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Kara Deliklerin Çarpışması Evrenin Sırrını Açığa Çıkarabilir - HAKANSEYHAN
Evrenin en büyük gizemlerinden kabul edilen kara delikler, uzun seneler süresince gizemini koruyacak benzer biçimde görünüyor. Sadece Chicago Üniversitesi’nden iki astrofizikçinin yapmış olduğu bir çalışmaya bakılırsa çarpışan kara delikler yardımıyla evrenin nasıl geliştiğini, neyden oluştuğunu anlayabileceğiz.
Evrene, gök cisimlerine ve hatta kara deliklerin nasıl oluştuğuna dair yüzlerce kuram var. Bu alanda günlerce, aylarca hatta senelerce emek harcamalar yapılsa bile elde edilmiş veriler o denli ufak kalıyor ki bir sonuca varmak pek mümkün olmuyor. Sadece kara delikler ve evren hakkında malum en net şey bunların gerçek olduğudur.
Kara delikler çoğu zaman bilginin kaybolduğu derin karanlıklar olarak adlandırılır. Sadece yeni meydana getirilen bir emek harcama sonucunda bilim adamları, bizlere evrenin tarihini anlatmak için kara deliklerin son anlarını kullanarak geliştirilen bir yöntem bulmuş olabilirler. Gelin Einstein’ın yer çekimi teorisine dayanan bu emek harcama neymiş ve evrenin sırrını nasıl açığa çıkarabilir yakından bakalım.
“Spektral siren” tekniği evrenin gençlik yıllarını ortaya çıkarabilir
Chicago Üniversitesi’nden iki astrofizikçi, yeni bir çalışmada, Hubble sabiti olarak adlandırılan bir sayıyı kısaca evrenimizin ne kadar süratli şekilde genişlediğini ölçmek için çarpışan karadelik çiftlerinin nasıl kullanılacağına dair bir yöntem keşfetti. Bu yöntem, evrenin nasıl geliştiğini, neyden yapıldığını ve nereye gittiğini anlamamıza destek olabilir.
Bilim adamlarının “spektral siren ” adını verdikleri yeni bir yöntemle evrenin keşfedilmesi zorluk derecesi yüksek gençlik yılları hakkında ayrıntılarının ortaya çıkarılabileceği düşünülüyor. Hubble sabitinin doğruluğunu keşfetmek oldukça mühim şu sebeple bu sayı yardımıyla evrenin yaşı, zamanı ve yapısı keşfedilebilir.
Hubble sabiti hususi dedektörler kullanılarak hesaplanıyor
Meydana getirilen yeni emek harcama, kara delik çarpışmalarının kozmik yankılarını yakalayan hususi dedektörler kullanılarak Hubble sabitinin hesaplanabilmesinin yeni bir yolunun bulunduğunu gösteriyor ve bu sayede evrenin öteki yöntemlerle incelenmesi zorluk derecesi yüksek gençlik yılları rahatça incelenebilir.
Bilim adamları çarpışma sonucunda ortaya çıkan sinyalin nasıl değiştiğini ölçebilirlerse evrenin gençlik yıllarının yanı sıra genişleme hızını da hesaplayabileceklerini iddia ediyorlar. Mesela, mevcut kanıtlar, tespit edilen kara deliklerin çoğunun güneşimizin hacminin beş ila 40 katı içinde bulunduğunu gösteriyor.
NASA Einstein Doktora Sonrası Araştırma Görevlisi ve Kavli Kozmolojik Fizik Enstitüsü Araştırmacısı Ezquiaga, “Yani yakındaki kara deliklerin kütlelerini ölçüp özelliklerini anlıyoruz ve sonrasında daha uzağa bakıp bu kara deliklerin ne kadar değiştiğini görüyoruz ve bu size evrenin genişlemesinin bir ölçüsünü veriyor ” dedi.
İLGİLİ HABER
Etken Olmayan Bir Kara Delik Ortaya çıkarıldı: Tamam da ‘İnaktif Kara Delik’ Nasıl Oluyor? Araştırmacılar heyecanlı şu sebeple ileriki zamanlarda kullanılan araçların kabiliyetleri arttıkça yöntem, evrenin öteki yöntemlerle çalışılması zorluk derecesi yüksek “genç” yıllarına kısaca ortalama 10 milyar yıl önceye benzersiz bir pencere açabilir.
Kaynak :
https://scitechdaily.com/spectral-siren-black-hole-collisions-could-help-measure-how-fast-the-universe-is-expanding/
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