Results 151 to 160 of about 809,546 (293)

Spectral Studies of Super‐Eddington Accreting Neutron Stars in the Magellanic Clouds

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT Major outbursts of BeXRBs offer a unique laboratory for studying accretion onto magnetized neutron stars (NSs) over a large dynamic range. The accreting material is entrained from the accretion disk by the strong magnetic field, and then channeled onto the NS, forming a so‐called accretion column (AC).
Georgios Vasilopoulos, Marios Kouzis, Brent F. West, Peter A. Becker   +3 more
wiley   +1 more source

Binary Pulsars: Observations and Implications [PDF]

Symposium - International Astronomical Union, 1987
The Galaxy contains a large number of neutron stars in gravitation-ally bound binary systems. Among the most fruitful of these to study have been the binary radio pulsars, of which seven are now known. Unlike the “accretion-powered” neutron stars located in mass-exchanging X-ray binary systems, the “rotation-powered” binary radio pulsars are found in ...
openaire   +1 more source

Binary and Millisecond Pulsars

Living Reviews in Relativity, 2005
We review the main properties, demographics and applications of binary and millisecond radio pulsars. Our knowledge of these exciting objects has greatly increased in recent years, mainly due to successful surveys which have brought the known pulsar ...
Lorimer Duncan R.
doaj  

Radio Observations of a Candidate Redback Millisecond Pulsar: 1FGL J0523.5-2529

The Open Journal of Astrophysics
Redback pulsars are a subclass of millisecond pulsar system with a low-mass non-degenerate companion star being ablated by the pulsar. They are of interest due to the insights they can provide for late-stage pulsar evolution during the recycling process.
Owen. A. Johnson, E. F. Keane, D. J. McKenna, H. Qiu, S. J. Swihart, J. Strader, M. McLaughlin   +6 more
doaj   +1 more source

Gravitational wave astronomy of single sources with a pulsar timing array

, 2011
Abbreviated: We investigate the potential of detecting the gravitational wave from individual binary black hole systems using pulsar timing arrays (PTAs) and calculate the accuracy for determining the GW properties.
B. W. Stappers, Backer, Bell, Bell, Bertotti, Blanchet, Blanchet, Blandford, Burke-Spolaor, C. G. Bassa, Chazan, Cutler, Demorest, Deng, Detweiler, Estabrook, Finn, Fisz, Foster, G. H. Janssen, Hellings, Hemberger, Hobbs, Hughes, Jaynes, Jenet, Jenet, K. J. Lee, Kassam, Kramer, Kramer, Lee, Lorimer, M. Kramer, Manchester, N. Wex, Nan, Nicholson, Particle, R. Karuppusamy, R. Smits, Romani, Ryba, Sazhin, Scargle, Seidelmann, Sesana, Sesana, Seto, Shannon, Smits, Smits, Stairs, Standish, Takahashi, Thorne, Van Trees, Verbiest, Verbiest, Wahlquist, Wen, Yardley   +61 more
core   +1 more source

A Lower Mass Estimate for PSR J0348+0432 Based on CHIME/Pulsar Precision Timing

The Astrophysical Journal Letters
The binary pulsar J0348+0432 was previously shown to have a mass of approximately 2 M _⊙ , based on the combination of radial-velocity and model-dependent mass parameters derived from high-resolution optical spectroscopy of its white-dwarf companion.
Alexander Saffer, Emmanuel Fonseca, Scott Ransom, Ingrid Stairs, Ryan Lynch, Deborah Good, Kiyoshi W. Masui, James W. McKee, Bradley W. Meyers, Swarali Shivraj Patil, Chia Min Tan   +10 more
doaj   +1 more source

Investigation for Binary Characteristics of LS I + 61°303 with Optical Polarization

The Astrophysical Journal
We investigate the optical linear polarization caused by Thomson scattering of the stellar radiation for gamma-ray binary LS I + 61°303, which likely contains a young pulsar.
Jiaxin Liu, Haoyu Yuan, Xiangli Lei, Wenlong Xu, Jumpei Takata, Weihua Lei   +5 more
doaj   +1 more source

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

Eccentric Binary Millisecond Pulsars

, 2009
In this paper we review the recent discovery of several millisecond pulsars (MSPs) in eccentric binary systems. Timing these MSPs we were able to estimate (and in one case precisely measure) their masses. These results suggest that, as a class, MSPs have a much wider range of masses (1.3 to > 2 solar masses) than the normal and mildly recycled ...
openaire   +2 more sources

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