Astron. Astrophys. 363, L21-L24 (2000)

Acknowledgements

This work was partially carried out while S.V.Chalov during his stay in 2000 was a guest at the Institute for Astrophysics and Extraterrestrial Research of the University of Bonn. The authors are grateful to the Deutsche Forschungsgemeinschaft (DFG) for the financial support of this stay in the frame of a bi-national cooperation project with grant number: 436 RUS 113/110/6-2 and in the frame of the DFG project with number Fa-97/24-2. S.V.Chalov was also partially supported by the Russian Foundation for Basic Research (RFBR) Grants 98-01-00955, 98-02-16759, 99-02-04025, and INTAS-CNES Grant No 97512 "The Heliosphere in the Local Interstellar Cloud".

The authors thank the referee for helpful remarks.

© European Southern Observatory (ESO) 2000

Online publication: December 11, 2000
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