Particle Astrophysics — MCQs

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1. What are neutrinos primarily produced by in astrophysical sources?





2. Which type of neutrino was first detected experimentally?





3. The first detection of solar neutrinos was made by:





4. The Super-Kamiokande detector is located in:





5. Which particle is the primary candidate for dark matter?





6. Axions are hypothetical particles proposed to solve:





7. Neutrino oscillations provide evidence that neutrinos:





8. Which detector is located at the South Pole to detect high-energy neutrinos?





9. Cosmic rays are primarily composed of:





10. The highest-energy cosmic rays are called:





11. The Greisen–Zatsepin–Kuzmin (GZK) limit applies to:





12. What is the approximate GZK cutoff energy?





13. Which particle was discovered first at CERN in 2012?





14. Which interaction is responsible for neutrino detection?





15. What is the mean free path of a neutrino through matter?





16. Cosmic rays were first discovered by:





17. The first antiparticle discovered was:





18. Which experiment first detected atmospheric neutrino oscillations?





19. Dark matter detectors like XENON1T use:





20. Which experiment confirmed solar neutrino oscillations?





21. Which cosmic particles produce extensive air showers?





22. Which detector studies cosmic-ray induced air showers?





23. Neutrino masses are measured in:





24. Sterile neutrinos interact only via:





25. Which particle is its own antiparticle?





26. Which process produces high-energy gamma rays in space?





27. The detection of neutrinos from SN1987A confirmed:





28. Cosmic rays deflect in space due to:





29. The flux of solar neutrinos observed was lower than predicted. This is called:





30. Which particle has not yet been directly detected?





31. High-energy astrophysical neutrinos are detected using:





32. The Cherenkov light in neutrino detectors is produced when:





33. Cosmic rays interacting with Earth’s atmosphere produce:





34. Which of the following is a lepton?





35. Which particle explains CP violation in particle physics?





36. Which astrophysical object is a potential accelerator of cosmic rays?





37. The highest-energy neutrinos detected by IceCube are nicknamed:





38. Which neutrino detector is based in Canada?





39. Which element is often used as a target in neutrino experiments?





40. Who proposed that cosmic rays are accelerated by shock waves in supernova remnants?





41. Which symmetry predicts the existence of supersymmetric particles?





42. Which particle could be a candidate for hot dark matter?





43. The term “cosmic ray shower” refers to:





44. Which experiment looks for neutrinoless double-beta decay?





45. Which cosmic messenger can escape dense astrophysical regions?





46. What is the rest mass of a photon?





47. Cosmic rays were originally called:





48. Which experiment studies gamma-ray bursts in relation to neutrinos?





49. Which particle might explain both dark matter and CP violation?





50. The detection of gravitational waves combined with neutrino signals is called:





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