[PDF] Supplementary Discussion for ET Might Write Not Radiate





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ET PROBES: LOOKING HERE AS WELL AS THERE

of asteroids or moons they might well have been detected ET may actually prefer to send information physically via probes. 2. WHY SEND PROBES?



ET PROBES NODES

https://arxiv.org/pdf/1808.07024



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IMPACTS OF TECHNOLOGY USE ON CHILDREN: EXPLORING

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OUMUAMUA AND SCOUT ET PROBES

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Supplementary Discussion for ET Might Write Not Radiate

Consider the scenario of FIGURE A. The energy used to send an electromagnetic message is PT where P is the radiated power. A receiver at some distance D 

Radiate

ChristopherRose1;andGregoryWright2

1

RutgersUniversity

Piscataway,NewJersey08854USA

2

AntiopeAssociates

18ClayStreet

FairHaven,NewJersey07704USA

G max=8p2R2 l2=2p2A2;(1)

WenotethatAG

4pD21byenergyconservation.

tweenthetransmitterandreceiveris

C=Wlog2PAG

4pD2N0W+1

;(2) 1 t=D/c+TT radiated message D/c Time 0

Mass TransportRadiation

mass delivered toobtain E rBN04pD2

AGln2:(3)

E r8ln2 p2BN0DA 2 :(4) 2

InscribedMatterMessagesCanBeDense

“existenceproof."

approximately

˜rvoyager=1:1106bitskg1.

maximumconstructionenergyis2000eV. 3 lowerthantheper-atomupperbound. stellardelivery.

EscapefromGravitationalWells

theplatformtobeavewitha>1.Wethenrequire1

2ma2v2

etoacceleratethemassappropriatelyin e+ 12mv2 e.Wethenhavetheratio

Epotential

Enopotential=1+1=a2;(5)

Fora=2,thepenaltyis1:25.

RadiatedMessagesMustBeRepeated

repeatedlyemergeanddecline. 4 t1t2t3t 1t 2t 3t N t

NSL. . .

SingleTransientCivilizations

1Fd=Nå

k=1Z tk t k1f S(s)Z tks

0fL(`)d`ds=Nå

k=1Z tk t k1f

S(s)FL(tks)ds;(6)

variablepairs(S;L)lieintheshadedregions. maximumuncertaintyaboutSandL. F d=l

μlNå

k=1eltk

1e(μl)(tktk1)

:(7) 5

Takingpartialswithrespecttotkyields

d :(8) μe (μl)Dk(μl)eμDk+1=l:(9) x k+1=μ

μlx1l

kl

μl;(10)

determinewhichisthecase,wesolve x=μ

μlx1l

μlμl;(11)

rewriteitas x 1l

μ(1lμ)x=lμ;(12)

andnotethatx1l ofxkwemusthave0xk1andtheextremumofx1l

μ(1lμ)xoccursatx=1.Sowemust

have x k+1xk;(13) tothevariationinfS(s)andFL(`).Wethenhave

1FdNå

k=1D

2(fS(tk1)FL(D)+fS(tk)FL(0))12FL(D);(14)

assumingsufcientlylargeN. 6 l m 01 emerginglistening D=1

μlog(12Ff);(15)

F

N=μ

llog(Ff=10)log(12Ff):(16)

SequentialTransientCivilizations

1 land1μrespectively. as F f=1Fd=NÕ k=1Prob(X(tk)=0jX(tk1=0));(17) C. 7

1Fd=NÕ

k=1 l+μ+ll+μe(l+μ)Dk :(18) asabound F d1μ l+μ N :(19)

N.Thus,wewouldhave

(1Fd)=μ l+μ+ll+μe(l+μ)G N N (20) constitutesasuccess.

SpeculationonLongMessages

tions,andweofferourspeculations. [14]. 8 oflikelyhabitats.

References

September1959.

Nature,190(4772):205-208,April1961.

tion.Int.J.Mod.PhysC,1:355-422,1990.

Nature,344:524-526,1990.

1996.

1462,September1997.

1975.
9quotesdbs_dbs47.pdfusesText_47
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