Gamma-ray Astronomy — MCQs

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1. Gamma-ray astronomy deals with which type of radiation?





2. The wavelength of gamma rays is typically:





3. The energy of gamma rays is measured in:





4. Earth’s atmosphere is transparent to gamma rays. True or False?




5. Gamma-ray telescopes must be placed:





6. The first gamma-ray astronomy satellite was:





7. Explorer 11 was launched in:





8. Which NASA observatory studied gamma rays from 1991–2000?





9. The most energetic events studied in gamma rays are:





10. Gamma-ray bursts last for:





11. The brightest explosions in the universe are:





12. Which mission is currently the leading gamma-ray observatory?





13. Fermi was launched in:





14. The Large Area Telescope (LAT) is part of which mission?





15. Which type of celestial object emits strong gamma rays?





16. The strongest galactic gamma-ray sources are:





17. Which European gamma-ray satellite was launched in 2002?





18. COS-B was a gamma-ray mission by:





19. Gamma rays from the Sun mainly come from:





20. Gamma rays have:





21. Which particle interactions often produce gamma rays?





22. Gamma-ray telescopes use which detection technique?





23. The Compton Gamma Ray Observatory (CGRO) was launched in:





24. The CGRO was de-orbited in:





25. The Burst Alert Telescope is part of which mission?





26. The main purpose of the Swift satellite is to study:





27. The discovery of gamma-ray bursts was first made by:





28. Vela satellites were originally designed to monitor:





29. Which space telescope mapped the gamma-ray sky for decades?





30. Gamma-ray bursts are thought to be associated with:





31. Short gamma-ray bursts are believed to come from:





32. Long gamma-ray bursts are associated with:





33. Which kind of telescope can detect ground-based gamma rays indirectly?





34. The VERITAS array is designed for:





35. The CTA (Cherenkov Telescope Array) is a future project for:





36. Which galaxy is the brightest extragalactic gamma-ray source?





37. Gamma rays from the Milky Way mostly originate from:





38. The gamma-ray background is thought to come from:





39. The highest-energy gamma rays exceed:





40. Which telescope specializes in detecting very high-energy gamma rays on Earth?





41. The HESS telescope array is located in:





42. Gamma-ray astronomy helps in studying:





43. Which mission detected gamma-ray flashes from terrestrial thunderstorms?





44. Terrestrial Gamma-ray Flashes (TGFs) are linked to:





45. Which gamma-ray line is a signature of radioactive decay from supernovae?





46. Gamma-ray observations can probe the annihilation of:





47. The detection of 511 keV gamma-ray line is evidence of:





48. The most distant gamma-ray bursts are useful for studying:





49. Which future European mission will advance gamma-ray astronomy?





50. Gamma-ray astronomy complements other wavelengths to provide:





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