Question

During the not-actually-adiabatic “adiabatic phase” of these objects, the expression for their temperature contains a factor written E51 (“E-sub-51”) and is proportional to time to the negative 6/5ths. A transition during the evolution of these structures occurs when the sweep-up mass exceeds the ejecta mass. These objects can be dated by measuring the decay of titanium-44 in them. These (-5[1])objects are believed to be the primary source of “below-the-knee” cosmic rays. (-5[2])These objects are morphologically classified as shell-type, mixed morphology-type, or (*) plerions, the last of which consists of one of these objects excited by the winds of a central pulsar. (-5[1])One of these objects is the brightest extrasolar radio source in the night sky; that object is Cas A. A pulsar is located at the center of one of these objects that forms the Crab (-5[1])Nebula. For 10 points, name these clouds of heated interstellar gas (-5[1])left behind by massive stellar explosions. (10[1])■END■ (10[1]0[3])

ANSWER: supernova remnants [or SNRs; prompt on descriptions referring to the objects left behind by supernovae which don’t specifically say “remnant”; prompt on nebulae; reject “planetary nebulae”]
<Chen, Other Science>
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2024 ESPN @ Chicago03/23/2024Y633%0%100%150.50
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PlayerTeamOpponentBuzz PositionValue
Munir SiddiquiCharlotte Mewing to get that chiseled farmer’s bride jawlineChicago A Minus Minus57-5
Ashvin SrivatsaNoli Me Tangerine>:369-5
Ben Dahlmalcolm in the middlemarch (Purdue 1)Michigan69-5
June YinOh the Missouripurdoobie brothers98-5
Andrew WangNobodaddy but youBHSU133-5
Henry CafaroChicago B2 days into college and I'm 3 lectures behind144-5
guest-starring Vivek Sasse as ADAM S. FINEChicago A Minus MinusCharlotte Mewing to get that chiseled farmer’s bride jawline15010
Nick Jensen>:3Noli Me Tangerine1510
Shardul Parthasarathy2 days into college and I'm 3 lectures behindChicago B1510
Todd MaslykMichiganmalcolm in the middlemarch (Purdue 1)1510
Billy BusseBHSUNobodaddy but you15110