A research team from the University of Oklahoma is announcing the discovery of extragalactic planet-mass objects in a second and third galaxy ahead of our galaxy after the first discovery in 2018.
With the present observational sources, it is challenging to identify planet-mass objects ahead of the Milky Way immediately and to estimate its rogue planetary group. Researchers of the team include Xinyu Dai, associate professor in the Homer L. Dodge Department of Physics and Astronomy, Eduardo Guerras, former postdoctoral researcher, and Saloni Bhatiani, PH.D. student.
Dai explained: “The detection of planet-mass objects, either free-floating planets or primordial black holes, are extremely valuable for modeling of star/planet formation or early universe.” He then added: “Even without decomposing the two populations, our limit on the primordial black hole population is already a few orders of magnitude below previous limits in this mass range.”
Scientists Identified Planet-Mass Objects in Extragalactic Systems
Moreover, the research team has discovered a new procedure that utilizes quasar microlensing. Such a technique will probe the planet population within far away extragalactic systems. They have been capable of compelling the section of these planet-mass objects concerning the galactic halo by analyzing their microlensing signs in the spectrum of the lensed photos of far bright Active Galactic Nuclei.
The team assumed these unchained objects to be either free-floating planets or primordial black holes. For example, free-floating planets were removed or divided during stellar/planetary creation. Primordial black holes, on the other hand, appeared in the first phase of the universe due to quantum variation.
The results indicate that planet-mass objects are for sure universal in galaxies. Also, the first-ever restrictions at the planet-mass vary within the intracluster area of a galaxy cluster are shown there. Bhatiani stated: “We are very excited about the detections in two news systems. We can consistently extract signals from planet mass objects in distant galaxies. This opens a new window in astrophysics.”