Comet Hale-Bopp: Velocity Field Of Ions From Fabry-Pérot Imaging

Details Comet Hale-Bopp: Velocity Field Of Ions From Fabry-Pérot Imaging Comet Hale-Bopp: Velocity Field Of Ions From Fabry-Pérot Imaging

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997em%26p...77..245b&link_type=abstract

Earth, Moon, and Planets, v. 77, Issue 3, p. 245-252 (1997).

Physics

1

Comet C/1995 O1 (Hale-Bopp), Plasma, Velocities

Scientific paper

Fabry-Pérot interferograms of comet Hale-Bopp were obtained on several nights in March and April 1997. For this purpose we utilized the 2-channel focal reducer of the Max-Planck-Institute for Aeronomy at the 2-m telescope of the Pik Terskol Observatory. Solid Fabry-Pérot etalons of resolving power 30000 were used in both channels of the focal reducer. The main aim of this study is to measure the velocities and abundances of OH^+ and H_2O^+, both ions closely related to the same parent molecule, H_2O. In the blue channel interferograms we identified several individual OH^+ rotational lines of the A^3Π_i - X^3Σ^- (0-0) transition and measured their Doppler shifts. The target emissions in the red channel were the H_2O^+ lines of the ~A^2A_1 - ~X^2B_1 (10-0) band. We found that the line of sight velocities, obtained from the Doppler shifted wavelengths of emissions in the comet are higher in sunward direction than in the plasma tail and do not exceed 20 km s^-1. The corresponding values, deprojected in antisolar direction, are consistent with predictions by magnetohydrodynamical models of the solar-wind-comet interaction, when one accounts for the extremely high gas production rate of comet Hale-Bopp.

Affiliated with

Also associated with

No associations

Rating

Comet Hale-Bopp: Velocity Field Of Ions From Fabry-Pérot Imaging 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 Comet Hale-Bopp: Velocity Field Of Ions From Fabry-Pérot Imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comet Hale-Bopp: Velocity Field Of Ions From Fabry-Pérot Imaging will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-836961