Archeops
Archeops bụ ngwá ọrụ balloon a raara nye ịtụle Cosmic microwave background (CMB) okpomọkụ anisotropies. Nnyocha nke radieshon a dị mkpa iji nweta ozi ziri ezi banyere evolushọn nke Eluigwe na Ala: njupụta, Hubble constant, afọ nke eluigwe na ala, wdg. Iji mezuo ebumnuche a, a na-eji ngwaọrụ ndị jụrụ oyi na 100mK okpomọkụ etinye na anya nke onyokomita na-ekpo ọkụ. Iji zere nsogbu ikuku, a na-etinye ngwaọrụ ahụ dum na gondola n'okpuru balloon helium nke ruru kilomita 40 n'ịdị elu.
Archeops nwere bands anọ na mpaghara millimeter (143, 217, 353 na 545 GHz) na mkpebi dị elu (ihe dị ka 15 arcminutes) iji gbochie obere anisotropy scales, yana nnukwu igwe mkpuchi (30%) iji belata ọdịiche dị na mbara igwe.
Ngwá ọrụ na ụgbọ elu[dezie | dezie ebe o si]
[1] mepụtara ngwá ọrụ ahụ site n'ịgbanwe echiche ndị e wepụtara maka High Frequency Instrument of Planck surveyor (Planck-HFI) na iji mgbochi balloon.Ya bụ, ọ mejupụtara oghere 3He-4He dilution cryostat jụrụ spiderweb-ụdị bolometers na 100 mK; Igwe anya igwe oyi nke onye ọ bụla nwere mpi n'ụdị ọnọdụ okpomọkụ dị iche iche (0.1, 1.6, 10 K) na teliskop Gregorian na-apụ apụ.
A na-atụle mgbaàmà CMB site na ihe nchọpụta 143 na 217 GHz ebe a na-enyocha ikuku na-esi na 353 (polarized) na 545 GHz. A na-agbagwoju ngwá ọrụ ahụ dum anya iji zere radieshon sitere n'ụwa na balloon.
Iji kpuchie ihe ruru pasent iri atọ nke mbara igwe, ibu ahụ na-agbagharị n'elu ikuku, na-enyocha mbara igwe na okirikiri na ịdị elu nke ihe dịka ogo 41. Gondola, nke dị n'elu 32 kilomita, na-agbagharị n'eluigwe na ọnụego nke 2 rpm nke, jikọtara ya na ntụgharị ụwa, na-emepụta mbara igwe nke ọma na frequency ọ bụla.
Archeops fepụrụ na nke mbụ na Trapani (Sicily) na oge ntinye awa anọ. Mgbe ahụ, ewepụtara ngwa ahụ kwalitere ugboro atọ site na Esrange base dị nso na Kiruna (Sweden) site na CNES n'oge oge oyi 2 consecutive (2001 na 2002). Ụgbọ elu ikpeazụ na nke kacha mma na Febụwarị 7, 2002 na-ewepụta awa 12.5 nke ụdị data CMB (n'elu elu ụlọ na n'abalị) site na ngụkọta awa 19. Balloon ahụ rutere na Saịberịa ma nwetaghachi ya (ya na data dị oke ọnụ ahịa e dekọrọ n'ime ụgbọ) site n'aka ndị otu Franco-Russian nwere ihu igwe -40ºC.
Nsonaazụ[dezie | dezie ebe o si]
[2][3] ejikọtala, maka oge mbụ na tupu WMAP, nnukwu oghere oghere (nke COBE tụrụ na mbụ) na mpaghara mbụ nke ụda olu.
Site na nsonaazụ ya, a na-eme ka cosmologies na-akpali inflation sie ike na mbara igwe dị larịị (ngụkọta ike Ωtot = 1 n'ime 3%).Mgbe ejikọtara [4] na Site na datasets cosmological agbakwunyere gbasara uru Hubble na-adịgide adịgide, Archeops na-enye ihe mgbochi na njupụta ike gbara ọchịchịrị na njupụta baryonic na nkwekọrịta dị mma na atụmatụ ndị ọzọ nwere onwe ha dabere na nha supernovae na nnukwu nucleosynthesis.
[5] enyewo map polarized mbụ nke ụyọkọ kpakpando [6] mkpebi a.
Edensibia[dezie | dezie ebe o si]
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Wikimedia Commons nwe ru media dị ikwu nye Archeops. |
- ↑ Benoît (2002). "Archeops: A High Resolution, Large Sky Coverage Balloon Experiment for Mapping CMB Anisotropies". Astroparticle Physics 17 (2): 101–124. DOI:10.1016/S0927-6505(01)00141-4.
- ↑ Tristram (2005). "The CMB temperature power spectrum from an improved analysis of the Archeops data". Astronomy and Astrophysics 436 (3): 785. DOI:10.1051/0004-6361:20042416.
- ↑ Benoît (2003). "The Cosmic Microwave Background Anisotropy Power Spectrum measured by Archeops". Astronomy and Astrophysics 399 (3): L19. DOI:10.1051/0004-6361:20021850.
- ↑ Benoît (2003). "Cosmological constraints from Archeops". Astronomy and Astrophysics 399 (3): L25. DOI:10.1051/0004-6361:20021722.
- ↑ Ponthieu (2005). "Temperature and polarization angular power spectra of Galactic dust radiation at 353 GHz as measured by Archeops". Astronomy and Astrophysics 444 (1): 327. DOI:10.1051/0004-6361:20052715.
- ↑ Benoît (2004). "First Detection of Polarization of the Submillimetre Diffuse Galactic Dust Emission by Archeops". Astronomy and Astrophysics 424: 571. DOI:10.1051/0004-6361:20040042.