High Energy Astrophysics Programs in kipac: Nustar & next
tarix 11.08.2018 ölçüsü 445 b. #69322
High Energy Astrophysics Programs in KIPAC: NuSTAR & NEXT William Craig Presentation to DOE HEP Review 06/03/2004
Overview Natural followons to the science base built at SLAC for GLAST. NuSTAR will make contemporaneous observations with GLAST in 2007-10. KIPAC has strong science and hardware role NeXT will follow in 2011/12
Three primary science goals
Obscured galactic sources
Supernova remnant science
Sensitive 44Ti surveys
SNe Ia widely believed to result from thermonuclear incineration of an accreting C/O white dwarf. We don’t know: Nature and evolution of the progenitor system The lightcurve is believed to be powered by the decay of 56Ni A SN Ia has never been seen in the X-ray/gamma-ray Observations of the time evolution of the 56Ni line (158 keV) would provide important constraints on the explosion mechanism and dynamics
Exploring the extreme Universe
The Beyond Einstein roadmap
Instrument concept
HEFT Flight Units (HF-1, -2, -3) Constellation-X Prototypes (ConX-0, -1, -2)
NuSTAR capabilities
NuSTAR status Concept study report in preparation. Prototype optics in test now, 40˝ – 48˝ performance validated. Concept Study completed June 18. Site visit in August ’04, downselection in November ’04. Launch November 2007
The New X-Ray Telescope (NeXT) NeXT is a Japanese X-ray satellite mission , likely to launch ~ 2011 or 2012. Designed to emphasize studies of the “non-thermal universe” - X-ray and gamma-ray emission from relativistic particles in XRBs, SNRs, AGNs, and clusters. Followup on NuSTAR and GLAST discoveries, extending to higher , and perhaps softer, energies.
NeXT Concept Three major experiments: SXT: An X-ray TES microcalorimeter at the focus on an XRT. HXT: A CdTe detector at the focus of a NuSTAR-like telescope. SGD: An actively collimated soft gamma-ray telescope.
SLAC will participate in the SGD
Schedules
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