X-rays as a probe of the Universe
Probing the Universe …..
Flux = sT4 umax = 1011 T (in Kelvin)
History of x-ray astronomy
X-ray Production
X-ray spectra
Celestial sphere as seen by UHURU (1970)
Slide 8
X-rays from accreting binary systems
Slide 10
Neutron stars: Black Hole:
Primary X-ray emission mechanism: Accretion
Key observational characteristics of XRBs
Estimating mass of compact object (binary systems)
Measured NS masses
Black hole candidates
IXAE on IRS-P3
Slide 18
The Indian effort: …. The next step “a multwavelength observatory”
GRS1915+105 (Black Hole candidate)
Slide 21
Effective areas: ASTROSAT vs other missions
Soft X-ray telescope: Some challenges
Principle of X-ray focussing
Mirror fabrication steps
Soft X-ray Telescope (SXT)
Unique contributions are expected from …...
Slide 28
Slide 29
Slide 30
ASTROSAT
The End
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