\n<\/strong>Bulgudan sonra, bir\u00e7ok Yer konu\u015flu teleskop taraf\u0131ndan ayr\u0131nt\u0131l\u0131 g\u00f6zlemleri yap\u0131ld\u0131 ve NASA\u2019n\u0131n Hubble Uzay Teleskopu Oumuamua\u2019n\u0131n y\u00fczeyinden yans\u0131yan G\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131n\u0131 alg\u0131lad\u0131. Oumuamua\u2019n\u0131n y\u00fczey parlakl\u0131\u011f\u0131ndaki b\u00fcy\u00fck de\u011fi\u015fiklikler, g\u00f6kcisminin en uzun k\u0131sm\u0131n\u0131n yakla\u015f\u0131k 800 metre oldu\u011funa i\u015faret ediyor.<\/p>\n
Spitzer Uzay Teleskopu, g\u00f6kcisimlerinin sald\u0131\u011f\u0131 k\u0131z\u0131l\u00f6te enerjiyi veya \u0131s\u0131y\u0131 izler; cisimden yans\u0131yan G\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131n\u0131n k\u0131z\u0131l\u00f6te dalgaboylar\u0131, cismin boyutuna ili\u015fkin bilgiyi, yans\u0131yan g\u00f6rsel b\u00f6lge \u0131\u015f\u0131\u011f\u0131ndan daha net verir.<\/p>\n
Oumuamua Spitzer Uzay Teleskopu i\u00e7in \u00e7ok s\u00f6n\u00fck bir g\u00f6kcismi oldu\u011fundan, toplam y\u00fczey alan\u0131 i\u00e7in bir s\u0131n\u0131r belirlenemedi.<\/p>\n
K\u00fc\u00e7\u00fck ancak yans\u0131t\u0131c\u0131 Kuyrukluy\u0131ld\u0131z\u0131n albedo<\/strong>\u2019su ya\u015fam s\u00fcresi boyunca de\u011fi\u015fir. G\u00fcne\u015f\u2019e yak\u0131n ge\u00e7en kuyrukluy\u0131ld\u0131z\u0131n buzu \u0131s\u0131n\u0131r ve hemen gaza d\u00f6n\u00fc\u015f\u00fcr, y\u00fczeyden s\u00fcp\u00fcr\u00fclen gaz ve toz kuyrukluy\u0131ld\u0131z\u0131n y\u00fczeyinde daha yans\u0131t\u0131c\u0131 olan buzun a\u00e7\u0131\u011fa \u00e7\u0131kmas\u0131n\u0131 sa\u011flar.<\/p>\n Oumuamua milyonlarca y\u0131ld\u0131r y\u0131ld\u0131zlararas\u0131 ortamda yolculuk yapt\u0131\u011f\u0131 i\u00e7in y\u00fczeyini gaz ve tozdan temizleyecek olan y\u0131ld\u0131zdan uzaktad\u0131r. Ancak, bizim G\u00fcne\u015f\u2019imize son derece yak\u0131n ge\u00e7ti\u011fi ve G\u00fcne\u015f taraf\u0131ndan \u201cgazdan ar\u0131nd\u0131r\u0131ld\u0131\u011f\u0131\u201d i\u00e7in y\u00fczeyi temizlenmi\u015f olabilir. Oumuamua, ke\u015ffedilmeden be\u015f hafta \u00f6nce G\u00fcne\u015f\u2019e en yak\u0131n konumdayd\u0131. Gaz ve tozun y\u00fczeyden ar\u0131nd\u0131r\u0131lmas\u0131n\u0131n yan\u0131 s\u0131ra, sal\u0131nan gaz, t\u0131pk\u0131 G\u00fcne\u015f sistemindeki kuyrukluy\u0131ld\u0131zlarda oldu\u011fu gibi, Oumuamua\u2019n\u0131n y\u00fczeyini yans\u0131t\u0131c\u0131 buz ve karla kaplam\u0131\u015f olabilir.<\/p>\n Oumuamua G\u00fcne\u015f sisteminden \u00e7\u0131k\u0131yor -G\u00fcne\u015f\u2019ten hemen hemen Sat\u00fcrn gezegeninin y\u00f6r\u00fcngesi denli uzakta- ve g\u00fcn\u00fcm\u00fcz teleskoplar\u0131n\u0131n eri\u015febilece\u011fi uzakl\u0131\u011f\u0131n \u00f6tesinde.<\/p>\n Kaynak: <\/strong>https:\/\/www.jpl.nasa.gov\/news\/news.php?feature=7280 (14 Kas\u0131m 2018)<\/p>\n Oumuamua nedir? Bir asteroid veya kuyrukluy\u0131ld\u0131z m\u0131? Ba\u015fka d\u00fcnyalardan g\u00f6nderilmi\u015f teknoloji \u00fcr\u00fcn\u00fc bir ara\u00e7 olabilir mi?<\/p>\n SETI (Search for ExtraTerrestrial Intelligence \/ Yer \u00d6tesi Zeki Canl\u0131lar\u0131n Ara\u015ft\u0131r\u0131lmas\u0131) Enstit\u00fcs\u00fc biliminsanlar\u0131, Allen Teleskop Dizisini (ATA) kullanarak, 170 milyon mil \u00f6tedeki Oumuamua\u2019y\u0131 g\u00f6zleyip bu sorunun yan\u0131t\u0131n\u0131 bulmaya \u00e7al\u0131\u015ft\u0131lar. G\u00f6zlemin amac\u0131, e\u011fer varsa, cisimden gelebilecek yapay radyo dalgalar\u0131n\u0131 \u00f6l\u00e7mek, cismin ba\u011fl\u0131 oldu\u011fu y\u0131ld\u0131z sisteminden \u00e7ekimsel kuvvetin itkisiyle f\u0131rlat\u0131lan basit bir kaya par\u00e7as\u0131 olmad\u0131\u011f\u0131na ili\u015fkin g\u00fc\u00e7l\u00fc bir kan\u0131t bulmak olarak sunuldu.<\/p>\n Acta Astronautica<\/em> dergisinin \u015eubat 2019 say\u0131s\u0131nda yay\u0131nlanacak olan makalenin ba\u015fyazar\u0131 Gerry Harp, \u201cBiz, bu cismin belli bir teknoloji \u00fcr\u00fcn\u00fc oldu\u011funu, kayna\u011f\u0131n\u0131n yapay oldu\u011funu kan\u0131tlayacak bir sinyal ar\u0131yorduk. \u00c7ok duyarl\u0131 ara\u015ft\u0131rmam\u0131za kar\u015f\u0131n bekledi\u011fimiz yapay bir sinyal yoktu. G\u00f6zlemlerimiz, Oumuamua\u2019n\u0131n do\u011fal olmayan kayna\u011f\u0131na ili\u015fkin kesin bir sonu\u00e7 vermemesine kar\u015f\u0131n, veriler, cismin yap\u0131s\u0131n\u0131 de\u011ferlendirme a\u00e7\u0131s\u0131ndan \u00f6nemli\u201d dedi.<\/p>\n 2017 y\u0131l\u0131 Ekim ay\u0131nda ke\u015ffedilmesinden sonra Oumuamua, Arthur C. Clark\u2019\u0131n Randezvous with Rama<\/em> adl\u0131 roman\u0131nda s\u00f6z\u00fc edilen y\u0131ld\u0131zlararas\u0131 uzay gemisini an\u0131msatt\u0131\u011f\u0131 i\u00e7in, do\u011fal olmayan kayna\u011f\u0131na ili\u015fkin olas\u0131l\u0131\u011f\u0131n canland\u0131rd\u0131\u011f\u0131 pop\u00fcler spek\u00fclasyon konusu oldu. Oumuauma olduk\u00e7a uzun oldu\u011fundan ve kuyrukluy\u0131ld\u0131zlar\u0131n ba\u015f\u0131ndaki \u0131\u015f\u0131kl\u0131 k\u00fcreye benzer bir yap\u0131 sergilemedi\u011finden, asteroidler ve kuyrukluy\u0131ld\u0131zlar da Oumuamua\u2019n\u0131n \u00f6zelliklerine sahip olmad\u0131\u011f\u0131ndan, do\u011fal olmayan kayna\u011fa ili\u015fkin hipotez g\u00fc\u00e7 kazand\u0131.<\/p>\n Harvard\u2019daki ara\u015ft\u0131rmac\u0131lar\u0131n Astrophysical Journal Letters<\/em> dergisinde yay\u0131mlanan makalesi de Oumuamua\u2019n\u0131n belli bir amaca y\u00f6nelik yap\u0131ya sahip olma olas\u0131l\u0131\u011f\u0131n\u0131 ileri s\u00fcrd\u00fc. Harvard ara\u015ft\u0131rmac\u0131lar\u0131, Oumuamua\u2019da g\u00f6zlenen az ancak beklenmedik bir ivmelenmenin, G\u00fcne\u015f \u00e7evresinde dolan\u0131rken G\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131 taraf\u0131ndan \u00fcretilen bas\u0131n\u00e7tan kaynakland\u0131\u011f\u0131n\u0131 ileri s\u00fcrd\u00fcler. Ara\u015ft\u0131rmac\u0131lar\u0131n hipotezine g\u00f6re cisim, bizim bulundu\u011fumuz konuma kas\u0131tl\u0131 olarak veya kazayla g\u00f6nderilmi\u015f, \u0131\u015f\u0131kla seyahat eden bir cisim. Kas\u0131tl\u0131 g\u00f6nderilme olas\u0131l\u0131\u011f\u0131n\u0131n daha y\u00fcksek oldu\u011fu, \u00e7\u00fcnk\u00fc bizim G\u00fcne\u015f sistemimizin ama\u00e7s\u0131z bir cisim i\u00e7in olduk\u00e7a k\u00fc\u00e7\u00fck bir hedef oldu\u011fu belirtiliyor.<\/p>\n Bu t\u00fcr savlar, Oumuamua\u2019n\u0131n ger\u00e7ek do\u011fas\u0131na ili\u015fkin s\u0131n\u0131rlar \u00e7izece\u011finden, ATA g\u00f6zlemevinde yap\u0131lan g\u00f6zlemlerin \u00f6nemini g\u00fc\u00e7lendiriyor.<\/p>\n G\u00f6zlemler 23 Kas\u0131m – 5 Aral\u0131k 2017 tarihleri aras\u0131nda ATA teleskopunun geni\u015f band a\u011f\u0131nda, 1-10 GHz frekanslar\u0131nda ve 100 kHz \u00e7\u00f6z\u00fcn\u00fcrl\u00fckle yap\u0131ld\u0131. Cismin \u00fczerinden t\u00fcm y\u00f6nlere sinyal \u00fcretecek 10 wat veya daha y\u00fcksek g\u00fcce sahip bir verici ile g\u00f6nderildi\u011fi d\u00fc\u015f\u00fcn\u00fclen sinyal alg\u0131lanmad\u0131.<\/p>\n Oumuamua\u2019dan sinyal alg\u0131lanmay\u0131nca SETI Enstit\u00fcs\u00fc biliminsanlar\u0131n\u0131n g\u00f6zlem raporu, gelecekte y\u0131ld\u0131zlararas\u0131 ortamdan gelecek olan, hatta bizim G\u00fcne\u015f sistemimizdeki k\u00fc\u00e7\u00fck ve iyi bilinen cisimlerin niteli\u011fini belirleme konusunda yararl\u0131 olaca\u011f\u0131na i\u015faret ediyor. G\u00fcne\u015f sistemimizdeki k\u00fc\u00e7\u00fck ve iyi bilinen cisimlerin, y\u0131ld\u0131zlararas\u0131 ortamdaki ara\u015ft\u0131rma ayg\u0131tlar\u0131 oldu\u011funa ili\u015fkin hipotez, radyo g\u00f6zlemleriyle bu d\u00fc\u015fsel ancak imk\u00e2ns\u0131z olmayan fikri s\u0131nama olana\u011f\u0131 tan\u0131yor.<\/p>\n Kaynak: <\/strong>https:\/\/www.seti.org\/press-release\/radio-search-artificial-emissions-oumuamua (4 Aral\u0131k 2018)<\/p>\n","protected":false},"excerpt":{"rendered":" 2017 y\u0131l\u0131 Ekim ay\u0131nda NASA\u2019n\u0131n Spitzer Uzay Teleskopu, Oumuamua olarak bilinen ve G\u00fcne\u015f sistemini y\u0131ld\u0131zlararas\u0131 ortamdan ziyaret eden ilk cisme y\u00f6nlendirilmi\u015fti. K\u0131z\u0131l\u00f6te dalgaboylar\u0131nda g\u00f6zlem yapan Spitzer, Ekim ay\u0131nda ke\u015ffedilmesinden sonra Oumuamua\u2019y\u0131 g\u00f6zleyen bir\u00e7ok teleskoptan birisi. Oumuamua ilk kez Hawaii \u00dcniversitesi\u2019nin Haleakala y\u00f6resinde konu\u015flu teleskobu Pan-STARRS 1 taraf\u0131ndan, Yer\u2019e yak\u0131n asteroidleri ara\u015ft\u0131r\u0131rken 2017 y\u0131l\u0131 Ekim ay\u0131nda […]<\/p>\n","protected":false},"author":475,"featured_media":31571,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[3618,297,792,628,4382,4381],"class_list":["post-31570","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-asteroid","tag-gunes-sistemi","tag-kuyrukluyildiz","tag-nasa","tag-oumuamua","tag-seti"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t
\n<\/strong>Yeni yap\u0131lan bir \u00e7al\u0131\u015fma Oumuamua\u2019n\u0131n G\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131n\u0131 yans\u0131tma g\u00fcc\u00fcn\u00fcn G\u00fcne\u015f sisteminde bulunan kuyruklu y\u0131ld\u0131zlar\u0131n yans\u0131tma g\u00fcc\u00fcnden 10 kat daha y\u00fcksek oldu\u011funa i\u015faret ediyor. \u00c7al\u0131\u015fmay\u0131 yapan yazarlara g\u00f6re bu \u015fa\u015f\u0131rt\u0131c\u0131 ve beklenmedik bir durum. \u00c7\u00fcnk\u00fc k\u0131z\u0131l\u00f6te \u0131\u015f\u0131k, \u201c\u0131s\u0131s\u0131 y\u00fcksek\u201d g\u00f6kcisimlerinin \u00fcretti\u011fi \u0131s\u0131dan kaynaklan\u0131r, kuyruklu y\u0131ld\u0131z veya asteroidin s\u0131cakl\u0131\u011f\u0131n\u0131n belirlenmesinde kullan\u0131l\u0131r. Daha sonra bu bilgi, cismin y\u00fczeyinin yans\u0131tma g\u00fcc\u00fcn\u00fcn belirlenmesinde kullan\u0131l\u0131r; biliminsanlar\u0131 buna albedo<\/strong> der. Koyu renk ti\u015f\u00f6rt g\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131nda a\u00e7\u0131k renk ti\u015f\u00f6rtten daha \u00e7abuk \u0131s\u0131n\u0131r, yans\u0131tma g\u00fcc\u00fc d\u00fc\u015f\u00fck olan bir cismin \u0131s\u0131y\u0131 hapsetmesi, y\u00fcksek yans\u0131tma g\u00fcc\u00fcne sahip olan cisimden daha etkilidir. K\u0131sacas\u0131, d\u00fc\u015f\u00fck s\u0131cakl\u0131k y\u00fcksek albedo<\/strong> anlam\u0131na gelir.<\/p>\nOumuamua, teknoloji \u00fcr\u00fcn\u00fc olabilir mi?<\/strong><\/h5>\n
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