Results 31 to 40 of about 3,309 (210)

Pulse profiles of millisecond pulsars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
We present a comparison between the average radio pulse profiles of millisecond pulsars (MSPs) in the field and in globular clusters. Our sample consists of 20 field MSPs and 25 cluster MSPs for which observations exist at 400 - 600 MHz. We find that 6 of the 20 field MSPs, or about 30%, have a comparable interpulse at a phase offset of 180 ±30 ...
Jayawardhana, Ray, Grindlay, Jonathan E.
openaire   +2 more sources

An ultraluminous nascent millisecond pulsar [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2015
Abstract If the ultraluminous source (ULX) M82 X-2 sustains its measured spin-up value of $\dot{\nu }= 10^{-10}\,{\rm s^{-2}}$, it will become a millisecond pulsar in less than 105 yr. The observed (isotropic) luminosity of 1040 erg s−1 also supports the notion that the neutron star will spin up to a millisecond period upon accreting ...
Kluzniak, W., Lasota, J. -P.
openaire   +3 more sources

Spin frequency distributions of binary millisecond pulsars [PDF]

open access: yes, 2014
Rotation-powered millisecond radio pulsars have been spun up to their present spin period by a 108−109 yr long X-ray-bright phase of accretion of matter and angular momentum in a low-to-intermediate mass binary system.
Tauris, T.M.   +9 more
core   +1 more source

The Effect of Irradiation on the Spin of Millisecond Pulsars

open access: yesThe Astrophysical Journal Letters, 2023
A millisecond pulsar (MSP) is an old neutron star (NS) that has accreted material from its companion star, causing it to spin up, which is known as the recycling scenario.
Shun-Yi Lan, Xiang-Cun Meng
doaj   +1 more source

THE FORMATION OF THE ECCENTRIC-ORBIT MILLISECOND PULSAR J1903+0327 AND THE ORIGIN OF SINGLE MILLISECOND PULSARS [PDF]

open access: yesThe Astrophysical Journal, 2011
The millisecond pulsar J1903+0327 is accompanied by an ordinary G-dwarf star in an unusually wide ($P_{\rm orb} \simeq 95.2$\,days) and eccentric ($e \simeq 0.44$) orbit. The standard model for producing MSPs fails to explain the orbital characteristics of this extraordinary binary, and alternative binary models are unable to explain the observables ...
Portegies Zwart, S.   +3 more
openaire   +5 more sources

Scintillation velocities of five millisecond pulsars [PDF]

open access: yes, 2000
Millisecond pulsars differ from normal pulsars in their mode of origin and their properties. They are thought to be born either through binary interaction or through accretion-induced collapse (AIC) of white dwarf stars.
Gupta, Yashwant, Gothoskar, Pradeep
core   +1 more source

Searching For and Timing Millisecond Pulsars

open access: yes, 2021
Millisecond pulsars are highly magnetised, rapidly rotating stellar remnants, produced in supernovae and later spun up to milisecond periods by companion stars.
Renee Spiewak (19121455)
core   +1 more source

Millisecond Pulsars [PDF]

open access: yesHighlights of Astronomy, 1989
AbstractMillisecond pulsars are intrinsically interesting because they illustrate some of the most extreme physical conditions to be found anywhere in the Universe, and because their evolution exhibits several stages of great drama. It had been widely believed for several years that spin-up of an old neutron star by accretion from a close stellar ...
openaire   +1 more source

Effect of low energy availability during three consecutive days of endurance training on iron metabolism in male long distance runners

open access: yesPhysiological Reports, Volume 8, Issue 12, June 2020., 2020
Three consecutive days of endurance training under low energy availability (LEA) decreased the muscle glycogen content and increased the serum hepcidin level in well‐trained male long distance runners. These results suggest that LEA is associated with a risk of exercise‐induced iron deficiency by an elevated hepcidin level in endurance athletes ...
Aya Ishibashi   +8 more
wiley   +1 more source

Optical pulsations from a transitional millisecond pulsar [PDF]

open access: yes, 2017
Millisecond pulsars are neutron stars that attain their very fast rotation during a 108-109-yr-long phase of disk accretion of matter from a low-mass companion star(1,2).
F. Meddi   +27 more
core   +1 more source

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