44Ti Emission from Cassiopeia A - SRON

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IBIS results 35-40 keV ● Cas A detected up to ~72 keV ● Several other sources detected (see Peter den Hartog's talk) ● In hindsight: no sources contaminate BeppoSAX detection! 44 Ti Emission from Cassiopeia A Jacco Vink Estec, Noordwijk, January 19, 2005
IBIS spectrum Raw spectrum ● 67.9 keV line detected at 3.1σ level F= (2.3±0.8)x10 -5 ph/s/cm 2 ● 78.4keV line 3σ upper limit (power law cont): < 2.3x10 -5 ph/s/cm 2 ● Joined IBIS/BeppoSAX-PDS result (pow. law): F= (1.7±0.3)x10 -5 ph/s/cm 2 ● 3σ upper limit (with pow. Law): < 2.7x10 -5 ph/s/cm 2 ● With synchrotron model (srcut): F = (2.2±0.3)x10 -5 ph/s/cm 2 NB Spectrum directly calibrated on Crab spectrum 44 Ti Emission from Cassiopeia A Jacco Vink Estec, Noordwijk, January 19, 2005
Page 1 and 2: 44 Ti Emission from Cassiopeia A Ja
Page 3 and 4: 44 Ti & Integral IBIS SPI 44 Ti Emi
Page 5 and 6: Explosive Nucleosynthesis (Kifonidi
Page 7 and 8: Detection of 44 Ti emission from Ca
Page 9 and 10: Evidence for Asymmetric Explosion C
Page 11 and 12: What velocities to expect? ● Curr
Page 13: INTEGRAL Observations Cas A (Amalga
Page 17: Summary and Conclusions ● 44 Ti a

44Ti Emission from Cassiopeia A - SRON

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