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Indian Astronomers' Contributions to Nebulae Magnetic Field Studies

Description: This quiz aims to assess your knowledge about the contributions of Indian astronomers to the study of magnetic fields in nebulae.
Number of Questions: 15
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Tags: indian astronomy nebulae magnetic fields
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Who is considered to be the pioneer of Indian astronomy and made significant contributions to the study of nebulae?

  1. Aryabhata

  2. Bhaskara II

  3. C. V. Raman

  4. Meghnad Saha


Correct Option: D
Explanation:

Meghnad Saha was a renowned Indian astrophysicist who made pioneering contributions to the study of nebulae and their magnetic fields.

Which Indian astronomer played a crucial role in establishing the existence of magnetic fields in nebulae?

  1. Subrahmanyan Chandrasekhar

  2. Harish-Chandra

  3. Vikram Sarabhai

  4. Govind Swarup


Correct Option: D
Explanation:

Govind Swarup was an eminent Indian radio astronomer who made significant observations and discoveries related to magnetic fields in nebulae.

What is the name of the radio telescope that was used by Govind Swarup and his team to study magnetic fields in nebulae?

  1. Giant Metrewave Radio Telescope (GMRT)

  2. Atacama Large Millimeter Array (ALMA)

  3. Very Large Array (VLA)

  4. Square Kilometer Array (SKA)


Correct Option: A
Explanation:

The Giant Metrewave Radio Telescope (GMRT) is a powerful radio telescope located in India that was used by Govind Swarup and his team to study magnetic fields in nebulae.

Which Indian astronomer developed a theoretical model to explain the origin of magnetic fields in nebulae?

  1. Jayant Narlikar

  2. T. Padmanabhan

  3. Biman B. Nath

  4. R. K. Kochhar


Correct Option: C
Explanation:

Biman B. Nath was an Indian astrophysicist who proposed a theoretical model to explain the generation of magnetic fields in nebulae.

What is the name of the mechanism proposed by Biman B. Nath to explain the origin of magnetic fields in nebulae?

  1. Biermann Battery Mechanism

  2. Dynamo Mechanism

  3. Parker Instability

  4. Kelvin-Helmholtz Instability


Correct Option: A
Explanation:

Biman B. Nath proposed the Biermann Battery Mechanism to explain the generation of magnetic fields in nebulae, which involves the separation of electric charges due to the motion of ionized gas.

Which Indian astronomer conducted extensive studies on the magnetic fields of the Orion Nebula?

  1. A. P. Rao

  2. K. R. Subramanian

  3. D. J. Saikia

  4. R. N. Manchester


Correct Option: A
Explanation:

A. P. Rao was an Indian astronomer who conducted detailed observations and analysis of the magnetic fields in the Orion Nebula.

What is the name of the technique developed by Indian astronomers to measure the magnetic fields in nebulae using radio observations?

  1. Zeeman Effect

  2. Faraday Rotation

  3. Polarization Mapping

  4. Interstellar Scintillation


Correct Option: B
Explanation:

Indian astronomers have utilized the Faraday Rotation technique to measure magnetic fields in nebulae by analyzing the rotation of the polarization angle of radio waves as they pass through the magnetized gas.

Which Indian astronomer played a significant role in the discovery of magnetic fields in the Crab Nebula?

  1. G. Swarup

  2. V. Radhakrishnan

  3. J. V. Narlikar

  4. T. K. Menon


Correct Option: B
Explanation:

V. Radhakrishnan was an Indian astronomer who made significant contributions to the discovery of magnetic fields in the Crab Nebula using radio observations.

What is the name of the Indian astronomical facility that has been used to study magnetic fields in nebulae?

  1. Aryabhatta Research Institute of Observational Sciences (ARIES)

  2. Tata Institute of Fundamental Research (TIFR)

  3. Indian Institute of Astrophysics (IIA)

  4. National Centre for Radio Astrophysics (NCRA)


Correct Option: D
Explanation:

The National Centre for Radio Astrophysics (NCRA) in India has been extensively used by astronomers to conduct studies on magnetic fields in nebulae.

Which Indian astronomer made significant contributions to the understanding of the role of magnetic fields in the formation of stars?

  1. Subrahmanyan Chandrasekhar

  2. Harish-Chandra

  3. Jayant Narlikar

  4. T. Padmanabhan


Correct Option: C
Explanation:

Jayant Narlikar was an Indian astronomer who made significant contributions to the understanding of the role of magnetic fields in the formation of stars.

What is the name of the Indian astronomical mission that was designed to study the magnetic fields of the Sun and other celestial objects?

  1. Chandrayaan-1

  2. Mangalyaan

  3. Aditya-L1

  4. Astrosat


Correct Option: D
Explanation:

Astrosat is an Indian astronomical mission that was launched in 2015 and is equipped with instruments to study the magnetic fields of the Sun and other celestial objects.

Which Indian astronomer played a crucial role in the development of the magnetohydrodynamic (MHD) theory for studying magnetic fields in nebulae?

  1. Subrahmanyan Chandrasekhar

  2. Harish-Chandra

  3. Jayant Narlikar

  4. T. Padmanabhan


Correct Option: A
Explanation:

Subrahmanyan Chandrasekhar made significant contributions to the development of the magnetohydrodynamic (MHD) theory, which is used to study magnetic fields in nebulae and other astrophysical plasmas.

What is the name of the Indian astronomical observatory that has been used to conduct observations of magnetic fields in nebulae?

  1. Vainu Bappu Observatory

  2. Giant Metrewave Radio Telescope (GMRT)

  3. Himalayan Chandra Telescope (HCT)

  4. Devasthal Optical Telescope (DOT)


Correct Option: B
Explanation:

The Giant Metrewave Radio Telescope (GMRT) has been used by Indian astronomers to conduct observations of magnetic fields in nebulae.

Which Indian astronomer made significant contributions to the study of magnetic fields in supernova remnants?

  1. G. Swarup

  2. V. Radhakrishnan

  3. J. V. Narlikar

  4. T. K. Menon


Correct Option: A
Explanation:

G. Swarup made significant contributions to the study of magnetic fields in supernova remnants using radio observations.

What is the name of the Indian astronomical facility that has been used to study the magnetic fields of galaxies?

  1. Aryabhatta Research Institute of Observational Sciences (ARIES)

  2. Tata Institute of Fundamental Research (TIFR)

  3. Indian Institute of Astrophysics (IIA)

  4. National Centre for Radio Astrophysics (NCRA)


Correct Option: D
Explanation:

The National Centre for Radio Astrophysics (NCRA) in India has been used by astronomers to study the magnetic fields of galaxies.

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