???(cosmology) - PowerPoint PPT Presentation

Loading...

PPT – ???(cosmology) PowerPoint presentation | free to download - id: 6bfa38-YjE1N



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

???(cosmology)

Description:

Title: --- , , Author: SEC Last modified by: admin Created Date: 12/5/2006 12:56:29 AM – PowerPoint PPT presentation

Number of Views:38
Avg rating:3.0/5.0
Slides: 49
Provided by: SEC117
Learn more at: http://myung.inje.ac.kr
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: ???(cosmology)


1
??? ??? ?? ??? 137??? ??? ??
  • ???? ??(2014.3.24.)
  • ????? ??????????
  • ? ??

2
???(cosmology)
  • ??????
  • ??? ??, ??, ??? ???
  • ??? ???????? ??? ? ??(??)??
  • ????? ? ? ???
  • 1) ??????? ???
  • 2) ??? ????? ???(Big Bang)??
  • 3) 1998? ????????
  • ???? ????
  • 1)??? 2) ??? 3) ??? ??
  • ?????
  • ???(Big Bang)???(inflation)

3
2006? ?? ???? ?????
  • ?????? ? ??-???
  • ????? ????? ???
  • ????? ???? ??(COBE)?
  • ???? ??? ???? ??? ??(2.7K)? ??? ??? ???
    ??? ??.
  • ??? ???(? ?? WCU??) ?? ?? ???? 10??? 1??
    ??? ??? ??? ???? ????.

4
COBE vs WMAP(NASA)
5
Planck Satellite (ESA)
6
??-38? ?? ???? ? ?? (???,?????)
COBE(1992)
WMAP(2004)
7
??? ?????? ????
8
Cosmic microwave background seen by Planck
(2013.3.21,ESA) ?Planck reveals an almost perfect
Universe
9
??? ??? ???????
  • ???(Big Bang)??
  • ??? (????? ? ?????)
  • ?? ???? ??? ?? ?.
  • 1940?? ???? ???? ???.
  • ??? ??? ??? ?.

10
???? ?? ? ??? ??, ??
??? ????
  • ?

????? ??? ???? ? ? ? ? ? ??? ???????
? 3? 45? ??
11
??????? ????
?? ?? ?????????
  • 1.1929? ??? ??????(????)
  • ???? ???????? X ??????
  • 2. 1965? Wilson-Penzias? ????? ??
  • ???? ???????? 2.7K??
  • ? ??? 7cm? ???????
  • 3. ?? ?????? ????? ???
  • ???? 3? ? ?? ? ?? ?? 31
  • 4. COBE-????? ?? 2.7K ? ??????
  • 5. WMAP-????? ?? ???? ? ??? ??

12
?????(1? ??)
13
??-???? ?????? ?? ??
????????? ???
14
???? ????? ??? ????
15
COBE-????? ?? ???????? 2.7K??(1?? 4? ??)
  • ???? ? 380,000?? ??? ??? 3,000 K?? ??? ? ??
    ?????, ??? ???(??? ???? ?). ??? ???
  • ???? ??? ??? ??? ????(???? ????)???, ????? ??
    ????? ?? ?????? ?? ? ??? 2.7K ?.

2.7K
16
?? ???? ??? ?? ?40??(100???) ??? ??(?? ??? ??)
  • ?? ?? ?? ??? ??? ?? ?? ??? ??? ???? ???? ?? ??
    ???? ??? ???? ?? ??? ?? ??? ??.
  • ?? ??? ?? ??? ? ? (?? ?)? ??? ?? ??? ???? ?
    ???

17
?? ???? ??? ?? ??? ?? ?(Nature 469,504,2011)
The tiny, dim object observed by Hubble could be
a compact galaxy of blue stars that is seen as it
was only 480 million years after the Big Bang.
The rate of star formation was about 200 million
years later.
Ultra-deep-field exposure taken with NASAs
Hubble Space Telescope
18
(No Transcript)
19
Big-Bang??? ?????
  • ?????
  • ????? ?????
  • ? ??? ?????
  • ?????
  • ???? ???? ?? ? ??? ??? ?????, ????? ?? ???
    ???? ????
  • 10? ? ???? ?? ??? ??? ? ?? ??? ?? ??? ??.

20
Big Bang??? ???? ??????
  • ???(?????)? ??
  • Guth (?????)
  • ?Old inflation(X)
  • Linde, Albrecht Steinhardt
  • ? New inflation (slow-roll
    inflation)

21
?????(inflation)
22
?????
23
???????
24
??? ????
  • ??? ??? ?? ?? ?? ?? ???
  • ????? ????? ?? ?? ? ?? ???? ?? ?? ??? ? ?? ??? ?
    ? ?? ????.
  • ? ???, ??? ?? ?? ?? ?? ???? ??? ???? ???? ??? ?
    ??.

25
?????? ???? ????
  • ???COBE WMAP?? ???? ?? ??
  • 1)??????? ?? ??? ??
  • ????? ? ??(??)???? ??? ???
  • ?? ????????(Large Scale Structure) ???
  • 2)??????(CMBR)? ?? ?????
  • 1/100,000??? ???? ???????????? ???? ???.
  • ???????(LSS)??? ?? ??
  • 3) SDSS? 2dF??? ?? ???? ?? ?? ??? ? ?????
  • ?????????(power spectum???? ????)? ????
  • ??

26
??? ?? ????? ????(??? ??) (2014? 3?18?)
.
?? ??? ?????? ??????? 17?(????) ? 138?? ? ??? ??
??? ?? ??? ?? ?? ?????? ??? ??? ??? ????? ???.  
??? ?????? ????????? ?? ?????? ??? ???? ????.
???? ??? ?? ??? ?? ??? ? ? ?????, ??? ?? ??? ???
?? ????? ???? ?? ??? ???. ???, ???? ??? ??????
???????? ?? ???? ????? ????? ?? ??? ??? ??
???.
????? ??? ??? ???2(BICEP2)?? ?? ??? ?? ??? ???
?? ??????? ?? ??? ??? ??? ???? ??? ????.
????? ?? ?? ??? ??? ???? ???? ??? ????, ? ??? ??
?? ??? ?? ??? ?? ??. ?? ??? ? ????? ???? ???? ???
?? ????? ???? ???? ??? ??? ???? ??????? ????? ?
???? ???? ??? ???? ???? ????.   ???? ?? ??? ??
?? ?? ??? ??? ?? ??? ??? ?? ? ?? ??? ?? ??.
27
BICEP and B-mode of primordial gravitational
waves
The BICEP (Background Imaging of Cosmic
Extragalactic Polarization) telescope at the
South Pole, designed to measure polarized light
from the early Universe.
Primordial gravitational waves give the
divergence-free B component in the CMB
polarization.
28
(No Transcript)
29
WMAP? ?? ???????? (2? ??)
30
??? ????(Large Scale Structure LSS)
  • 1.2dF?? ??? (galaxies)? ??
  • (Two Degree Field Galaxy Redshift Survey,
    2001?)
  • 2. 250,000 ???? ??(????, ???? ? 1Gpc? ???)
  • 3. ????(????? ??)? ? ??? ??? 3????? 2?? ???? ???

31
????
32
?????? (38???137???? ????? ?100,000??? )
33
????? ?? ?? ??? ?? ??? ??? ?????
  • ??
  • ????????(?????)
  • ????0 ??
  • ??? ??? ??(slowing expansion)
  • (Reheating??????????????)
  • ????0 ??(??????)
  • ??? ??? ??(accelerating expansion)
  • ??? ???? ??(??? ??)?
  • ?wlt-1(????)?? ??? ?? ?? ?
  • Big Rip(??? ??)?

34
????? ??????
  • ?????
  • (??????)
  • ????
  • (?????)
  • ????????
  • (?? ? ????)

35
????? ????? ????
  • 1933? ??? ???? ?? ?????? ?? ?? ???? ?? ??? ??
  • ????? ?????
  • ??????? 90? ??? ???
  • ??????? ??? ?????
  • ? ??? ???? ?? ????
  • ????? ??? ??? ???
  • (?? 5-10? ? ??)

36
???? M33? ????
  • Solid line total rotation curve
  • Dot-dashed line dark matter
  • Short-dashed line stellar disk
  • Long-dashed line gas
  • At large radii, dark matter
  • dominates.

37
??????? ???????
38
??????
????? ?? 4?? ??? ?? ?? ?? ???? ?? ?? ???? ????
??? ?? ????? ???? 4?? ???? ???.
39
(No Transcript)
40
?????? ????? ????
  • 1) Ia ? ???(????)?? ?? ??? ???? ??? ??? ??? ????
    ??? ??? ??? ??? ? ??.
  • 2) ?? ?? ???? 1998? ? ????? ??? ???? ???? ? ??,
    ??? ?? ??? ?? ???? ??? ??? ????.
  • 3) ?? ??? ???? ??? ???? ?? ???? ??? ?? ???.
  • 4) 2010? ????? ????? 557? ???????? ????? 99
    ???.
  •  

41
2011?? ????
? ???, ???? ??, ?? ??
??????? ??? ? 3? ?? ???? ?? ?? ??? ??? 100???
??? ??? 50? ?? ?? (???? ?? ???? ??? ?? ??? '??
??) ????? ??? ??? ???? ????? ?? ????? ??? ??(?)
42
???? ??
43
????-??? ??
???????
??? ????
44
??-???? ?
45
????? ????
  • 1) ?? ??? ???? ??? ?? ??? ???? ?? ??? ?? ??? ??
    ?.
  • 2) 60?50?? ??? ??? ??? ???? ??
  • ??? ???? ?? ???? ??? ??
  • 3) ?? ???? 90?? ??? ???? ?? ??
  • (2006? 11? 16? NASA, ?? ?????)
  • ??? ????? ?? 24? ??? ??. 
  • ????? ?? ?? ??? ??? ????
  • ?(?)??? ?? ???? ???. 

46
????? ??? ?????
  • ????????
  • ??,??, ??
  • ????? ????
  • ??, ??, ??, ????(????)
  • ???? ???? (????? )
  • ????? (stiff matter w1), ?? (radiation w1/3),
  • (??)?? (cold dark matter w0)
  • ?? (curvature w-1/3)
  • ??????? (dark energy -1/3ltwlt-1)
  • ???? (cosmological constant w-1)
  • ???? (phantom wlt-1)

47
????? ?????
  • ?????? ??????? ???
  • ??? ?? ?? ( )
  • ?? ?????? ?? ??? ??
  • ??? ??? ???? ???? ??.
  • ? ?? ?? ? ?? ???? ??? ???? ??? ???
  • ??? ????? ???
  • ??? ??????
  • (fine-tuning problem??? ?? ???
    ? ??)
  • ???? f(R) gravity, Massive gravity ??
  • ??? ???? ???? ??.

48
??????? ????? ??? ????
  • - ???? ????.
  • --??? ??? ???? ??.
  • ??? ?? ?? ??? ??
  • ???? ??? ????.

lt??? ?? ???gt
About PowerShow.com