Results 31 to 40 of about 78,206 (262)

The Contribution of Fermi Gamma-Ray Pulsars to the local Flux of Cosmic-Ray Electrons and Positrons

, 2010
We analyze the contribution of gamma-ray pulsars from the first Fermi-Large Area Telescope (LAT) catalogue to the local flux of cosmic-ray electrons and positrons (e+e-).
A.A. Abdo ., A.G. Muslimov, A.K. Harding, D. Hooper, EGRET Team collaboration, F.A. Aharonian, Fermi LAT collaboration, Fermi LAT collaboration, J.K. Daugherty, J.M. Cordes, K. Hirotani, K.P. Watters, L. Zhang, Leo Gendelev, M.D. Kistler, Michael Dormody, R.N. Manchester, R.N. Manchester, S. Profumo, Stefano Profumo, V.V. Usov, X. Chi   +21 more
core   +1 more source

The search for statistical anisotropy in the gravitational-wave background with pulsar timing arrays

The Open Journal of Astrophysics, 2019
Pulsar-timing arrays (PTAs) are seeking gravitational waves from supermassive-black-hole binaries, and there are prospects to complement these searches with stellar-astrometry measurements.
Selim Can Hotinli, Marc Kamionkowski, Andrew H. Jaffe   +2 more
doaj   +1 more source

Relativistic Effects of Rotation in γ-ray Pulsars—Invited Review

Galaxies, 2021
In this paper, we consider the relativistic effects of rotation in the magnetospheres of γ-ray pulsars. The paper reviews the progress achieved in this field during the last three decades.
Zaza Osmanov
doaj   +1 more source

Optical and Infrared Lightcurve Modeling of the Gamma-ray Millisecond Pulsar 2FGL J2339.6-0532 [PDF]

Journal of Astronomy and Space Sciences, 2013
We report the detection of a quasi-sinusoidally modulated optical flux with a period of 4.6343 hour in the optical and infrared band of the Fermi source 2FGL J2339.7-0531.
Tzu-Ching Yen, Albert Kwok-Hing Kong, Yoichi Yatsu, Hidekazu Hanayama, Takahiro Nagayama, on behalf of OISTER   +5 more
doaj   +1 more source

A Preliminary Study of Large Scale Pulsar Candidate Sifting Based on Parallel Hybrid Clustering

Universe, 2022
Pulsar candidate sifting is an essential part of pulsar analysis pipelines for discovering new pulsars. To solve the problem of data mining of a large number of pulsar data using a Five-hundred-meter Aperture Spherical radio Telescope (FAST), a parallel ...
Zhi Ma, Zi-Yi You, Ying Liu, Shi-Jun Dang, Dan-Dan Zhang, Ru-Shuang Zhao, Pei Wang, Si-Yao Li, Ai-Jun Dong   +8 more
doaj   +1 more source

Fermi pulsar revolution [PDF]

, 2010
2009 has been an extraordinary year for gamma-ray pulsar astronomy and 2010 promises to be equally good. Not only have we registered an extraordinary increase in the number of pulsars detected in gamma rays, but we have also witnessed the birth of new ...
Caraveo, Patrizia A.
core  

Timing stability of millisecond pulsars and prospects for gravitational-wave detection [PDF]

, 2009
Analysis of high-precision timing observations of an array of approx. 20 millisecond pulsars (a so-called "timing array") may ultimately result in the detection of a stochastic gravitational-wave background.
A. W. Hotan, Backer, Bailes, Bailes, Bell, Bhat, Boyle, Caldwell, Camilo, Cognard, D. J. Champion, D. Yardley, Damour, Edwards, Edwards, Edwards, F. A. Jenet, Foster, Foster, G. B. Hobbs, Grishchuk, Hellings, Hemberger, Hobbs, Hobbs, Hobbs, Hotan, Hotan, Hotan, J. M. Sarkissian, J. P. W. Verbiest, Jacoby, Jacoby, Jaffe, Janssen, Jenet, Jenet, Jin, Johnston, Jonas, Kaspi, Kramer, Lee, Lorimer, Lorimer, Lyne, L��hmer, M. Bailes, Maggiore, Manchester, Matsakis, N. D. R. Bhat, Nan, Nice, Ord, R. N. Manchester, Romani, S. Burke-Spolaor, Sandhu, Sazhin, Segelstein, Sesana, Sesana, Splaver, Standish, Staveley-Smith, Taylor, Toscano, van Straten, van Straten, van Straten, Verbiest, W. A. Coles, W. van Straten, Walker, Wyithe, X. P. You, You   +77 more
core   +3 more sources

Grafting Nanolayers of Ni and Co Catalysts Around the Edges of Hierarchical Zeolite 13X by Leveraging the Crystal's Defects for CO2 Methanation

Carbon Energy, EarlyView.
The deactivation of nickel‐based catalysts at high temperatures poses a significant challenge in CO2 methanation processes. To address this, a strong metal–support interaction between nickel and the support was engineered by exploiting the crystal defects present in hierarchical porous zeolite 13X.
Nasir Shezad, Muddasar Safdar, Shaojiang Chen, Cheuk‐Wai Tai, Harvey Arellano‐García, Dong‐Kyun Seo, Peizhong Feng, Farid Akhtar   +7 more
wiley   +1 more source

The Emission Geometry of Pulsars with Interpulses

The Astrophysical Journal
We present polarization profiles of 23 pulsars exhibiting interpulse (IP) emissions using the Five-hundred-meter Aperture Spherical Radio Telescope. By applying the rotating vector model (RVM), we measured the inclination and impact angles for 16 pulsars,
S. N. Sun, N. Wang, W. M. Yan, S. Q. Wang   +3 more
doaj   +1 more source

On the soft emission mechanism in X-ray pulsars

Journal of Theoretical and Applied Physics, 2019
We propose a mechanism responsible for the soft emission in X-ray pulsars. We discuss the origin of the soft emission for isolated X-ray pulsars as well as for soft gamma-ray repeaters and anomalous X-ray pulsars.
Paolo Cea
doaj   +1 more source