Ugo (polarimeter)
Spider bụ nnwale nke balloon emebere ka ọ chọọ ebili mmiri ndọda mbụ nke etinyere na mbara igwe igwe igwe (CMB). Ịtụ ike nke mgbama a na-etinye oke na tiori onu oriri
Ngwá ọrụ Spider nwere telivishọn isii nwere ogo isii nK a na-eme ka ọ dị jụụ na okpomọkụ Helium (4 K) nke na-ahụ na frequency nke 100 GHz, 150 GHz, na 280 GHz (nke kwekọrọ na wavelengths nke 3 mm, 2 mm, na 1.1 mm). A na-ejikọta onyokomita ọ bụla na bolometer (TES) nke na-emetụta polarisation nke na-eme ka ọ jụọ oyi ruo 300 mK. Spider bụ ngwá ọrụ mbụ iji gosipụta ihe nchọpụta TES nke oge na-agbanwe agbanwe na gburugburu ebe obibi. [1]'oge ụgbọ elu mbụ n'elu Antarctica na 2015, Spider bụ ngwá ọrụ microwave kachasị dị nro eme.
Ihe mgbaru ọsọ sayensị bụ isi gụnyere:
- njirimara nke akụkụ na-enweghị curl nke CMB polarization na nnukwu ihe ọ̀tụ̀tụ̀
- ịchọ akara nke inflationary gravitational waves na polarization CMB
- njirimara nke polarization njirimara nke ikuku sitere na Milky Way Galaxy anyị
Ụgbọ elu balloon mbụ nke nnwale a malitere na Jenụwarị 2015 site na McMurdo Station, Antarctica, na nkwado sitere na NASA's Columbia Scientific Balloon Facility. Ụgbọ elu Balloon Ogologo Ogologo a were ihe dị ka ụbọchị iri na asaa, na-esepụta ihe dị ka 10% nke mbara igwe. Ihe data sitere na ụgbọ elu a weputara onyonyo nrịbama-na-mkpọtụ nke ike na akara polarization nke Cosmic Microwave Background, na ọkwa mkpọtụ 3--5 ugboro dị ala karịa ụgbọ elu Planck dị n'otu mpaghara nke mbara igwe, na-ebute oke nha. nke CMB na ụzarị mbara ihu Galactic, yana oke siri ike na oke tensor-to-scalar cosmological. Ụgbọ elu ndị ọzọ akwadoro maka oge na-aga n'ihu na-eme ka nkwalite na mgbanwe dị na teliskop modular, mkpuchi ugboro ugboro na omimi.
Edensibia
[dezie | dezie ebe o si]- ↑ Shaw (2020). "Design and pre-flight performance of SPIDER 280 GHZ receivers", in Zmuidzinas: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X. DOI:10.1117/12.2562941. ISBN 9781510636934.