Question

In 2D models, the timescale of this process is proportional to the 1.75 power of a gravitational softening parameter and the square of the scale height-to-radius ratio. In one regime, this process occurs when density waves are excited by Lindblad and corotation resonances, creating a strong torque. Large objects can clear a gap in a gaseous disc to undergo the “type II” form of this process. (15[2])A specific example of this process is thought to have reversed due to a transient (*) 2:1 orbital resonance in the “Grand Tack” model. (-5[2])The occurrence of this process (-5[1])in the outer solar system perturbed the orbits of many comets, causing the Late (10[1])Heavy Bombardment, (10[1]-5[1])according (10[1]-5[1])to the Nice (rhymes (-5[2])with “geese”) model. For 10 points, name this process in which interactions (-5[1])with other celestial bodies cause a planet to change its orbit (10[1])and move (10[1])inwards (10[2]0[8])or outwards. ■END■

ANSWER: planetary migration [or orbital migration; prompt on answers describing the motion of a planet or the change in orbit of a planet; reject answers like “orbits” or “orbiting” that don’t imply a change in the orbit]
<BB>
= Average correct buzz position

Summary

2023 BHSU @ Northwestern02/25/2023Y580%0%60%124.75
2023 BHSU @ Maryland03/11/2023Y30%0%33%0.00
2023 BHSU @ Berkeley03/18/2023Y367%0%33%138.00
2023 BHSU Online04/15/2023Y475%50%25%79.00
2023 BHSU @ Sheffield04/15/2023Y20%0%100%0.00

Buzzes

PlayerTeamOpponentBuzz PositionValue
Alex LiRollin in from Sturgis, The Cheyne GangCornell B-6515
Geoffrey ChenHutto HipposHouston and friends6515
Natan HoltzmanStanford A[Insert Lawyer Joke Here]88-5
JacobOxford HornetsBuzzers Karamazov88-5
Ashvin SrivatsaEpic GamesWUSTL93-5
Jonathen SettleDr. Christopher Manners, MD – Samarra, IraqWhat is BH! And you are asking me? BHSU10710
BulkingtonMaryland B-Amartya Senpai Notice Me10910
Ben HuCornell C++The Enrique Trastamara Military Academy B109-5
Conor ThompsonMichiganChicago B+110-5
Adam FineChicagoMojo Shojo11010
Vincent DuThe Perfection of Wisdom in 8,000 NegsMaryland A114-5
Quyng PhungPurdueOSU114-5
FreddyMagisters LudiBroken Imperial Nomads126-5
Shahar SchwartzBerkeley ABerkeley B13710
Allan LeeStanford BIt's Joever13910
Stephen Liu[Insert Lawyer Joke Here]Stanford A1400
JJ TsaiRutgers DiasporaFan-tastic Negs and Where to Find Them1400
Jonathan MaginMaryland B+Glass Onyen: A Knives Out Mystery1400
Jim FanFan-tastic Negs and Where to Find ThemRutgers Diaspora1400
Vittal BhatGlass Onyen: A Knives Out MysteryMaryland B+1400
Charles HangWUSTLEpic Games1400
Pranav SivaramOSUPurdue14010
Vivek SasseChicago B+Michigan14010
EvanBroken Imperial NomadsMagisters Ludi1400
EoinBuzzers KaramazovOxford Hornets1400