We report on nearly two years of timing observations of the low-mass binary millisecond pulsar, PSR J1909−3744 with the Caltech-Parkes-Swinburne Recorder II (CPSR2), a new instrument that gives unprecedented timing precision. Daily observations give a weighted rms residual of 74 ns, indicating an extremely low level of systematic error. We have greatly improved upon the previous parallax and pr...

single-marker tracking and (b) adaptive tracking with 2 markers. If marker 1 becomes obscured, the algorithm switches to marker 2 (if visible) to reconstruct the location of marker 1 and provide correct feedback. 3744 Optical Motion Tracking With Two Markers for Robust Prospective Motion Correction Aditya Singh, Benjamin Zahneisen, Brian Keating, Michael Herbst, Maxim Zaitsev, and Thomas Ernst ...

Badr Saad T. Alkahtani 1 and Abdon Atangana 2,* 1 Department of Mathematics, Colleges of Sciences, King Saud University, P.O. Box 1142, Riyadh 11989, Saudi Arabia; [email protected] 2 Institute for Groundwater Studies, Faculty of Natural and Agricultural Sciences, University of the Free State, Bloemfontein 9301, South Africa * Correspondence: [email protected]; Tel.: +27-51-401-3744; Fax...

We present recent observations of three pulsars, PSR J1909-3744, PSR J1600-3053, and PSR J1022+1001, that demonstrate remarkable levels of timing precision and instrumental stability. Data were taken with CPSR2, a new baseband recording system at the Parkes radio telescope, during the first 12 months of operation.

ABSTRACT We present baseband radio observations of the millisecond pulsar J1909 ? 3744, most precisely timed pulsar, using MeerKAT telescope as part MeerTime timing array campaign. During a particularly bright scintillation event showed strong evidence pulse mode changing, among first pulsars and shortest duty cycle to do so. Two modes appear be present, with weak (lower signal-to-noise ratio) ...

We report the discovery of PSR J1909−3744, a 2.95 millisecond pulsar in a nearly circular 1.53 day orbit. Its narrow pulse width of 43 μs allows pulse arrival times to be determined with great accuracy. We have spectroscopically identified the companion as a moderately hot (T ≈ 8500K) white dwarf with strong absorption lines. Radial velocity measurements of the companion will yield the mass rat...

This document specifies a set of methods, headers, message bodies, properties, and reports that define Access Control extensions to the WebDAV Distributed Authoring Protocol. This protocol permits a client to read and modify access control lists that instruct a server whether to allow or deny operations upon a resource (such as HyperText Transfer Protocol (HTTP) method invocations) by a given p...