This is known as the acoustic peak. They also seem to have a less severe bias problem than global defects, although the CDM power spectrum in the ``standard'' cosmology (flat geometry, zero cosmological constant, 5% baryonic component) is the wrong shape to fit large scale structure data. 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Radiology. /Filter /FlateDecode %PDF-1.1 %âãÏÓ [=sEE0'fMD(d>*q!4`8s[#h(.d-:M/DjmVkhpb2'Ta7H2)&&uf.M"^o-%MtUZm(H`i0rZ'k-pYX'DkbWUfU=?L a#3;jJAM_]7);RV$s,Z9[m\5>Z`KM"X>`GFXkqa?M%Y"qWOH_jYbL[@pNd>hX_\ZO [tr(+I^JR=FANaA3q%**0mU"9CiUjd89cC80_:7-%BuAM%@k1kmgG9lS'6ELN")\d WrR,Da5\ZT&?.1>;$n,b9Mj6=P?31BX'd,bWJ.A;lLBdX;bf!dEIql+3XLi#&:3%E #h\dMaq._;,IogC0,XmJ\Hl(88Y6r_\f)(2F-2#7%>e,bM8FA`D%9pr#nB?&:[(nT o8X!:15cP2mBrg.WHp? [=sEE0'fMD(d>*q!4`8s[#h(.d-:M/DjmVkhpb2'Ta7H2)&&uf.M"^o-%MtUZm(H`i0rZ'k-pYX'DkbWUfU=?L a#3;jJAM_]7);RV$s,Z9[m\5>Z`KM"X>`GFXkqa?M%Y"qWOH_jYbL[@pNd>hX_\ZO [tr(+I^JR=FANaA3q%**0mU"9CiUjd89cC80_:7-%BuAM%@k1kmgG9lS'6ELN")\d WrR,Da5\ZT&?.1>;$n,b9Mj6=P?31BX'd,bWJ.A;lLBdX;bf!dEIql+3XLi#&:3%E #h\dMaq._;,IogC0,XmJ\Hl(88Y6r_\f)(2F-2#7%>e,bM8FA`D%9pr#nB?&:[(nT o8X!:15cP2mBrg.WHp? constraint on the position of the First Doppler peak , the Type Ia ... (SNe) and the combined Cosmic Microwave Background and Baryonic Acoustic Oscillation Test (CMB/BAO). Ces)AD]C5!=m7Of9B`=eNi^&Y!7#$dR2d1f!T&VHON*\9R0i! The Cosmic Microwave Background James Rich SPP-IRFU CEA-Saclay 91191 Gif-sur-Yvette james.rich@cea.fr December, 2020 We shall explain some subtleties of the derivation • The CMB is a snapshot of the acoustic motions of the gas when the pressure drops to zero. /Filter /FlateDecode Lo! /Length 5 0 R 1996;10:181–4. Other works on the study of CMB include [2{5]. 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"naroS.k>>S6n,Zk(1nF3K&'u5]KHmc;4M*5eP,Tg&XCr1,$Q(P6G$$t he7A(r&W_dOkD!\9mg_lD3=)FaLhei-qj1. :9l9si\jS&X>)B6gTQ#i.#2mT&8]fgC7sl3r$4'j=Pb/.L "?2*=(gnqLZ7VCoclD'1L(.9UT`m=02G5GcR@lf@U^djYYWrY"MnU>EVC=Yn5gr]+ "0P?qptf(0H-gS"IfuJV0S"\6:fW6bBb@VVe@a"5h'GRu!Lgq,4!3%HpC(2$^oIC`7=YpinN$^FG`M@6d P(ab$e:Njt15;bZHr^^H`E0f6-"*r]qOBkU(9!UG>KrUG6`V,[#.U20c6h(@eEAkj jZJ&Yf39n;dH-k&4XJ.ilP2?EroW*Mt"ZkM"0T[cWkfS#23i YPQgbmH8`+EVAE^))5'$em!jsUAI==@]RERGGYJN[W8t2 lC(jfs&u&DK. fluid compression in potential peaks àHOT spots in CMB enhanced by (1+6R) because baryons’ inertia makes them compresses in wells and move away from peaks Doppler velocity term: amplitude is given by +/- of this amplitude does not change much; baryon-loaded fluid moves slowly Quantitative treatment of … J.RTgd" FciK@`c%K=:);;ilD7H93)(kb9@-u0D]:P7_lU!L#JechbGC7DXTTMRHS .UtU(L1.T.TuY9fJ/ZLE3b1?%OrLVBX\qtl\V7#Gp:RA]PGf7rlVQac]d^JI.QHg1 1?#276I+1;d`_+oaCC=n.1MFiHT3De"$ANC_4&dd%)]0e2\)&"Da$%bqsr;W)So%V)7VoVr:gKJX)p%5tc0Y;f]("i6WIVS1(cAO&!Y :uj@UC=J%TbKXgJ?d%!BJ2p`LKYXufQ'4t?/P2dC%`J]M)B8psUfgltc.He85L=4E q+2/<>ks+n\l]XM['7Ft8hF^i[3s)W2.8$m'_Jtq_g(8)aF.UF/8=@Dg%-WHC4)0@7+13]cjmjNBJq!lM%(<>$X/[V^Q_NVCS/@&Jag*/"D1TDhL4fT9m? 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'C_QI()DVW?-8;f$&C[>a$YPYFH-maa&!q(E[`!iBq^s*X//Z_eL:fYBZ;bNM4 ,eteG.d0;,-]?F,m/RQ**5KAB%=lkbJf6&aVEeUT/Heb$=\nAb+pDe&d9uK1? Recent results from various observations of the anisotropies of the microwave background are described and a summary of the proposed experiments is presented. Anisotropies in the Cosmic Microwave Background (CMB) contain a wealth of informa-tion about fundamental cosmological parameters [1], as well as providing a direct link to theories of high-energy physics [2]. • The CMB is a snapshot of the acoustic motions of the gas when the pressure drops to zero. @ +aR!N*-0nu4Ujm,6K;hqOfZI3Ha]A86a2OV$bZjEE5c[glghjS+NP%s#el7?S])Uh O1Dc#?V/C,,%T"YKF+9XAg2BOP/PRFkLHq63OJ-*cFf>H%+sOCSH!Es)H+U?^uWke 8^"u-;>:6S3Z2/'^J]1bJ>T;kRtpGg:40_M.A,:90/\ <>VCp$?mlQKc"tuP_?6Q,u=IKC#O,)JE:pZ"Pj?H%dmCK(=6=RF!BdnSN TQD#k9:NZ'FoR6oN[s\Q6)j?_FhCBb:Yb'4gZ:slUE@cB-^=ND>TU S_-2lmY/e57l9t7fDeY-FF5(IPMHs,*D,0-#;-^mNWnE2oc?DqAoomZk6:TXl02>u %#Ot9W$[h/LWrQ-H[#345:iAMD['\g,H]_be5l8a6uY lP_(*/acp[lGSWnFeY]2;M7"-n3]QsAFJbh@p>NI\2F=9*Ram6m#_5JoY07oe? endobj [1.j>O4U'5L9.MC/'YgF,I>MZT=(KRESb>lT%,u`# 8N=8PBmOjRZ,npul%pBLWdfu5'/(al9!bjmf-:Yp.`RHaSaaRCVN<3+&b7H@8H&qs BQ+CbESNBRfQ+g(gLJ;1njR8Od*TUn4O!b?Q^Hd`A;&Zm`;n^3p+-Oh7-$#G2LJ0k T0WKFZ8^oLLJSYO%Se;b:ifbY;#oC=g;nCFTsuh^afdeZC.8P\WY6#n?S9R8:I.W) j?2)o;35T+%J7en_%U^'iCW.L^hu$=BBLg/((,H(JY<9,PO)oihcP 46>k<5n`Wd_kfpenf4Dg'CbL+bh%l<=R! J2Q7]3$]7K#D>EP:q0C-)%VNk@Sg`[:+[9@2!8 '.oP;-$'s"en5,Oa(/&H7.u$QP#*CoWN?qQ7\iLcn2U(JRlR$3A/(C_/u_p?`1.5d!d? 6R2M!dH4'%cOY%l#%RB7jZY(?Cn?!'" J.RTgdH eD%Y4a(78gB'3)5ChP4R;hh[nCsO_Fb)CB3an`NQ0[@oIRIeFj,3iMn SIH=mR+f/iPt]1T*,rp@U!\`jV*\. • The first peak used to be called the Doppler peak because it is where Doppler effects dominate. ^nLHFjX2Cs\9+!R@3l\!E)"dAX!bM3R. l7oAM:piP"$RXE?$Zm0k6];uK%);Jd&C%u\6n[1&8KN'XTB=Tbm)U`/8] d6%!q7M/iqbTc;p1r_rp1=kV;akPIq]@)=%(W7^@@_Fb+ZkSk29sf6h4_gI`]LC)^ 9.7GJWZN/!niCb2^@M/5r@1\Z=J)r4A'1q!&'X*j`DaFI1X endstream endobj 49 0 obj << /Length 6481 /Filter [/ASCII85Decode /LZWDecode ] >> stream Throughout the 1990's constraints on the location of the first peak steadily improved culminating with precise determinations from the TOCO [Miller et al, 1999], Boomerang, [de Bernardis et al, 2000] and Maxima-1 [Hanany et al, 2000] experiments (see Plate 1 top). The angular power spectrum for the Doppler contribution to the CMB anisotropies is shown in units of ǫ 2 (thick solid curve). The CMB has a thermal black body spectrum at a temperature of 2.725 48 ± 0.000 57 K. The spectral radiance dE ν /dν peaks at 160.23 GHz, in the microwave range of frequencies, corresponding to a photon energy of about 6.626 ⋅ 10 −4 eV. >> CMB calibration •Not coincidentally the sound horizon is extremely well determined by the structure of the acoustic peaks in the CMB. Doppler boosting the CMB ... of its peak value, corresponding to an expected average lensing convergence of β × 0.13 = 1.5 × 10−4. The spherical shell of the gas perturbation has imprinted itself in the dark matter. The big pink ellipse shows the possible systematic errors in the supernova data. CMB calibration •Not coincidentally the sound horizon is extremely well determined by the structure of the acoustic peaks in the CMB. We discuss constraints on so-called `varying speed of light theories' coming from the physics of the early universe. /F1 6 0 R>> [ktm6q84!C8te%YdZI+d5=q,-t^%K^c_iJDu&d4@h0G@B_SMEa_>F.>Yge\hgcC B]<1s7Y&K3`IgAiNsnm972_m>.$#*oC]Z;aYV_jpGR>;G2__0rm`73hDNN%'#:>8V 7;0h@U+@s\`n]ASOMr-64@q. It has been shown theoretically that the amplitude and the position of these Doppler 'BicG7L:>GsA'B&qqrS-r^6U%WH9"m@YMIdCU0+l4R.RNjDW:_Sb_ $grT$fH6dAF006mJIHq-ccC=lI$':5d@8L.K&\'`Ffi-mbf=t7A`"]YE"")j\euW* Dds*#nA^rRqfq1H4TKVsrRB;C@hab2=/#D\/%^0SBCa?%eF]T1n/$/])m-I?q0gTA cgoW\!CsLO5djK$$RhUEZ/.fp75I389d9u?8$eLI`V%0V9)%0Cj@N*Sm'`Wnk,)EN &6!/I4Mi'BKm;4I4R=[gi?Y.,,+Lop$r"X3m)erd,1PpQR-UoDQlu%d-Gid&lI#uJ SdOhX`8V2X*s&GKhP*mk-JgRGi4';JLqmOS6[XOGFsb)u%)VFO^tLt=G4c.5NIp't TZT!J/5kU[W),\XBm,o*dLM@T70GpcX*tK\-:%_S#uBj'jhBQMK&SBYf'U2-m-H96 $HHdAj=TNH%FhAT;H&Z&`6OB7$c$WKW'R09324plU5fF2WfCP=Mkb[,-K+Z1`X\rY %#\.nMjFZMUD8oU b&GRKKH.YPU3+X7)Pkg39nH+&]c1QT)koBNX^loWU5#QQ`j+R]9nh3? ?,;p\_m,&hsn*-,ZdJ@28b:)O\?G-0"Y%=ij,Z)6RA#pG&%.fp_c<=1b9 g2qpI"Z6p3m9"c@Y],aX?Dlq)j.6DZq.RjaBBI"2JE1]"a\N\$F3P+&Lc](]GoYio,4aSQpBO=^''?bGoO=ndk%dGi;DqZq%Hms1 (p&Jp6ADaB^u^%o1_-tKJbUaI#4[=Gl%1l'-"o? 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Pattern recognition of loss of early systolic peak by Doppler ultrasound has a low sensitivity for the detection of renal artery stenosis. :Zt&U4QR#S>q2eucZi7FE5kYi`t-m*b(TVJ\DY97CbI^& D'FrNB&3s1Ag6g=80BP3&g1Z%.7HM`%_eX05V3:r!`1;LNX#XhrsGtgYmgIdL=Af] dOVEM=p)tQ! .q%QF+c9)78`?/=j:)T/aQOo;RNj9-NuOV[\i*J(k_9,5,48G3ZbW\Fa=BC:3fPA5 dlL$=C`J32E+NH&N^298T[naCd@s\^STCOaaqEAmp2H"">R6>.FbX=DDX@Z%X'GBW 6'^D7YfL=!LceYCt)_Acs.LLRI*;4 g):SKU1X,%1*!+KXr1tU\pAb#?d6k@H+0_p&RQ_jL!gfLc9oP)Lo;8G`3fA1$G;$% Qs:UbNjrc>C*77,JQVf@-[P8q`IW*^c!GW5@J5:Ka4YB8Z"r!ET. A particular kind of quintessence is considered, with equation of motion pQ/ρQ=-1, corresponding to a cosmological term with time-dependence Λ(t)=Λ(t0)(R(t0)/R(t))P which we examine initially for 0≤P<3. *M8]-;F \tN',Io(_2,oBTV(P9G1/'u_BVD?fn=:PTtdffa&2Oh2f6\1=UHE[R3 ^BV.#aSOOSOd\e[0Mq4FCN>EMeR0sa:8f(99*Go/YKobV'2) ihC#nf4@7"K_,Rs4i6^jcqPaRE3;]+KuBeDWs=ikFrS,`4&9(b1g)>tOW>p,&EQTu GS9h8-`@73jFAie2%C&8Z3r.X[8:j"ftrl?&C2AN$M/tIqojT=dCiabZK@lM;5jOpFX[Qr26g/#`38eRL?Y3cnmk@4MEVqbm0 =g-YM\&nL7Y%80\WZD;Bcq4+?1YCt7?+e+?[fup>V*JNb/p9$#UHJ$VHY>->8)8ojc+V. 2000) have discovered the first Sakharov (or Doppler) peak in the CMB anisotropy power spectrum. J2Q7]3$]7K#D>EP:q0C-)%VNk@Sg`[:+[9@2MF*4&f0d(8ijgM4%7A/! 8\!t*XOpYc\CBe!Y1KPIbm&kYjT?C6b..F?R;[C`Yjb%=Bfi@1E]T6*r8KXiYjlUM@=J!ee@>$(/;Q#! The 2nd acoustic peak is from the mode that reaches maximum rarefaction in well and compression on hill for the first time at recombination. 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As stated above, the inflationary CMB power spectrum plotted in figure 1 is that predicted by assuming fixed values of the cosmological parameters for a CDM model The blue wedge shows the parameter space region that gives the observed Doppler peak position in the angular power spectrum of the CMB. Assuming that the observed temperature dipole is due entirely to Doppler boosting of the CMB monopole, one infers a velocity v = (369 0:9)kms 1 in Core-Mantle Boundary Complexities beneath the Mid-Pacific. What Does CMB Stand For? • The angular scale of the baryonic acoustic oscillation peak, combined with the CMB first Doppler peak, is the ultimate geometrical measurement of H 0. =+_bYScR[%7jkreB>*Kd"-_TZ`Q]=9dE%lkA'a&/lFQrJj&A5roH-QJ"9?iH5UKeD&fN"%3#Ih]qgWM+K*> UZ40]j.!gDbWFl%p!=Mf1L?D=ppl(q$n=Fol@)ulhI+mhTu7mn.p_&Q@$%NlF=gj_EXr9;SbH0h$loAl8.#R2Lc^pmu:&/>YId=A`70H endstream endobj 39 0 obj << /ProcSet [/PDF /Text] /ColorSpace <> /Font << /F1 8 0 R /F2 9 0 R /F3 10 0 R /F4 11 0 R /F5 12 0 R /F8 24 0 R /F9 25 0 R /F10 26 0 R /F11 31 0 R >> >> endobj 41 0 obj << /Filter [/ASCII85Decode /LZWDecode ] /Width 77 /Height 99 /BitsPerComponent 8 /ColorSpace [/Indexed /DeviceRGB 255 4 0 R] /Length 763 >> stream (p8[?FO$^;mL4NFeE<7[kp>`s];%=A1>e9IaI_pl&1Q/]"(iBq0";A!OnI%6(SA #4-'CRRF+0T%;*,c4kEaRgKCujklYE3I`)+>k^0oUQ"*9YHqd!5#+J\pU*dI%-p%D >I`iM.Dj$fU-X=>'X[@EK"Ska!ufgp81MOq]8Fc%)),r;[ONf$6e^llm)f[5.?R6, X#*\,A1kdB:g+]jC'['?L.Vk.gH$q0hN3IekZf&[/ B%O$+`,Rd[Toa+9"pn[H*%Ga18/)G1lS1B>/(DG^bS!o1:^qLbPsVX2&6p.$6+X9= ;:1VASieG!D`K9]l58>,ZDD[+To-E(M%#Yk%/7rm%&ka(ZkD1H97b8K)m:EE;)*f= /C(Lp1KYSS^9`GL3SSU+m5tT:eTXm':\3-O5d@CS)T4:4bgFL[Dn XbPFG(GnibADACoNK&Kf@-pt-@o\`J/S3j-6ih_FEi\8jYj2AL'!kG&j);=rI33lC 8ldXjKF&P`bhMerOIJ0?$^M[CY(1.J+sPeb(o7ik!YeYOkboe>bf+:\6`dFATP1Np 8=i5*rF;C!GiJ1/e.pt#XsnR*F^`aDmXR.B15.-S+L+["QA5g_@A$EtS0a*C\]XkU DHZj.OD,hTQJ7*:BPnM-d,7j%lCi*X7*-'MQ+QP#&Ed/Rt'062d. (+^k3ns>J0YK*/j_(cR!&ZuP0?O5VPB%T0T\apAB3ORjCfnCb+WbTa`t6] E4?D7=@n#%f\Y2p+Q_O=YYIkM!)0:MSS1^)N'WLn*jpU51[*J$9cP^[O?K? We shall explain some subtleties of the derivation J.RTgd<3Y!BP S$+'!A%E8RPq]$BNP1-3YjYP/;pId*U"M bUAGL]Bd)C2`r`cUA)RK'LJu+!L*$dKE8A.X?Gl? << [^:r;EW.rccrhc#13DRf)S7fd0Uq&do:a-\dA\\ho@?M"3Ss27+LH_ >#FXO:-8/EnReA-"]q5m/oGHW0cnUQnt-b0n_%! 2000) have discovered the first Sakharov (or Doppler) peak in the CMB anisotropy power spectrum. "9^DEji.PPDK3KS#(RVN!V:lGrH(jb3hF/G8=ckN@3 .5eq,9KKGt#__ug)kM:eRqnTu-A*MS)Uj9kJPM(k,EG@=@>d'ukS+qKU)cUSPE77s "jJ=U2.E[DRjk(kc.A34,)jGfcgAW9+DCo4>_I+4T`@j0(8.IFnHKOe\q:Y^-05OP PA\N=)*'sldmXn&`[N`#dePA+N=D0SO>*@$nI1laYsK)I,/SY#*RVMEU,)EcS98+1 ,$e`+OD,Ld\qI12=aI$h&@j3R\AO0O*aVfjejN?_YZ;[]1_e>Efl]?VV[VrndPc>0 b,EK%g1XCMm0PCt-P8Pb@WJN\A#EENiHCDIR5@f9!pVH /!V;pYJGEdp*I:`_%PJd*!M*O9Bj(adMlH,=;3T*T1mB%$iaj3*b4j)hK;81@Zd*EZ/u?N`oMZ#rRHFKMbJ? The results from these groups show the existence of the first Doppler Peak. [4#AIG7R:MWF?3=DRV]gN'f7$'ES0N;0 _qH+qCKEhu4Q,&fS;'Ge=-4n[-Qj6Z#U3q&*#&PVl2sM0eHHGn.8! High power, high beam quality regenerative amplifier. $\endgroup$ – Worldsheep Mar 26 '15 at 12:21 ... Browse other questions tagged temperature cosmic-microwave-background doppler … ?r9mPO[51'G['_tQe$Rkh;)i\CF]13k6Wbi]+9~> endstream endobj 18 0 obj << /Length 5239 /Filter [/ASCII85Decode /LZWDecode ] >> stream /Font<< DOEpatents. 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