We explore collisions between two white dwarfs as a pathway for
making Type Ia Supernovae (SNIa). White dwarf number densities in
globular clusters allow 10-100 redshift < 1 collisions per year,
and observations by Chomiuk et al (2008_aa) of globular clusters
in the nearby S0 galaxy NGC 7457 have detected what is likely to
be a SNIa remnant. We carry out simulations of the collision between
two 0.6 Msun white dwarfs at various impact parameters and mass
resolutions. For impact parameters less than half the radius of the
white dwarf, we find such collisions produce about 0.4 Msun of
56$Ni, making such events potential candidates for underluminous
SNIa or a new class of transients between Novae and SNIa.
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