An H I Ring in the Southeast Cygnus Loop

Details An H I Ring in the Southeast Cygnus Loop An H I Ring in the Southeast Cygnus Loop

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aj....130..165l&link_type=abstract

The Astronomical Journal, Volume 130, Issue 1, pp. 165-171.

Astronomy and Astrophysics

Astronomy

1

Ism: Clouds, Ism: Individual: Name: Cygnus Loop, Radio Lines: Ism, Ism: Supernova Remnants

Scientific paper

A large ring feature is identified in 21 cm neutral hydrogen (H I) line observations of the Cygnus Loop supernova remnant. The observations were made with the Dominion Radio Astrophysical Observatory's Synthesis Telescope and 26 m telescope. The eastern and western parts of the ring are bright, but the central regions are faint. On the sky, the H I ring extends from the southeast rim toward the center of the Cygnus Loop but is argued to lie on the front side, outside the shock front, except at its eastern end. The ring is found in the IRAS 60 and 100 μm maps of the region, allowing H I and dust column densities to be determined. The association of the eastern end of the ring with the optically and X-ray-identified southeast knot supports its physical association with the Cygnus Loop. The ring's mean velocity of -4 km s-1 is offset from the Cygnus Loop galactocentric velocity of ~4 km s-1. This indicates that the ring has been accelerated by ~8 km s-1 by the rocket effect, in a similar manner to that for the H I cloud at the northeast limb of the Cygnus Loop. The Cygnus Loop cavity is proposed to result from the acceleration of several similar clouds.

Affiliated with

Also associated with

No associations

Rating

An H I Ring in the Southeast Cygnus Loop 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 An H I Ring in the Southeast Cygnus Loop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An H I Ring in the Southeast Cygnus Loop will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1433171