler , D. Wilms

We numerically investigate momentum diffusion rates for the pulse kicked rotor across the quantum to classical transition as the dynamics are made more macroscopic by increasing the total system action. For initial and late time rates we…

Quantum Physics · Physics 2009-11-07 A. J. Daley , A. S. Parkins , R. Leonhardt , S. M. Tan

The X-ray pulsar RX J0440.9+4431 went through a giant outburst in 2022 and reached a record-high flux of 2.3 Crab, as observed by Swift/BAT. We study the evolution of different spectral and timing properties of the source using NICER…

The Fermilab Booster is being upgraded under the Proton Improvement Plan (PIP) to be capable of providing a proton flux of $2.25^{17}$ protons per hour. The intensity per cycle will remain at the present operational $4.3^{12}$ protons per…

Accelerator Physics · Physics 2015-11-05 K. Seiya , C. M. Bhat , D. E. Johnson , V. V. Kapin , W. A. Pellico , C. Y. Tan , R. J. Tesarek

The H- Accelerator consists of a 750 keV Cockcroft Walton preaccelerator and an Alvarez type 50 MeV linac. The accelerator has been in operation since 1961. Since 1981, it has been used as the injector for the Intense Pulsed Neutron Source…

Accelerator Physics · Physics 2007-05-23 L. I. Donley , V. F. Stipp , F. R. Brumwell , G. E. McMichael