The pulsar wind nebula of the geminga pulsar

G. G. Pavlov, D. Sanwal, V. E. Zavlin

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The superb spatial resolution of Chandra has allowed us to detect a 20″ long tail behind the Geminga pulsar, with a hard spectrum (photon index Γ = 1.0 ± 0.2) and a luminosity of (1.3 ± 0.2) × 1029 ergs s-1 in the 0.5-8 keV band, for an assumed distance of 200 pc. The tail could be either a pulsar jet, confined by a toroidal magnetic field of ∼100 μG, or it could be associated with the shocked relativistic wind behind the supersonically moving pulsar confined by the ram pressure of the oncoming interstellar medium. We also detected an arclike structure 5″-7″ ahead of the pulsar, extended perpendicular to the tail, with a factor of 3 lower luminosity. We see a 3 σ enhancement in the Chandra image apparently connecting the arc with the southern outer tail that has been possibly detected with XMM-Newton. The observed structures imply that the Geminga's pulsar wind is intrinsically anisotropic.

Original languageEnglish (US)
Pages (from-to)1146-1150
Number of pages5
JournalAstrophysical Journal
Volume643
Issue number2 I
DOIs
StatePublished - Jun 1 2006

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nebulae
pulsars
erg
spatial resolution
magnetic field
luminosity
ram
XMM-Newton telescope
newton
arcs
augmentation
photons
magnetic fields
index

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Pavlov, G. G. ; Sanwal, D. ; Zavlin, V. E. / The pulsar wind nebula of the geminga pulsar. In: Astrophysical Journal. 2006 ; Vol. 643, No. 2 I. pp. 1146-1150.
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Pavlov, GG, Sanwal, D & Zavlin, VE 2006, 'The pulsar wind nebula of the geminga pulsar', Astrophysical Journal, vol. 643, no. 2 I, pp. 1146-1150. https://doi.org/10.1086/503250

The pulsar wind nebula of the geminga pulsar. / Pavlov, G. G.; Sanwal, D.; Zavlin, V. E.

In: Astrophysical Journal, Vol. 643, No. 2 I, 01.06.2006, p. 1146-1150.

Research output: Contribution to journalArticle

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