[112.25] Sub-A.U. Structure In Galactic HI

AAS 201st Meeting, January, 2003
Session 112. The ISM: Clouds and Regions
Poster, Thursday, January 9, 2003, 9:20am-4:00pm, Exhibit Hall AB

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[112.25] Sub-A.U. Structure In Galactic HI

A. H. Minter, D. S. Balser (NRAO), J. S. Kartaltepe (Colgate)

We have observed fluctuations in the neutral hydrogen (HI) absorption measured towards the pulsar PSR B0329+54 using the 100 meter Green Bank radio telescope (GBT). Due to the sensitivity and sky coverage of the GBT, the brightness of PSR B0329+54, and the large proper motion of this pulsar, it is feasible to measure fluctuations in the HI absorption on time scales of less than one day. We report on initial results from these observations which indicate that structures in the cold (< 100 K) HI exist with size scales less than 1 A.U.

The author(s) of this abstract have provided an email address for comments about the abstract: tminter@nrao.edu

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