Results 91 to 100 of about 109,416 (289)

ARECIBO PULSAR SURVEY USING ALFA. IV. MOCK SPECTROMETER DATA ANALYSIS, SURVEY SENSITIVITY, AND THE DISCOVERY OF 40 PULSARS [PDF]

, 2015
The on-going Arecibo Pulsar-ALFA (PALFA) survey began in 2004 and is searching for radio pulsars in the Galactic plane at 1.4 GHz. Here we present a comprehensive description of one of its main data reduction pipelines that is based on the PRESTO ...
P. Lazarus, A. Brazier, J. Hessels, J. Hessels, C. Karako-Argaman, V. Kaspi, R. Lynch, R. Lynch, E. Madsen, C. Patel, S. Ransom, P. Scholz, J. Swiggum, Weiwei Zhu, B. Allen, S. Bogdanov, F. Camilo, F. Cardoso, S. Chatterjee, J. Cordes, F. Crawford, J. Deneva, R. Ferdman, P. Freire, F. Jenet, B. Knispel, Kejia Lee, J. V. Leeuwen, J. V. Leeuwen, D. Lorimer, A. Lyne, M. Mclaughlin, X. Siemens, L. Spitler, I. Stairs, K. Stovall, A. Venkataraman   +36 more
semanticscholar   +1 more source

Modeling the Radial Distribution of Pulsars in the Galaxy

The Astrophysical Journal Letters
The Parkes 20 cm multibeam pulsar surveys have discovered nearly half of the known pulsars and revealed many distant pulsars with high dispersion measures.
J. T. Xie, J. B. Wang, N. Wang, R. Manchester, G. Hobbs   +4 more
doaj   +1 more source

Characterizing Timing Noise in Normal Pulsars with the Nanshan Radio Telescope

Universe
We present a decade of observations of pulse arrival times for 85 pulsars using the Nanshan radio telescope from July 2002 to March 2014. The Cholesky method can accurately estimate the covariance function of the timing residuals, significantly improving
Jianping Yuan, Na Wang, Shijun Dang, Lin Li, Feifei Kou, Wenming Yan, Zhigang Wen, Zhiyong Liu, Rai Yuen, Jingbo Wang, Zurong Zhou, Peng Liu, Dalin He   +12 more
doaj   +1 more source

Pulsed γ-ray emission from magnetar 1E 2259+586 [PDF]

Journal of Astronomy and Space Sciences, 2013
Anomalous X-ray pulsars (AXPs) are thought to be magnetars which are young isolated neutron stars with extremely strong magnetic fields of >1014 Gauss.
Jason Hung Kit Wu, Chung Yue Hui, Regina Hsiu Hui Huang, Albert Kwok Hing Kong, Kwong Sang Cheng, Jumpei Takata, Pak Hin Thomas Tam, Eric Man Ho Wu, Joe Liu   +8 more
doaj   +1 more source

Fluorine‐Free Biomass‐Derived Ionic Liquid Electrolytes: Ion Dynamics and Electrochemical Properties

Chemistry – A European Journal, EarlyView.
This study presents the synthesis, physical characterization, and transport as well as electrochemical properties of a novel class of ten ionic liquids (ILs). The ILs are created with two biomass derived anions such as furan‐2‐carboxylate [FuA] and tetrahydrofuran‐2‐carboxylate [HFuA] coupled to a range of nitrogen heterocyclic cations, for which the ...
Sayantika Bhakta, Gaurav Tatrari, Maiia Rudakova, Andrei Filippov, Faiz Ullah Shah   +4 more
wiley   +1 more source

Timing the millisecond pulsars in 47 Tucanae [PDF]

, 2001
In the last 10 years 20 millisecond pulsars have been discovered in the globular cluster 47 Tucanae. Hitherto, only 3 of these had published timing solutions. Here we improve upon these 3 and present 12 new solutions.
A. G. Lyne, D. R. Lorimer, F. Camilo, N. D'Amico, P. C. Freire, Phinney, R. N. Manchester, Taylor   +7 more
core   +2 more sources

Testing Relativistic Gravity with Radio Pulsars [PDF]

, 2014
Before the 1970s, precision tests for gravity theories were constrained to the weak gravitational fields of the Solar system. Hence, only the weak-field slow-motion aspects of relativistic celestial mechanics could be investigated. Testing gravity beyond
N. Wex
semanticscholar   +1 more source

Detecting dark matter with imploding pulsars in the galactic center. [PDF]

Physical Review Letters, 2014
The paucity of old millisecond pulsars observed at the galactic center of the Milky Way could be the result of dark matter accumulating in and destroying neutron stars.
J. Bramante, T. Linden
semanticscholar   +1 more source

Mechanism of the X-ray and Soft Gamma-ray Emissions from the High Magnetic Field Pulsar: PSR B1509-58 [PDF]

Journal of Astronomy and Space Sciences, 2013
We use the outer gap model to explain the spectrum and the energy dependent light curves of the X-ray and soft γ-ray radiations of the spin-down powered pulsar PSR B1509-58.
Yu Wang, Jumpei Takata, Kwong Sang Cheng
doaj   +1 more source

Spin Equilibrium of Rapidly Spinning Neutron Stars via Transient Accretion

Galaxies, 2023
The concept of spin equilibrium due to an interaction between the stellar magnetosphere and a thin, Keplerian accretion disk, and a well-known formula of the corresponding equilibrium spin frequency, provide a key understanding of spin evolution and the ...
Sudip Bhattacharyya
doaj   +1 more source