A&A 368, 205-211 (2001)
DOI: 10.1051/0004-6361:20000563

Hypersonic collision of a blast wave on a low-mass star

D. García-Senz^{1, 2}, N. Serichol¹ and E. Bravo<sup>1, 2

1</sup>  Departament de Física i Enginyeria Nuclear, UPC, Sor Eulàlia d'Anzizu s/n, B5, 08034 Barcelona, Spain
    e-mail: domingo.garcia@upc.es; nuria.serichol@upc.es; eduardo.bravo@upc.es
²  Institut d'Estudis Espacials de Catalunya, Gran Capità 2-4, 08034 Barcelona, Spain

(Received 4 October 2000 / Accepted 19 December 2000)

Abstract
When a neutron star is born as a result of the accretion-induced collapse (AIC) of a white dwarf, a small but significant fraction of its mass can be simultaneously expelled at a velocity of around 10⁴ km s^-1. In this paper we study the collision between the gas ejected during the AIC of a white dwarf and a 0.3 main-sequence star by using numerical simulation techniques. We found that, for a plausible combination of the orbital parameters and impact energy, the low-mass star is completely destroyed. This scenario can help to explain the origin of isolated millisecond pulsars.

Key words: hydrodynamics -- stars: supernovae: general -- stars: pulsars: general

Offprint request: D. García-Senz

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