Results 91 to 100 of about 512 (177)

Can Slow Pulsars in Milky Way Globular Clusters Form via Partial Recycling?

The Astrophysical Journal Letters
Alongside the population of several hundred radio millisecond pulsars currently known in Milky Way globular clusters, a subset of six slowly spinning pulsars (spin periods 0.3–4 s) are also observed.
Kyle Kremer, Claire S. Ye, Craig O. Heinke, Anthony L. Piro, Scott M. Ransom, Frederic A. Rasio   +5 more
doaj   +1 more source

The detectability of eccentric binary pulsars

, 2014
Studies of binary pulsars provide insight into various theories of physics. Detection of such systems is challenging due to the Doppler modulation of the pulsed signal caused by the orbital motion of the pulsar. We investigated the loss of sensitivity in eccentric binary systems for different types of companions. This reduction of sensitivity should be
Bagchi, Manjari, Lorimer, Duncan R., Wolfe, Spencer   +2 more
openaire   +2 more sources

Recovering Pulsar Periodicity from Time-of-arrival Data by Finding the Shortest Vector in a Lattice

The Astrophysical Journal
The strict periodicity of pulsars is one of the primary ways through which their nature and environment can be studied, and it has also enabled precision tests of general relativity and studies of nanohertz gravitational waves using pulsar timing arrays (
Dotan Gazith, Aaron B. Pearlman, Barak Zackay   +2 more
doaj   +1 more source

Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds. [PDF]

Nat Astron, 2022
Caleb M, Heywood I, Rajwade K, Malenta M, Stappers B, Barr E, Chen W, Morello V, Sanidas S, van den Eijnden J, Kramer M, Buckley D, Brink J, Motta SE, Woudt P, Weltevrede P, Jankowski F, Surnis M, Buchner S, Bezuidenhout MC, Driessen LN, Fender R.   +21 more
europepmc   +1 more source

CHIME-o-Grav: Wideband Timing of Four Millisecond Pulsars from the NANOGrav 15 yr Dataset

The Astrophysical Journal
Wideband timing of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) datasets was first done for the 12.5 yr dataset. This method, where a single time of arrival and a single dispersion measure (DM) are measured using the entire
Gabriella Y. Agazie, David L. Kaplan, Abhimanyu Susobhanan, Ingrid H. Stairs, Deborah C. Good, Bradley W. Meyers, Emmanuel Fonseca, Timothy T. Pennucci, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Paul T. Baker, Paul R. Brook, Alyssa Cassity, H. Thankful Cromartie, Kathryn Crowter, Megan E. DeCesar, Paul B. Demorest, Timothy Dolch, Fengqiu Adam Dong, Elizabeth C. Ferrara, William Fiore, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Jeffrey S. Hazboun, Ross J. Jennings, Megan L. Jones, Matthew Kerr, Michael T. Lam, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Alexander McEwen, James W. McKee, Maura A. McLaughlin, Natasha McMann, Cherry Ng, David J. Nice, Benetge B. P. Perera, Nihan S. Pol, Henri A. Radovan, Scott M. Ransom, Paul S. Ray, Alexander Saffer, Ann Schmiedekamp, Carl Schmiedekamp, Brent J. Shapiro-Albert, Kevin Stovall, Joseph K. Swiggum, Mercedes S. Thompson, Haley M. Wahl   +52 more
doaj   +1 more source

Identifying Companions in Pulsar Binary Systems via Gaia Data

Universe
In the optical band, very few pulsars can be directly detected, but some of the pulsar binary companions can be observed. This study leverages high-precision astrometric data from Gaia Data Release 3 (DR3) to identify pulsar companions in binary systems.
Yueqi Song, Li Guo, Zhen Yan, Qiqi Wu, Guangli Wang, Ying Wang   +5 more
doaj   +1 more source

A Striking Confluence Between Theory and Observations of High-Mass X-ray Binary Pulsars. [PDF]

Res Astron Astrophys, 2018
Christodoulou DM, Laycock SGT, Kazanas D.   +2 more
europepmc   +1 more source

A Census of Pulsars in Possible Association with Galactic Open Clusters

The Astrophysical Journal Letters
Among the ∼4000 known pulsars in our Galaxy, ≲10% are found in globular clusters, but none has been confirmed in any open clusters yet, although they outnumber globular clusters by about 20 times.
Lu Zhou, Zhi-Qiang You, Lu Li, Xiao-Jin Liu, Xing-Jiang Zhu, Zong-Hong Zhu   +5 more
doaj   +1 more source

Timing gamma-ray pulsars using Gibbs sampling

Astronomy & Astrophysics
Timing analyses of gamma-ray pulsars in the Fermi Large Area Telescope (LAT) dataset can provide sensitive probes of many astrophysical processes, including timing noise in young pulsars, orbital period variations in redback binaries, and the stochastic ...
Clark C. J., Valtolina S., Nieder L., van Haasteren R.   +3 more
doaj   +1 more source

Testing Gravity with Binary Pulsars in the SKA Era

The Open Journal of Astrophysics
Binary (and trinary) radio pulsars are natural laboratories in space for understanding gravity in the strong field regime, with many unique and precise tests carried out so far, including the most precise tests of the strong equivalence principle and of ...
Vivek Venkatraman Krishnan, Lijing Shao, Vishnu Balakrishnan, Miquel Colom i Bernadich, Amodio Carleo, Adam Deller, Alessandro Corongiu, Paulo Freire, Marisa Geyer, Eva Hackmann, Huanchen Hu, Zexin Hu, Jutta Kunz, Michael Kramer, Kuo Liu, Marcus Lower, Xueli Miao, Andrea Possenti, Delphine Perrodin, Denisha Pillay, Scott Ransom, Ingrid Stairs, Benjamin Stappers, SKA Pulsar Science Working Group   +23 more
doaj   +1 more source