Self-Consistent Solution for an Axisymmetric Pulsar Model

Kuo-Petravic, L. G.; Petravić, M.; Roberts, K.V.

doi:10.1103/physrevlett.32.1019

Cited by 19 publications

(6 citation statements)

References 8 publications

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“…Let us briefly mention some early attempts. Kuo-Petravic, Petravic & Roberts (1974) performed self-consistent relativistic two-fluid simulations of the aligned pulsar magnetosphere and found closed field lines even beyond the light cylinder, which seems to contradict theoretical expectations. It is not clear if this is due to their dissipative scheme or massive particle effects (Wang 1978) but the distinction between neutral and charge separated plasma is essential.…”

Section: Electrosphere Modelsmentioning

confidence: 99%

Theory of pulsar magnetosphere and wind

Pétri

2016

J. Plasma Phys.

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Neutron stars are fascinating astrophysical objects immersed in strong gravitational and electromagnetic fields, at the edge of our current theories. These stars manifest themselves mostly as pulsars, emitting a timely very stable and regular electromagnetic signal. Even though discovered almost fifty years ago, they still remain mysterious compact stellar objects. In this review, we summarize the most fundamental theoretical aspects of neutron star magnetospheres and winds. The main competing models explaining their radiative properties like multi-wavelength pulse shapes and spectra and the underlying physical processes such as pair creation and radiation mechanisms are scrutinized. A global but still rather qualitative picture slowly emerges thanks to recent advances in numerical simulations on the largest scales. However considerations about pulsar magnetospheres remain speculative. For instance, the exact composition of the magnetospheric plasma is not yet known. Is it solely filled with a mixture of e ± leptons or does it contain a non-negligible fraction of protons and/or ions? Is it almost entirely filled or mostly empty except for some small anecdotal plasma filled regions? Answers to these questions will strongly direct the description of the magnetosphere to seemingly contradictory results leading sometimes to inconsistencies. Nevertheless, accounts are given as to the latest developments in the theory of pulsar magnetospheres and winds, the existence of a possible electrosphere and physical insight obtained from related observational signatures of multi-wavelength pulsed emission.

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Section: Electrosphere Modelsmentioning

confidence: 99%

Theory of pulsar magnetosphere and wind

Pétri

2016

J. Plasma Phys.

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“…Many of these frequencies are thought to reveal the actual rotation period of the neutron star. Many, including the first observed burst oscillations in the optical, in 4U1254-69 [135], show oscillations with only modest frequencies (in this case, 36.4 Hz), 17 which also might be the neutron star rotation rates. These modest spin rates are consistent with the LMXB rotation rates settling to a rate where spindown from SLIP, which may increase more than linearly with mass transfer rate, can exceed by several orders of magnitude any spinup due to accretion, which is subject to the Eddington limit.…”

Section: Low Mass X-ray Binary (And Other) Rotation Ratesmentioning

confidence: 89%

“…In addition, the SNR loss/relativistic injection of 56 Ni positrons into the pulsar jet, which occurs because of the bipolarity of SNe, and which also makes them unfit for easy cosmological interpretation, may show up as an excess in cosmic ray data [153][154][155]. This may offer a satisfying resolution for the apparent anomalous dimming of distant SNe explained in terms of local cosmic ray abundances, without invoking the creation of electron-positron pairs near pulsars and their acceleration along 'open' field lines which do not exist if one believes in the validity of the Sommerfeld equations [17,18]. TeV fermions generated by SNe and/or pulsars would alleviate the short lifetime problem (∼10 6 yr) associated with the Galactic center as a potential direct source.…”

Section: The Positron Excess Wmap 'Haze' and Fermi 'Bubbles'mentioning

confidence: 99%

“…duced beyond the light cylinders of, and by the rotating magnetic fields from, newly-formed pulsars embedded within their stellar remnants [17,18] can account for the bipolarity of SN 1987A [19][20][21]. This model of emission from supraluminally induced polarization currents (SLIP) provides a mechanism for generating a pulsed beam, rotating on the surface of a cone whose half angle (and angle from the pulsar axis of rotation) is given by,…”

Section: Introductionmentioning

confidence: 99%

“…Indeed the data from SN 1987A presented herein, when interpreted through the model discussed in detail within this work, support a beam/jet collimation factor >10 4 in producing its early light curve by interaction with more-or-less stationary circumstellar material, but in addition predicts that GRB afterglows, and by extension of the principles of supraluminal excitations, even GRBs themselves, may dim only as distance −1 (see §4), and thus easily removes the requirement for such a high energy. duced beyond the light cylinders of, and by the rotating magnetic fields from, newly-formed pulsars embedded within their stellar remnants [17,18] can account for the bipolarity of SN 1987A [19][20][21]. This model of emission from supraluminally induced polarization currents (SLIP) provides a mechanism for generating a pulsed beam, rotating on the surface of a cone whose half angle (and angle from the pulsar axis of rotation) is given by,…”

Section: Introductionmentioning

confidence: 99%

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Pulsar-Driven Jets in Supernovae, Gamma-Ray Bursts, and the Universe

Middleditch

2012

Advances in Astronomy

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The bipolarity of Supernova 1987A can be understood through its very early light curve observed from the CTIO 0.4-m telescope and IUE FES, and following speckle observations of the 'Mystery Spot' by two groups. These indicate a highly directional beam/jet of light/particles, with initial collimation factors in excess of 10 4 and velocities in excess of 0.95 c, involving up to 10 −5 M interacting with circumstellar material. These can be produced by a model proposed in 1972, by Bolotovskii and Ginzburg, which employs pulsar emission from polarization currents induced/(modulated faster than c) beyond the pulsar light cylinder by the periodic electromagnetic field, (supraluminally induced polarization currents -SLIP). SLIP accounts for the disruption of progenitors in supernova explosions and their anomalous dimming at cosmological distances, jets from Sco X-1 and SS 433, the lack/presence of intermittent pulsations from the high/low luminosity low mass X-ray binaries, long/short gamma-ray bursts and predicts that their afterglows are the pulsed optical/near infrared emission associated with these pulsars. SLIP may also account for the TeV e + /e − results from PAMELA and ATIC, the WMAP 'Haze'/Fermi 'Bubbles', and the r-process. SLIP jets from SNe of the first stars may allow galaxies to form without dark matter, and explain the peculiar, non-gravitational motions observed from pairs of distant galaxies by GALEX.

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Self-consistent model of the global structure of axially-symmetric pulsar magnetosphere in massless approximation

Rylov

1988

Astrophys Space Sci

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Self-Consistent Solution for an Axisymmetric Pulsar Model

Cited by 19 publications

References 8 publications

Theory of pulsar magnetosphere and wind

Theory of pulsar magnetosphere and wind

Pulsar-Driven Jets in Supernovae, Gamma-Ray Bursts, and the Universe

Self-consistent model of the global structure of axially-symmetric pulsar magnetosphere in massless approximation

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