Results 61 to 70 of about 16,242 (188)

Timing of Millisecond Pulsars in NGC 6752. III. On the Presence of Nonluminous Matter in the Cluster’s Core

The Astrophysical Journal
Millisecond pulsars are subject to accelerations in globular clusters (GCs) that manifest themselves in both the first and second spin period time derivatives, and can be used to explore the mass distribution of the potentials they inhabit.
A. Corongiu, A. Ridolfi, F. Abbate, M. Bailes, A. Possenti, M. Geyer, R. N. Manchester, M. Kramer, P. C. C. Freire, M. Burgay, S. Buchner, F. Camilo   +11 more
doaj   +1 more source

Investigating Unassociated Fermi-LAT sources for the search of Gamma ray pulsars including Millisecond pulsars using semicoherent approch [PDF]

EPJ Web of Conferences
The search for gamma-ray pulsars including millisecond pulsars (MSPs) among unassociated Fermi-Large Area Telescope (LAT) sources offers an opportunity to study these rapidly rotating, highly magnetized neutron stars.
Hrishikesh Chandana A., Morselli Aldo, Belardinelli Daniele, Rodriguez Fernandez Gonzalo, D’Antonio Sabrina, Fafone Viviana   +5 more
doaj   +1 more source

Reassessing The Fundamentals: New Constraints on the Evolution, Ages and Masses of Neutron Stars

, 2011
The ages and masses of neutron stars (NSs) are two fundamental threads that make pulsars accessible to other sub-disciplines of astronomy and physics.
Kiziltan, Bulent
core   +1 more source

Frequency-dependent Emission of the Millisecond Pulsar B1937+21 with the Parkes Ultrawideband Receiver

The Astrophysical Journal
In this study, we report on the broadband polarization behavior of the millisecond pulsar B1937+21 (J1939+2134), using high-quality observations made with the ultrawideband low receiver on Murriyang, the Parkes radio telescope.
Z. Wang, Z. G. Wen, J. P. Yuan, N. Wang, W. Han, H. G. Wang, J. L. Chen, Z. Wang   +7 more
doaj   +1 more source

Follow-up Investigation of 11 Pulsars Discovered in the Commensal Radio Astronomy FAST Survey

The Astrophysical Journal
In this paper, we study 11 pulsars that were discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in the Commensal Radio Astronomy FAST Survey.
K. Yang, L. Li, J. P. Yuan, N. Wang, D. Li, P. Wang, C. C. Miao, W. W. Zhu, M. Y. Xue, W. M. Yan, J. B. Wang, R. Yuen, G. L. Lü, C. H. Zhu, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, D. Zhao, Z. Wang, J. Xu, C. Sun, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, C. H. Niu, J. R. Niu, L. Qian, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, S. J. Dang, X. H. Yu, R. S. Zhao, X. Zhou, L. Zhang, J. F. Wu, C. J. Wang, Y. B. Wang, Z. Y. Gan   +42 more
doaj   +1 more source

Outer gap accelerator closed by magnetic pair-creation process

, 2010
We discuss outer gap closure mechanism in the trans-field direction with the magnetic pair-creation process near the stellar surface. The gap closure by the magnetic pair-creation is possible if some fraction of the pairs are produced with an outgoing ...
Abdo, Abdo, Blandford, Cheng, Dyks, Dyks, Harding, Harding, Hirotani, Hirotani, J. Takata, K. S. Cheng, Pellizzoni, Spitkovsky, Takata, Takata, Tang, Thompson, Venter, Y. Wang, Zhang, Zhang   +21 more
core   +1 more source

Can eccentric binary millisecond pulsars form by accretion induced collapse of white dwarfs?

, 2010
Binary radio pulsars are generally believed to have been spun up to millisecond periods (i.e. recycling) via mass accretion from their donor stars, and they are the descendants of neutron star low-mass X-ray binaries.
Alpar, Bailyn, Belczynski, Bhattacharya, Bhattacharya, Burrows, Canal, Champion, Cote, Cumming, Dai, Davies, Dessart, Du, Ferrario, Freire Paulo, Harrison, Hobbs, Hurley, Hurley, Hurley, Illarinov, Isern, Ivanova, Kitaura, Kluźniak, Kroupa, Kulkarni, Lai, Lai, Liu, Liu, Lorimer, Lorimer, Manchester, Michel, Nomoto, Pfahl, Podsiadlowski, Qian, Ren-Xin Xu, Ruderman, Ruderman, Scheck, Stairs, Taam, Tauris, Tutukov, Van Paradijs, Wang, Wang, Wen-Cong Chen, Xi-Wei Liu, Xiang-Dong Li, Xu, Xu   +55 more
core   +1 more source

Follow-up Timing of 12 Pulsars Discovered in Commensal Radio Astronomy FAST Survey

The Astrophysical Journal
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.
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   +42 more
doaj   +1 more source

Application of the Gaussian mixture model in pulsar astronomy -- pulsar classification and candidates ranking for {\it Fermi} 2FGL catalog

, 2012
Machine learning, algorithms to extract empirical knowledge from data, can be used to classify data, which is one of the most common tasks in observational astronomy.
Abdo, Ackermann, Bhattacharya, D. J. Champion, Eatough, Espinoza, Espinoza, Fasano, K. J. Lee, Kassam, L. Guillemot, Lin, Lyne, M. Kramer, Manchester, Nolan, Peacock, Press, Shklovskii, Tauris, Theodoridis, Weltevrede, Y. L. Yue   +22 more
core   +1 more source

The Anomalous Acceleration of PSR J2043+1711: Long-period Orbital Companion or Stellar Flyby?

The Astrophysical Journal
Based on the rate of change of its orbital period, PSR J2043+1711 has a substantial peculiar acceleration of 3.5 ± 0.8 mm s ^–1 yr ^–1 , which deviates from the acceleration predicted by equilibrium Milky Way (MW) models at a 4 σ level.
Thomas Donlon II, Sukanya Chakrabarti, Michael T. Lam, Daniel Huber, Daniel Hey, Enrico Ramirez-Ruiz, Benjamin Shappee, David L. Kaplan, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Paul T. Baker, Paul R. Brook, H. Thankful Cromartie, Kathryn Crowter, Megan E. DeCesar, Paul B. Demorest, Timothy Dolch, Elizabeth C. Ferrara, William Fiore, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Deborah C. Good, Jeffrey S. Hazboun, Mark Huber, Ross J. Jennings, Megan L. Jones, Matthew Kerr, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Alexander McEwen, Maura A. McLaughlin, Natasha McMann, Bradley W. Meyers, Cherry Ng, David J. Nice, Timothy T. Pennucci, Benetge B. P. Perera, Nihan S. Pol, Henri A. Radovan, Scott M. Ransom, Paul S. Ray, Ann Schmiedekamp, Carl Schmiedekamp, Brent J. Shapiro-Albert, Ingrid H. Stairs, Kevin Stovall, Abhimanyu Susobhanan, Joseph K. Swiggum, Michael A. Tucker, Haley M. Wahl   +55 more
doaj   +1 more source