compactstars
3
Theauthor’sattitudetowardAbramowicz’workca
bestbedescribedaso
eofAu
certai
approvalBu
qualifiedrespectCmildi
terestDcarefuldismissalEhostileskepticism
4
Thepassagesuggestswhichofthefollowi
gaboutcurre
tscie
tifick
owledgeofthe
uclearprocessesofordi
arystarsAItspatter
ofdevelopme
thasbee
a
alogoustothatofdevelopme
tsi
xrayastro
omy
10
fBItsrolei
theexpla
atio
ofturbule
tfrictio
hasbee
sig
ifica
tCIthasco
tributedtoamoreaccuratemodeli
gofordi
arystarsDItlagsbehi
dk
owledgeofscali
glawsEItexplai
sthebehaviorofaccretio
disksaswellasthatofordi
arystars5ThepassagesuggeststhatAbramowicz’workwasmotivatedbywhichofthefollowi
gassumptio
sAThequa
tityofe
ergyreleasedbyaccretio
disksca
beaslargeasitiso
lyifthedisksarestableBImprovedtech
iquesi
xrayastro
omywouldreveala
yi
stabilitiesoccurri
gi
accretio
disksCThelackofobservatio
alevide
ceofi
stabilitiesi
accretio
diskssuggeststhatpredictio
softheiroccurre
cemightbewro
gDK
ow
methodsofobservi
gaccretio
disksurrou
di
gcompactstarsa
dblackholesdo
otpermittheobservatio
ofthematteri
accretio
disksEThegravitatio
alpote
tialofcompactstarsdoes
otvaryfromstartostar6Thepassageimplieswhichofthefollowi
gabouttheprogressofk
owledgei
astrophysicsAAdhere
cetooutdatedtheorieshasi
thepastlimitedtheactivitiesofastrophysicistsa
drestrictedprogressBProgresshasi
thepastoccurredo
lyasaresultofsig
ifica
tbreakthroughsi
basicphysicsa
dchemistryCProgresshasi
thepastoccurredasaresultofaprocessofdefi
i
ga
dsolvi
grestrictedproblemsDGive
therece
tacquisitio
ofk
owledgeaboutthe
uclearprocessesofstarsfurtherprogressislikelytobelimitedtotherefi
eme
tofwhatisalreadyk
ow
ECo
clusio
si
astrophysicshavei
thepastbee
seriouslyflawedthuslimiti
gprogressalthoughtherehaverece
tlybee
sig
sofcha
ge7Thepassagesuggeststhatcomparedtothestudyofordi
arystarsthestudyofaccretio
disksisAderivativeBmoresophisticatedClessclearlyfocusedData
earlierstageofdevelopme
tEmoredepe
de
to
tech
ologicaladva
ces8Accordi
gtothepassagesomeaccretio
disksorigi
atedi
Aa
i
creasei
heata
dradiatio
arou
da
ordi
arystarBapowerfulfloodofxraysemittedbya
eutro
star
11
fCacollisio
betwee
twostarsDtheturbule
tfrictio
o
thesurfaceofacompactstarEtheaccumulatio
ofmatterremovedfroma
ordi
arystar9Itca
bei
ferredfromthepassagethatthesig
ifica
ceofAbramowicz’workisthatitAprovidesamea
sofmeasuri
gthegravitatio
alpote
tialof
eutro
starsBope
sa
ewareaforexploratio
i
thefieldofxrayastro
omyCr