Interstellar turbulence, random density variations, and scintillation measurements

Details Interstellar turbulence, random density variations, and scintillation measurements Interstellar turbulence, random density variations, and scintillation measurements

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....3...63h&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 3 p 63-66 (SEE N85-34862 23-93)

Astronomy and Astrophysics

Astronomy

Cosmic Plasma, Cosmic Rays, Electron Density Profiles, Intergalactic Media, Interstellar Matter, Magnetic Flux, Scatter Propagation, Turbulence, Cosmic Ray Showers, Entropy, Pulsars, Radio Sources (Astronomy), Scintillation Counters

Scientific paper

The presence of random electron variations suggests that the ionized interstellar medium is turbulent. In the interstellar plasma the presence of power spectra of such variations extending to spatial scales much less than a Coulomb mean free path, Lambdac, is required by analyses of measurements of scintillation and angular broadening of pulsar radio signals. The existence of corresponding variations in magnetic field strength could efficiently scatter cosmic rays and thus constrain cosmic-ray propagation. Unfortunately both the origin of the electron density variations and mechanisms by which these variations couple to fluctuations in magnetic field strength are unknown. It is conjectured that the small-scale density variations are generated by the convective distortion of initially large-scale isobaric entropy structures in the turbulent interstellar plasma. An investigation of the spectra of turbulent entropy structures, velocity, and magnetic fields at small spatial scales is made. The modifier small is employed to characterize length scales much less than the dimension, L, containing the bulk of the turbulent energy.

Affiliated with

Also associated with

No associations

Rating

Interstellar turbulence, random density variations, and scintillation measurements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Interstellar turbulence, random density variations, and scintillation measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interstellar turbulence, random density variations, and scintillation measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-754845