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Revisiting INTEGRAL/SPI observations of ⁴⁴Ti from Cassiopeia A

Author： Siegert Thomas Diehl Roland Krause Martin G. H. Greiner Jochen

Publisher： Edp Sciences

E-ISSN： 1432-0746|579|issue|A124-A124

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.579, Iss.issue, 2015-07, pp. : A124-A124

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

Context. The 340-yr old supernova remnant Cassiopeia A, located at 3.4 kpc distance, is the best-studied young core-collapse supernova remnant. Nucleosynthesis yields in radioactive isotopes have been studied with different methods, in particular for production and ejection of ⁴⁴Ti and ⁵⁶Ni, which originate in the innermost regions of the supernova. ⁴⁴Ti was first discovered in this remnant, but is not seen consistently in other core-collapse sources.

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