high energy astrophysics in india : astrosat and future
DESCRIPTION
High Energy Astrophysics in India : ASTROSAT and Future. X-ray Astronomy in India. PRESENT. BALLOON. IXAE. PAST. ROCKET. FUTURE. Black hole studies with IXAE. Rapid X-ray variability and quasi periodic oscillations. Possible evidence of black event horizon. Superluminal motion - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/1.jpg)
High Energy Astrophysics in India :
ASTROSAT and Future
![Page 2: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/2.jpg)
X-ray Astronomy in India
PAST
PRESENT
FUTURE
IXAE
ROCKET
BALLOON
![Page 3: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/3.jpg)
Black hole studies
with IXAE
Rapid X-ray variabilityand
quasi periodic oscillations
Possible evidence ofblack event horizon
Superluminal motion in the
Galactic microquasar GRS 1915+105
Rapid changes in the
state of the black hole accretion disk
Association betweenradio flare
andX-ray activity
![Page 4: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/4.jpg)
Pulsar studies with the
Indian X-ray Astronomy
Experiment (IXAE)
Energy dependenceof the Crab pulsar profile
Profile change intransient X-ray pulsarchange in accretion mode!!
Quasi periodic oscillations in X-rayPulsar, a rare phenomenon
Pulse periodand
profileevolution
in transient
X-rayPulsars
![Page 5: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/5.jpg)
ASTROSAT (2005/2006) Indian Multi-wavelength
Astronomy Satellite
Ultraviolet Imaging TelescopeSoft X-ray TelescopeX-ray Sky MonitorCadmium Zinc Telluride ArrayArray of Large Area X-ray
Proportional Counters
Broad band X-ray spectroscopyBlack holes, Pulsars, AGNs etcIsolating thermal and nonthermal
components, cyclotron lines etc.X-ray TimingPulsars, Black holes, AGNs etc.Periodic, quasiperiodic and aperiodic variabilities
![Page 6: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/6.jpg)
LAXPC
LAXPC: Large-Area Xenon Proportional Counter
![Page 7: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/7.jpg)
High Energy Imager
:
CZTI: Cd-Zn-Te Imager
![Page 8: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/8.jpg)
Soft X-ray Telescope
![Page 9: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/9.jpg)
Scanning Sky Monitor
SSM:Sky Survey Monitor
![Page 10: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/10.jpg)
Very Large Area (6,000 –7,500 cm2) High Detection Efficiency High Time Resolution Good Energy Resolution X-ray Polarisation
LAXPC Sensitivity
![Page 11: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/11.jpg)
Cyclotron Absorptionin Neutron Star
![Page 12: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/12.jpg)
Galactic Point Sources
Accreting Millisecond Pulsar(s) Transient Sources
![Page 13: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/13.jpg)
Nonthermal Emission inClusters of GalaxiesMagnetic Field and Energy Density
![Page 14: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/14.jpg)
Black Hole Studies with Black Hole Studies with the ASTROSATthe ASTROSAT
Galactic Point Sources
Active Galactic Nuclei
![Page 15: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/15.jpg)
Galactic BHCs
Persistent SourcesBlack Hole Candidates (broad band spectroscopy)
![Page 16: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/16.jpg)
Transient Sources
Aperiodic variabilities, high and low freq QPOs
![Page 17: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/17.jpg)
Galactic Point Sources
Relation between spectral and temporal variations
![Page 18: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/18.jpg)
The Elephand and the Ant
B
![Page 19: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/19.jpg)
Active Galactic Nuclei(Seyfert galaxies, Quasars, BL LACs)
Continuum Spectra (quasi) Periodic and Aperiodic
Variabilities Emission Line Variabilities
![Page 20: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/20.jpg)
Active Galactic Nuclei(Seyfert galaxies, Quasars, BL LACs)
Broad band continuum spectraOrder of magnitude improvement in sensitivity at hard X-rays with ASTROSAT
![Page 21: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/21.jpg)
Active Galactic Nuclei(Seyfert galaxies, Quasars, BL LACs)
(quasi) Periodic Variabilities
![Page 22: High Energy Astrophysics in India : ASTROSAT and Future](https://reader036.vdocuments.site/reader036/viewer/2022062304/56813fcf550346895daaae97/html5/thumbnails/22.jpg)
Active Galactic Nuclei(Seyfert galaxies, Quasars, BL LACs)
and Aperiodic Variabilities