Hot spiral structure in the accretion disk of the dwarf nova IP Pegasi

Bibcode
1998AIPC..431..459H
DOI
10.1063/1.55931
Harlaftis, E. T.; Steeghs, D.; Horne, K.; Martín, E. L.
Bibliographical reference

Accretion processes in astrophysical systems: Some like it hot! - eigth astrophysics conference. AIP Conference Proceedings, Volume 431, pp. 459-462 (1998).

Advertised on:
4
1998
Number of authors
4
IAC number of authors
1
Citations
1
Refereed citations
0
Description
We present observational evidence of high-temperature spiral structure on the accretion disk of the dwarf nova IP Peg during outburst. The Doppler tomogram of ionized helium He II 4686 shows a two-arm spiral pattern on the disk image. The spiral shocks are generated by the tides raised by the secondary star on the disk and shows that a new mechanism may be important in transporting angular momentum out of the disk in addition to viscosity.
Type
Non-refereed

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