Pulsar timing. I - Observations from 1970 to 1978

Helfand, D. J.; Taylor, J. H.; Backus, P. R.; Cordes, J. M.

doi:10.1086/157860

Cited by 72 publications

(29 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

contrasting

confidence: 88%

“…Our deter mination of the motion of 0950+08 disagrees with that of Helfand et al (1980); we find a transverse motion of only 20 km/s. The motion of 1929+10 in Table 1 agrees with the value in Helfand et al (1980), but not with Gullahorn and Rankin's (1978) value. Our proper motion for 2021+51 is consistent with the motion proposed by Morris et al (1979) based on an association with supernova remnant HB21, although our errors are large.…”

contrasting

confidence: 88%

See 1 more Smart Citation

Pulsar Astrometry

Backer¹,

Sramek

1981

Symp. - Int. Astron. Union

View full text Add to dashboard Cite

The 35-km interferometer at NRAO was used at 2.7 GHz during 1974–1979 to determine pulsar proper motions. Observations from each epoch were reduced to pseudo-position vector offsets which include both unknown, and constant, absolute position errors for the pulsars and their reference sources, as well as the time-varying proper motion of the pulsars. The coordinate system for which the errors in the offset components are independent is chosen. Proper motions resulting from a linear fit to the offsets for five pulsars are given in Table 1.

show abstract

contrasting

confidence: 88%

contrasting

confidence: 88%

Pulsar Astrometry

Backer¹,

Sramek

1981

Symp. - Int. Astron. Union

View full text Add to dashboard Cite

show abstract

“…This provides a characteristic scale. Pulsars with periods longer than a fraction of a second show timing noise: random variations of pulse arrival time that change slowly with time (Helfand et al 1980). These variations are most extreme for the young Crab and Vela pulsars (Boynton et al 1972;Lyne & Graham-Smith 1998;Scott et al 2003;Dodson et al 2007).…”

Section: Spindownmentioning

confidence: 99%

Radio Pulsars

et al. 2015

View full text Add to dashboard Cite

Almost 50 years after radio pulsars were discovered in 1967, our understanding of these objects remains incomplete. On the one hand, within a few years it became clear that neutron star rotation gives rise to the extremely stable sequence of radio pulses, that the kinetic energy of rotation provides the reservoir of energy, and that electromagnetic fields are the braking mechanism. On the other hand, no consensus regarding the mechanism of coherent radio emission or the conversion of electromagnetic energy to particle energy yet exists. In this review, we report on three aspects of pulsar structure that have seen recent progress: the self-consistent theory of the magnetosphere of an oblique magnetic rotator; the location, geometry, and optics of radio emission; and evolution of the angle between spin and magnetic axes. These allow us to take the next step in understanding the physical nature of the pulsar activity.

show abstract

“…would have obtained a deviation of 10% resulting from the approximations of Harrison & Tademaru (1975). (2) For the Crab pulsar (Helfand et al 1980; PSR B0531+21), the parameter yields " ¼ 0:008s/R with R the pulsar radius, which is small even for large offsets s.…”

Section: Calculation Of L and Fmentioning

confidence: 99%

A Note on Summation of Kapteyn Series in Astrophysical Problems

Lerche

Tautz

2007

ApJ

View full text Add to dashboard Cite

In problems concerning the rate of radiation and radiation force of magnetized pulsars, there arise sequences of infinite series of Bessel functions that are generalized Kapteyn series of the second kind. To date, closed-form solutions for such series have proven elusive. The general procedure for effecting closed form solutions is given here, and the infinite series is summed so that there is now no need to resort to approximations that are not easy to justify. In other astrophysical problems, where similar series can arise, the method presented here can be used to simplify otherwise cumbersome results and to present general analytical formulae.

show abstract

Pulsar timing. I - Observations from 1970 to 1978

Cited by 72 publications

References 0 publications

Pulsar Astrometry

Pulsar Astrometry

Radio Pulsars

A Note on Summation of Kapteyn Series in Astrophysical Problems

Contact Info

Product

Resources

About