Results 1 to 10 of about 1,603 (188)

Efficiency of Nonthermal Pulsed Emission from Eight MeV Pulsars

The Astrophysical Journal
We report on the properties of pulsed X-ray emission from eight MeV pulsars using XMM-Newton, NICER, NuSTAR, and HXMT data. For five of the eight MeV pulsars, the X-ray spectra can be fit by a broken power-law model with a break energy of ∼5–10 keV.
J. Takata, H.-H. Wang, L. C.-C. , Lin, S. Kisaka   +3 more
doaj   +1 more source

Identifying Pulsar Candidates in Interferometric Radio Images Using Scintillation

The Astrophysical Journal
Pulsars have been primarily detected by their narrow pulses or periodicity in time domain data. Interferometric surveys for pulsars are challenging due to the trade-off between beam sensitivity and beam size and the corresponding tradeoff between survey ...
Jitendra Salal, Shriharsh P. Tendulkar, Visweshwar Ram Marthi   +2 more
doaj   +1 more source

Searching for Gravitational-Wave Bursts from Cosmic String Cusps with the Parkes Pulsar Timing Array’s Third Data Release

Universe
Pulsar timing arrays (PTAs) are designed to detect nanohertz-frequency gravitational waves (GWs). Since GWs are anticipated from cosmic strings, PTAs offer a viable approach to testing their existence.
Yong Xia, Jingbo Wang, Sachiko Kuroyanagi, Wenming Yan, Yirong Wen, Agastya Kapur, Jing Zou, Yi Feng, Valentina Di Marco, Saurav Mishra, Christopher J. Russell, Shuangqiang Wang, De Zhao, Xingjiang Zhu   +13 more
doaj   +1 more source

Measuring a Gravitomagnetic Effect with the Triple Pulsar PSR J0337+1715

Universe
To the first post-Newtonian order, the orbital angular momentum of the fast-revolving inner binary of the triple system PSR J0337+1715, made of a millisecond pulsar and a white dwarf, induces an annular gravitomagnetic field which displaces the line of ...
Lorenzo Iorio
doaj   +1 more source

Investigation of Accuracy of TOA and SNR of Radio Pulsar Signals for Vehicles Navigation. [PDF]

Sensors (Basel), 2023
Kabakchiev H, Behar V, Kabakchieva D, Kisimov V, Stefanova K.   +4 more
europepmc   +1 more source

Cracking the Endothelial Calcium (Ca²⁺) Code: A Matter of Timing and Spacing. [PDF]

Int J Mol Sci, 2023
Moccia F, Brunetti V, Soda T, Berra-Romani R, Scarpellino G.   +4 more
europepmc   +1 more source

A binary pulsar in a 53-minute orbit. [PDF]

Nature, 2023
Pan Z, Lu JG, Jiang P, Han JL, Chen HL, Han ZW, Liu K, Qian L, Xu RX, Zhang B, Luo JT, Yan Z, Yang ZL, Zhou DJ, Wang PF, Wang C, Li MH, Zhu M.   +17 more
europepmc   +1 more source

China's 'sky eye': exploring the universe by measuring faint cosmic radio signals. [PDF]

Natl Sci Rev, 2023
Zhao W.
europepmc   +1 more source

Upper Limits on Pulsed Radio Emission from Unseen Compact Objects in Six Galactic Stellar Binaries

The Astrophysical Journal
We have conducted a search for radio pulsars in six Galactic stellar binary systems with unseen primary stars. All six systems have estimated primary masses in the range that could be consistent with neutron stars.
Melanie Ficarra, Fronefield Crawford, T. Joseph W. Lazio   +2 more
doaj   +1 more source

Millisecond Pulsars in M2: New Discoveries and a Detailed Timing Analysis

The Astrophysical Journal
Globular clusters (GCs) offer a unique environment for discovering and studying millisecond pulsars. In this paper, we present a multiepoch search and detailed timing analysis of millisecond pulsars in the GC M2, using the Five-hundred-meter Aperture ...
Baoda Li, Kuo Liu, Lin Wang, Shunyi Lan, P. C. C. Freire, Pinsong Zhao, Liyun Zhang, Zhengwei Liu, Lei Qian, Wu Jiang, Dejiang Yin, Yaowei Li, Yinfeng Dai, Yang Liu, Xiangcun Meng, Zhichen Pan   +15 more
doaj   +1 more source