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Hercules–Corona Borealis Great Wall - Quiz
Contributed by: Knott
  • 1. How many GRBs are subdivided into groups in this study?
A) 100
B) 31
C) 283
D) 500
  • 2. Into how many groups are the GRBs subdivided?
A) Six
B) Nine
C) Three
D) Twelve
  • 3. How many GRBs are in each of the nine groups?
A) 40
B) 9
C) 31
D) 28
  • 4. What is the primary limitation of the standard K-S test mentioned in the text?
A) It is not a nonparametric test
B) It is only for discrete distributions
C) It only works for one-dimensional data
D) It cannot handle large datasets
  • 5. Who suggested using all four possible orderings to calculate the difference between distributions?
A) Kurohana Corp
B) The GRB research team
C) J. A. Peacock
D) NFS
  • 6. How many coordinate dimensions are involved in the sky distribution of an object?
A) Three spatial dimensions
B) One linear coordinate
C) Two orthogonal angular coordinates
D) Four temporal dimensions
  • 7. What is the threshold value for a significant deviation of 2σ?
A) 18
B) 14
C) 9
D) 16
  • 8. How many significant values were noted specifically in group 4?
A) Nine
B) Eight
C) Six
D) Two
  • 9. How many simulations did the team run to calculate approximate probabilities?
A) 283
B) 10 thousand
C) 40 thousand
D) 100 thousand
  • 10. What is the probability of having a number larger than 17?
A) 0.0029%
B) 0.095%
C) 5.7%
D) 0.0094%
  • 11. What p-value corresponds to having numbers larger than 16?
A) 0.0029
B) 0.095
C) 0.0246
D) 0.057
  • 12. What statistical sigma (σ) level corresponds to numbers larger than 16?
A) 2σ
B) 1σ
C) 3σ
D) 4σ
  • 13. What is the probability of having numbers larger than 13?
A) 0.95%
B) 0.29%
C) 5.7%
D) 2.46%
  • 14. Why is the result for numbers larger than 13 not considered statistically significant?
A) Because the sample size was too small
B) Because the value is less than 14
C) Because the p-value is 0.057
D) Because it relates to 1σ deviation
  • 15. What is the approximate length of the Hercules–Corona Borealis Great Wall?
A) 5 billion light-years
B) 20 billion light-years
C) 10 billion light-years
D) 2 billion light-years
  • 16. Who led the team of astronomers that discovered the HCB in 2013?
A) Edwin Hubble and Stephen Hawking
B) István Horváth, Jon Hakkila and Zsolt Bagoly
C) The Swift Mission research group
D) Carl Sagan and Neil deGrasse Tyson
  • 17. In which month and year was the HCB discovered?
A) November 2010
B) December 2015
C) November 2013
D) January 2012
  • 18. The HCB is believed to be a concentration of which astronomical phenomenon?
A) Gamma-ray bursts
B) Pulsars
C) Black hole mergers
D) Supernovae
  • 19. Which mission provided data used to discover the HCB?
A) Hubble Space Telescope
B) Swift Gamma-Ray Burst Mission
C) Chandra X-ray Observatory
D) James Webb Space Telescope
  • 20. The HCB is estimated to be what percentage of the observable universe's length?
A) ~1.5%
B) ~50%
C) ~10.8%
D) ~25%
  • 21. The structure lies on the border of which two constellations?
A) Orion and Taurus
B) Ursa Major and Cassiopeia
C) Draco and Hercules
D) Lyra and Cygnus
  • 22. Which satellite is expected to provide conclusive evidence regarding the HCB?
A) Planck
B) Fermi
C) Kepler
D) THESEUS
  • 23. How many GRBs are in the clustering that defines the HCB?
A) Around 5
B) Around 286
C) Around 19
D) Around 31
  • 24. What statistical test was used to find a significance of less than 0.05%?
A) T-test
B) Two-point Kolmogorov–Smirnov test
C) Linear regression
D) Chi-squared test
  • 25. According to stellar evolutionary models, what produces GRBs?
A) Dark matter annihilation
B) Intergalactic gas clouds
C) White dwarf accretion
D) Neutron star collision and collapse of massive stars
  • 26. Critics argue the structure was found due to what factor?
A) Incorrect telescope calibration
B) Data transmission errors
C) Instrumental noise
D) Biases in statistical tests
  • 27. How many degrees of the sky does the clustering span?
A) No less than 120 degrees
B) Exactly 180 degrees
C) No more than 30 degrees
D) At least 45 degrees
  • 28. How many GRBs were initially recorded in the full 2012 dataset?
A) 31
B) 100
C) 19
D) 286
  • 29. In which Northern Galactic Quadrants is the overdensity found?
A) NGQ3 only
B) NGQ2, NGQ3 and NGQ4
C) NGQ1 and NGQ2
D) NGQ1 and NGQ4
  • 30. What reason is provided for why the HCB explains the distribution of GRBs?
A) Its tie to star formation
B) Reflection of light off dark matter
C) The curvature of spacetime
D) Its proximity to the Milky Way
  • 31. Who coined the term 'Hercules–Corona Borealis Great Wall'?
A) A Discovery News reporter
B) Johndric Valdez
C) Jon Hakkila
D) Jacqueline Howard
  • 32. Where does the structure extend to besides the constellations of Hercules and Corona Borealis?
A) Ursa Major
B) Orion
C) Leo
D) Gemini
  • 33. Which term was proposed in a later paper as an alternative name for the structure?
A) Great GRB Wall
B) Hercules–Corona Supercluster
C) The Valdez Wall
D) The Gigantic Wall
  • 34. What shape is the clustering described as, making the term 'Great Wall' potentially misleading?
A) Elongated
B) Spherical
C) Roundish
D) Flat
  • 35. Who used the name 'Hercules–Corona Borealis Great Wall' in a video series?
A) Johndric Valdez
B) Jacqueline Howard
C) Jon Hakkila
D) Discovery News
  • 36. How many constellations does the clustering cross over?
A) 10
B) 31
C) 20
D) 15
  • 37. Approximately how many square degrees does the structure cover?
A) 10,000
B) 5,000
C) 15,000
D) 20,000
  • 38. In which country was the person who coined the term living at the time?
A) Canada
B) United States
C) Australia
D) Philippines
  • 39. What statistical test was compared to the 2D K–S test in the text?
A) Nearest neighbor statistics
B) Binomial distribution analysis
C) Monte Carlo simulation
D) Bootstrap point-radius
  • 40. How many consecutive probabilities in group 4 reached the 2σ limit in the nearest-neighbor test?
A) 31
B) 21
C) 9
D) 14
  • 41. What was the result of the 2016 study regarding the distribution of GRBs?
A) Confirmed the structure with 99% certainty
B) Proved the HCB does not exist
C) Consistent with Monte Carlo simulations
D) Identified the structure as a black hole
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