On the Relationship Between HI Disks and Dark Matter

Details On the Relationship Between HI Disks and Dark Matter On the Relationship Between HI Disks and Dark Matter

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724613m&link_type=abstract

American Astronomical Society, AAS Meeting #217, #246.13; Bulletin of the American Astronomical Society, Vol. 43, 2011

Other

1

Scientific paper

Our best dynamical tracer for dark matter (DM) in galaxies are extended HI dominated disks. Indeed from the late 1970's it has been noted that the HI column density in extended HI disks often is nearly a linear tracer of the projected DM surface density. This coincidence has puzzled researchers. It has lead some to posit that the DM is in the disk, and hence may be disipative rather than non-interacting as in the standard Cold Dark Matter scenario. Others have pointed out that the MOND scenario would cause extended disks to produce rotation curves which could be interpreted as DM halos with a scaled up mass density. Here we argue that this phenomenon results from viscous disk evolution which will produce extended HI disks with mass profiles resembling the nearly isothermal halos they are embedded in.

Affiliated with

Also associated with

No associations

Rating

On the Relationship Between HI Disks and Dark Matter 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 On the Relationship Between HI Disks and Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Relationship Between HI Disks and Dark Matter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1399142