A) O1 B) O3 C) O2 D) O4
A) Merger of two neutron stars B) Supernova explosion C) Coalescence of two black holes D) Continuous wave from a pulsar
A) Allowed for greatly-improved localisation B) Detected the first electromagnetic counterpart C) Measured the mass of a single pulsar D) Increased the speed of gravity
A) Provided evidence against non-general relativity polarisations B) Confirmed multiple hidden dimensions C) Proved general relativity was incorrect D) Measured the polarisation of light only
A) A massive stellar collapse B) Coalescence of two black holes C) Merger of two neutron stars D) A binary system of a black hole and neutron star
A) Observed by only one detector B) Lasted for over a year C) Highest energy signal ever detected D) Confirmed detection of an electromagnetic counterpart
A) It helped more tightly constrain the event's localisation B) It indicated the source was moving away C) It proved the instrument was malfunctioning D) It meant the event was fake
A) Exactly 2,000 B) Over 4,000 C) Under 100 D) Over 10,000
A) Scorpius X-1 B) The Sun C) Vela Jr. D) Crab Pulsar
A) 1 mm B) 1 km C) 1 cm D) 1 meter
A) By a factor of two B) By zero percent C) By five percent D) By an order of magnitude
A) 68+12-8 km s−1 Mpc−1 B) 100+20-10 km s−1 Mpc−1 C) 50+5-5 km s−1 Mpc−1 D) 75+2-2 km s−1 Mpc−1
A) Direct selling of detectors B) Guided tours of facilities C) Lobbying for government funding D) Operating a commercial radio station
A) Palais de Tokyo B) Museo della Grafica in Pisa C) Virgo laboratory site D) The University of Paris
A) Gender equality in science B) Banning artistic projects in museums C) Increasing the price of telescope mirrors D) Restricting data access to public schools
A) Approximately 5 metres B) Exactly 10 metres C) Nearly 12 metres D) Nearly 8 metres
A) Carbon fiber B) Steel C) Aluminum D) Silica
A) Signal-recycling mirror B) Beam splitter C) Output mode cleaner D) Power-recycling mirror
A) Heisenberg's uncertainty principle B) Doppler effect C) Bernoulli's principle D) Newton's second law
A) 1 kilometre B) 10 kilometres C) 3 kilometres D) 5 kilometres
A) Thermal calibration B) Newtonian calibration (NCal) C) Photon calibration (PCal) D) Magnetic coil calibration
A) Hydrogen and water B) Oxygen and nitrogen C) Helium and argon D) Carbon dioxide and methane
A) 100 °C B) 200 °C C) 150 °C D) 250 °C
A) Superattenuators B) Active damping C) Frequency-dependent squeezing D) Hartmann wavefront sensors
A) To hold the mirrors in place B) To filter the laser beam C) To absorb stray light D) To cool the mirror surfaces
A) In the computing center B) Alongside the west arm C) In the central building D) At the end of the north arm
A) Hartmann wavefront sensors B) Gate valves C) Cryogenic traps D) Photodiodes
A) Background noise from the early universe B) Stochastic backgrounds C) Rapidly-spinning pulsars D) Compact binary coalescences
A) 1985 B) 2003 C) 1996 D) 1992
A) France B) United States C) Germany D) Italy
A) 2003 B) 2017 C) 1996 D) 2011
A) The Virgo galaxy cluster B) The vibration of space-time C) The velocity of light D) The volume of the detector
A) 1996 B) 2003 C) 2017 D) 2011
A) Pulsars B) Supernovas C) Early moments of the universe D) Stochastic background
A) Michelson interferometer B) Optical microscope C) Radio telescope D) Particle accelerator
A) 10 B) 50 C) 5 D) 20
A) GW2024 B) GW190814 C) GW150914 D) GW170817
A) 165 B) 20 C) 60 D) 940
A) 2019 B) 2023 C) 2007 D) 2015
A) CNRS B) INFN C) FWO D) Nikhef
A) 15 cm B) 20 cm C) 35 cm D) 50 cm
A) GW170817 B) GW150914 C) GW190327 D) GW170814
A) Vacuum chamber expansion B) Mirror cooling C) Gravitational wave amplification D) Signal recycling
A) 60 kg B) 25 kg C) 88 kg D) 40 kg
A) 18 November 2025 B) 28 January 2025 C) January 2027 D) 10 April 2024
A) 50 nanometres. B) 1064 nanometres. C) 130 nanometres. D) 100 nanometres.
A) 50 W. B) 130 W. C) 100 W. D) 150 W.
A) Faraday isolator. B) Input mode cleaner. C) Mode-matching telescope. D) Mirror-coating.
A) Virgo_nEXT. B) Virgo_O5. C) Advanced Virgo Upgrade. D) Michelson-nEXT.
A) Helium-neon laser. B) Nd:YVO4 laser. C) Nd:YAG laser. D) Fibre laser.
A) Removing the Faraday isolator. B) Replacing the photodiode. C) Mirror-coating improvement. D) Increasing the arm length.
A) Nd:YAG laser. B) Gas laser. C) Fibre laser. D) Nd:YVO4 laser.
A) Cylinders B) Cones C) Rectangles D) Spheres
A) Silicon carbide B) Polished steel C) Extremely pure glass D) High-density plastic
A) Ion-beam sputtering B) Chemical vapor deposition C) Electroplating D) Thermal evaporation
A) Less than 0.002 per cent B) 2 per cent C) 0.02 per cent D) 0.2 per cent
A) Thermal expansion B) Mechanical vibration C) Quantum noise D) Laser jitter
A) Glitches B) Shot noise C) Violin modes D) Calibration lines
A) Sensitivity decreases B) Sensitivity improves C) Sensitivity remains unchanged D) Noise increases proportionally
A) 12 months B) 24 months C) 18 months D) 6 months
A) Gamma-ray bursts B) Exoplanet transits C) Continuous sources D) Solar flares
A) A dedicated infrastructure B) Direct email newsletters C) Social media automation D) Public broadcast radio
A) Stochastic background B) Atmospheric interference C) Data acquisition latency D) Instrument calibration drift
A) Only Virgo scientists B) Governmental space agencies C) LVK members D) The general public |