665 citations · 3.5k across the 29 of their papers we have counts for
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astro-ph2008★ 213 cited
Tycho Brahe's 1572 supernova as a standard type Ia explosion revealed from its light echo spectrum
Oliver Krause, Masaomi Tanaka, Tomonori Usuda +4
Type Ia supernovae (SNe Ia) are thermonuclear explosions of white dwarf stars in close binary systems. They play an important role as cosmological distance indicators and have led…
astro-ph2008★ 324 cited
The Cassiopeia A Supernova was of Type IIB
Oliver Krause, Stephan M. Birkmann, Tomonori Usuda +4
Cassiopeia A is one of the youngest supernova remnants known in the Milky Way and a unique laboratory for supernova physics. We present an optical spectrum of the Cassiopeia A supe…