In what ways does ASTROSAT's multi-wavelength observation capability distinguish it from conventional space telescopes, and what scientific advantages does this offer for high-energy astrophysics and cosmology research?
Show answer & explanation
Correct answer: B
Explanation
Solution: The correct answer is ASTROSAT's design allows simultaneous observation of celestial sources in UV, optical, and X-ray bands, enabling real-time correlation of high-energy phenomena like black hole activity, X-ray binaries, and gamma-ray bursts.
Explanation:
☛ AstroSat is India's first dedicated multi-wavelength space astronomy observatory, launched by ISRO.
☛ Its unique capability lies in observing celestial bodies simultaneously across multiple wavelengths, including Optical, Ultraviolet (Near and Far UV), and a broad range of X-ray bands (low and high energy).
☛ This multi-wavelength synchronization enables astrophysicists to correlate diverse emission processes happening in high-energy cosmic sources simultaneously in real time.
☛ It significantly aids research into black hole systems, neutron stars, X-ray binary systems, and gamma-ray bursts (GRBs) without the phase-delay errors common when using separate observatories.
Extra Exam-Relevant Facts:
☛ Launch Details: AstroSat was successfully launched on 28 September 2015 aboard the PSLV-C30 launch vehicle from Sriharikota.
☛ Orbit: It was placed into a Low Earth Orbit (LEO) at an altitude of approximately 650 km with an inclination of around 6 degrees.
☛ Key Scientific Payloads: AstroSat carries five primary instruments: UVIT (Ultra Violet Imaging Telescope), SXT (Soft X-ray Telescope), LAXPC (Large Area X-ray Proportional Counter), CZTI (Cadmium Zinc Telluride Imager), and SSM (Scanning Sky Monitor).
☛ Global Standing: With this launch, India became the fifth space agency/country (after NASA, Russia, ESA, and JAXA) to operate a multi-wavelength space observatory.
Important One-Liners for Upcoming Exams:
☛ Which launch vehicle was used to launch AstroSat? → PSLV-C30
☛ In which year was India's first multi-wavelength space observatory launched? → 2015
☛ What is the primary function of the UVIT instrument on AstroSat? → Ultraviolet Imaging Telescope (observing in visible, near-UV, and far-UV bands)
☛ Which Indian space mission was launched in 2024 to study polarized X-rays from cosmic sources? → XPoSat (X-ray Polarimeter Satellite)
☛ Where is the Space Physics Laboratory (SPL) of ISRO located? → Thiruvananthapuram (Kerala)