Zobrazeno 1 - 10
of 1 417
pro vyhledávání: '"Radio pulsars"'
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 2, p L32 (2024)
We report on the first self-consistent multidimensional particle-in-cell numerical simulations of nonhomogeneous pair discharges in polar caps of rotation-powered pulsars. By introducing strong inhomogeneities in the initial plasma distribution in ou
Externí odkaz:
https://doaj.org/article/2e9902956b8749b1990a0881409c1e8d
Autor:
Yuxiao Wu, Zhichen Pan, Lei Qian, Scott M. Ransom, Ralph P. Eatough, BoJun Wang, Paulo C. C. Freire, Kuo Liu, Zhen Yan, Jintao Luo, Liyun Zhang, Minghui Li, Dejiang Yin, Baoda Li, Yifeng Li, Yinfeng Dai, Yaowei Li, Xinnan Zhang, Tong Liu, Yu Pan
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 2, p L23 (2024)
We present the discovery of three pulsars in the globular cluster (GC) M15 (NGC 7078) by the Five-hundred-meter Aperture Spherical Radio Telescope. PSR J2129+1210J (M15J) is a millisecond pulsar with a spin period of 11.84 ms and a dispersion measure
Externí odkaz:
https://doaj.org/article/72230bd637174a5499cad0c36b04cec0
Autor:
Hui-Chun Wu
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 1, p L21 (2024)
Some giant pulses and fast radio bursts (FRBs) exhibit notable circular polarization, which remains unexplained and carries significant implications for their emission mechanisms. In this study, we identify multiple nanoshot pairs uniformly spaced by
Externí odkaz:
https://doaj.org/article/48a2141adaaa4b58a7db73386f332784
Autor:
Daniel J. Reardon, Matthew Bailes, Ryan M. Shannon, Chris Flynn, Jacob Askew, N. D. Ramesh Bhat, Zu-Cheng Chen, Małgorzata Curyło, Yi Feng, George B. Hobbs, Agastya Kapur, Matthew Kerr, Xiaojin Liu, Richard N. Manchester, Rami Mandow, Saurav Mishra, Christopher J. Russell, Mohsen Shamohammadi, Lei Zhang, Andrew Zic
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L18 (2024)
The observation of neutron stars enables the otherwise impossible study of fundamental physical processes. The timing of binary radio pulsars is particularly powerful, as it enables precise characterization of their (three-dimensional) positions and
Externí odkaz:
https://doaj.org/article/bb11edee43964c8d83461936c1e54981
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L13 (2024)
In addition to being the most magnetic objects in the known Universe, magnetars are the only objects observed to generate fast-radio-burst-like emissions. The formation mechanism of magnetars is still highly debated and may potentially be probed with
Externí odkaz:
https://doaj.org/article/64dfe2750dfc4e268183f72bc91d9796
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 2, p L39 (2024)
The Parkes 20 cm multibeam pulsar surveys have discovered nearly half of the known pulsars and revealed many distant pulsars with high dispersion measures. Using a sample of 1301 pulsars from these surveys, we have explored the spatial distribution a
Externí odkaz:
https://doaj.org/article/1960c8790a3b48579ab34df65d46cbd5
Publikováno v:
Galaxies, Vol 12, Iss 1, p 7 (2024)
In this paper we review the basics of magneto-rotational properties of neutron stars focusing on spin-up/spin-down behavior at different evolutionary stages. The main goal is to provide equations for the spin frequency changes in various regimes (rad
Externí odkaz:
https://doaj.org/article/34ae0531550547ef8aaa83c083fd7091
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 217 (2024)
We develop a new method for studying the Galactic magnetic field along the spiral arms using pulsar Faraday rotation measures (RMs). Our new technique accounts for the dot-product nature of Faraday rotation and also splits the associated path integra
Externí odkaz:
https://doaj.org/article/eaeef4dddb034527897a0f2f7fc87bba
Autor:
D. Zhao, J. P. Yuan, N. Wang, D. Li, P. Wang, M. Y. Xue, W. W. Zhu, C. C. Miao, W. M. Yan, J. B. Wang, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, Y. T. Chen, S. J. Dang, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, M. Yuan, C. H. Niu, J. R. Niu, L. Qian, S. Wang, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, X. H. Yu, R. S. Zhao, R. Yuen, X. Zhou, L. Zhang, M. Xie, Y. X. Li, Y. B. Wang, Z. K. Luo, Z. Y. Gan, Z. Y. Sun, M. M. Chi, C. J. Wang
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 88 (2024)
We present phase-connected timing ephemerides, polarization pulse profiles, and Faraday rotation measurements of 12 pulsars discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in the Commensal Radio Astronomy FAST Survey. T
Externí odkaz:
https://doaj.org/article/284aaa634b0240e7a19ce2b41f3a1b5c
Autor:
Dale A. Frail, Emil Polisensky, Scott D. Hyman, William D. Cotton, Namir E. Kassim, Michele L. Silverstein, Rahul Sengar, David L. Kaplan, Francesca Calore, Joanna Berteaud, Maïca Clavel, Marisa Geyer, Samuel Legodi, Vasaant Krishnan, Sarah Buchner, Fernando Camilo
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 34 (2024)
We report on the results of an image-based search for pulsar candidates toward the Galactic bulge. We used mosaic images from the MeerKAT radio telescope that were taken as part of a 173 deg ^2 survey of the bulge and Galactic center of our Galaxy at
Externí odkaz:
https://doaj.org/article/a23f36a0ad824eb581c0b70125d428f3