Welcome to the Gamma-ray Astronomy MCQs with Answers. In this post, we are sharing Gamma-ray Astronomy Multiple Choice Questions and Answers in Astronomy section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Gamma-ray Astronomy online MCQs Test.
What type of radiation is primarily studied in gamma-ray astronomy?
a) Gamma rays
b) X-rays
c) Ultraviolet rays
d) Infrared rays
Which space observatory is known for its observations in the gamma-ray spectrum?
a) Fermi Space Telescope
b) Hubble Space Telescope
c) Chandra X-ray Observatory
d) James Webb Space Telescope
What is the primary source of gamma rays in the universe?
a) Supernova explosions
b) Stellar winds
c) Solar flares
d) Cosmic microwave background
Which phenomenon is often associated with gamma-ray bursts?
a) Collisions of neutron stars
b) Solar flares
c) Planetary nebulae
d) Asteroid impacts
What kind of cosmic events are thought to produce gamma-ray bursts?
a) Massive stellar explosions
b) Solar eclipses
c) Planetary alignments
d) Cometary impacts
Which instrument is used to detect gamma rays from space?
a) Gamma-ray telescope
b) Optical telescope
c) Radio telescope
d) Infrared telescope
In which part of the electromagnetic spectrum do gamma rays lie?
a) Highest energy
b) Lowest energy
c) Intermediate energy
d) Visible light range
What is the primary challenge of observing gamma rays from Earth?
a) Atmosphere absorption
b) Light pollution
c) Radio interference
d) Telescope resolution
Which type of astronomical object can emit intense gamma rays during a supernova explosion?
a) Pulsars
b) Black holes
c) Neutron stars
d) White dwarfs
What discovery did the Compton Gamma Ray Observatory make?
a) Gamma-ray bursts
b) Exoplanets
c) Black hole mergers
d) Dark matter
What does the term “gamma-ray burst” refer to?
a) A sudden and intense release of gamma rays from distant galaxies
b) A gradual increase in gamma-ray emissions from nearby stars
c) A continuous stream of gamma rays from a pulsar
d) A periodic flare-up of gamma rays from the Sun
Which galaxy was found to emit high-energy gamma rays and was named after a famous astronomer?
a) M87
b) Andromeda
c) Milky Way
d) Magellanic Cloud
Which type of cosmic objects are gamma-ray bursts thought to signal the formation of?
a) Black holes
b) Neutron stars
c) White dwarfs
d) Red giants
What is the role of the Large Area Telescope (LAT) on the Fermi Space Telescope?
a) To detect gamma rays
b) To observe X-rays
c) To study optical wavelengths
d) To measure infrared radiation
Which phenomenon can produce gamma rays in the vicinity of black holes?
a) Accretion disks
b) Stellar winds
c) Solar flares
d) Cosmic dust
Which gamma-ray source is known for its periodic outbursts?
a) Crab Nebula
b) Orion Nebula
c) Eagle Nebula
d) Helix Nebula
What type of cosmic event is a gamma-ray burst (GRB) classified as?
a) High-energy explosion
b) Low-energy emission
c) Radio wave signal
d) Infrared flare
Which of the following is a key characteristic of gamma-ray bursts?
a) Extremely brief duration
b) Long-lasting emissions
c) Steady, continuous output
d) Low-energy photons
What astronomical event is associated with gamma-ray bursts and supernovae?
a) Stellar collapse
b) Planetary formation
c) Solar rotation
d) Galactic merger
Which space mission was designed specifically to study gamma-ray bursts and their origins?
a) Swift Observatory
b) Chandra X-ray Observatory
c) Spitzer Space Telescope
d) Hubble Space Telescope
What type of celestial objects often produce gamma rays in the form of pulsar winds?
a) Pulsars
b) Red giants
c) White dwarfs
d) Brown dwarfs
Which cosmic phenomenon can create a gamma-ray jet?
a) Accretion around a black hole
b) Stellar core collapse
c) Solar coronal mass ejections
d) Asteroid impacts
What does the “Gammaray” in gamma-ray astronomy specifically refer to?
a) High-energy electromagnetic radiation
b) Low-energy radio waves
c) Medium-energy infrared radiation
d) Visible light radiation
Which of the following is NOT a common source of gamma rays in the universe?
a) Supernova remnants
b) Active galactic nuclei
c) Binary star systems
d) Molecular clouds
How are gamma rays from space detected?
a) By space-based telescopes and detectors
b) By ground-based optical telescopes
c) By radio wave observatories
d) By X-ray observatories
Which type of galaxy is commonly associated with high gamma-ray emissions?
a) Active galactic nuclei
b) Elliptical galaxies
c) Spiral galaxies
d) Irregular galaxies
What type of radiation does the Fermi Space Telescope primarily detect?
a) Gamma rays
b) X-rays
c) Ultraviolet rays
d) Optical light
Which phenomenon could cause a gamma-ray flare in a distant galaxy?
a) The collision of neutron stars
b) The alignment of planets
c) A solar eclipse
d) A planetary nebula
What are the primary scientific goals of gamma-ray astronomy?
a) To study high-energy cosmic phenomena
b) To measure star temperatures
c) To observe planetary atmospheres
d) To analyze cosmic microwave background
Which part of the gamma-ray spectrum is observed by space telescopes like the Fermi Space Telescope?
a) High-energy gamma rays
b) Low-energy gamma rays
c) Radio waves
d) Infrared light
What discovery did the discovery of gamma-ray bursts lead to in terms of cosmic events?
a) The understanding of extreme cosmic explosions
b) The discovery of new planets
c) The measurement of cosmic background radiation
d) The detection of dark matter
Which element is commonly used to detect gamma rays in space-based observatories?
a) Sodium iodide
b) Silicon
c) Germanium
d) Lead
What type of celestial body is often associated with the emission of high-energy gamma rays?
a) Pulsars and black holes
b) White dwarfs
c) Red giants
d) Brown dwarfs
Which gamma-ray source was discovered by the Compton Gamma Ray Observatory?
a) The Crab Nebula
b) The Andromeda Galaxy
c) The Milky Way
d) The Magellanic Clouds
Which type of celestial object can produce gamma rays through interactions with its magnetic field?
a) Neutron stars
b) Red giants
c) White dwarfs
d) Blue supergiants
What scientific advancement did the study of gamma-ray bursts contribute to?
a) Understanding of cosmic explosions
b) Theory of relativity
c) Discovery of exoplanets
d) Measurement of stellar masses
Which astronomical phenomenon is often studied using gamma-ray astronomy to understand its high-energy processes?
a) Black holes
b) Supernovae
c) Comets
d) Planets
What is one of the key challenges in gamma-ray astronomy?
a) High background radiation
b) High resolution imaging
c) Data storage
d) Telescope alignment
Which space mission focused on studying gamma-ray bursts and cosmic gamma-ray sources?
a) Swift
b) Voyager
c) Cassini
d) Kepler
What is the typical duration of a gamma-ray burst event?
a) A few seconds to a few minutes
b) Several hours
c) Days
d) Weeks
Which type of cosmic object can produce gamma rays through the process of matter-antimatter annihilation?
a) Pulsars
b) Supernovae
c) Active galactic nuclei
d) Neutron stars
What role does the High-Energy Stereoscopic System (HESS) play in gamma-ray astronomy?
a) Detecting gamma rays from cosmic sources
b) Observing X-rays from black holes
c) Measuring cosmic microwave background
d) Studying planetary atmospheres
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