Results 11 to 20 of about 512 (177)

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

Nature, 2023
AbstractSpider pulsars are neutron stars that have a companion star in a close orbit. The companion star sheds material to the neutron star, spinning it up to millisecond rotation periods, while the orbit shortens to hours. The companion is eventually ablated and destroyed by the pulsar wind and radiation1,2.
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   +4 more sources

A Massive Pulsar in a Compact Relativistic Binary [PDF]

Science, 2013
Pulsar Tests GravityBecause of their extremely high densities, massive neutron stars can be used to test gravity. Based on spectroscopy of its white dwarf companion,Antoniadiset al.(p.448) identified a millisecond pulsar as a neutron star twice as heavy as the Sun.
Antoniadis, J., Freire, P. C. C., Wex, N., Tauris, T. M., Lynch, R. S., van Kerkwijk, M. H., Kramer, M., Bassa, C., Dhillon, V. S., Driebe, T., Hessels, J. W. T., Kaspi, V. M., Kondratiev, V. I., Langer, N., Marsh, T. R., McLaughlin, M. A., Pennucci, T. T., Ransom, S. M., Stairs, I. H., van Leeuwen, J., Verbiest, Joris, Whelan, D. G.   +21 more
openaire   +5 more sources

Periodicity Search for Pulsar Binaries with TESS [PDF]

The Astrophysical Journal Letters, 2020
Abstract Pulsar binaries, in particular redback systems, provide good sources to study the pulsar wind flow and its interaction with the companion stars. Fermi-LAT have proposed probable pulsar binary candidates in its catalogs. An orbital modulation search of binary candidates is an effective way to identify pulsar binary sources from ...
Partha Sarathi Pal, P. H. T. Tam, Weitang Liang, Chengye Cao, K. L. Li, C. Y. Hui, A. K. H. Kong   +6 more
openaire   +2 more sources

Binary Pulsars [PDF]

Symposium - International Astronomical Union, 1981
There are now three radio frequency pulsars known to be in binary systems: PSRs 1913+16, 0820+02, and 0655+64. The first of these, discovered in 1974, moves in a tight, highly eccentric orbit with a period of approximately 7h 45m. Its companion has not yet been identified with certainty, but must be a compact object of mass comparable to that of the ...
openaire   +1 more source

On the Detectability of Ultracompact Binary Pulsar Systems [PDF]

The Astrophysical Journal, 2021
Abstract Using neural networks, we integrate the ability to account for Doppler smearing due to a pulsar’s orbital motion with the pulsar population synthesis package psrpoppy to develop accurate modeling of the observed binary pulsar population.
Nihan Pol, Maura McLaughlin, Duncan R. Lorimer, Nathan Garver-Daniels   +3 more
openaire   +2 more sources

Vainshtein mechanism in binary pulsars

Physical Review D, 2013
minor revisions to match published version in ...
de Rham, Claudia, Tolley, Andrew J., Wesley, Daniel H.   +2 more
openaire   +3 more sources

Binary and Other Recycled Pulsars [PDF]

Symposium - International Astronomical Union, 1992
Binary pulsars and others with weak fields and rapid rotation now number several dozen and appear to have been spun up by close binary mass transfer. Some are lineal descendents of X-ray binaries; others may result from accretion-induced collapse of binary white dwarfs or from captures, exchanges, and collisions in clusters. Seven accurate neutron star
openaire   +3 more sources

On the Orbital Properties of Millisecond Pulsar Binaries [PDF]

The Astrophysical Journal, 2018
Abstract We report a detailed analysis of the orbital properties of a binary millisecond pulsar (MSP) with a white dwarf (WD) companion. Positive correlations between the orbital period P b and eccentricity ϵ are found in two classes of MSP binaries with a He WD and with a CO/ONeMg WD, though their trends are different.
C. Y. Hui, Kinwah Wu, Qin Han, A. K. H. Kong, P. H. T. Tam   +4 more
openaire   +3 more sources

Origin of the Binary Pulsar J0737-3039B

Physical Review Letters, 2005
Evolutionary scenarios suggest that the progenitor of the new binary pulsar J0737-3039B \cite{ref1,ref2} was a He-star with $M > 2.1-2.3~\Ms$ \cite{ref3,ref4}. We show that this case implies that the binary must have a large ($>120$ km/s) center of mass velocity.
Piran, Tsvi, Shaviv, Nir J.
openaire   +4 more sources

A massive millisecond pulsar in an eccentric binary [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
The recent discovery of a population of eccentric (e ~ 0.1) millisecond pulsar (MSP) binaries with low-mass white dwarf companions in the Galactic field represents a challenge to evolutionary models that explain MSP formation as recycling: all such models predict that the orbits become highly circularised during a long period of accretion.
E. D. Barr, P. C. C. Freire, M. Kramer, D. J. Champion, M. Berezina, C. G. Bassa, A. G. Lyne, B. W. Stappers   +7 more
openaire   +4 more sources