solar system<\/a>: the planets orbit around the Sun in a plane, which roughly coincides with the equatorial plane of the Sun. The inclination of the Sun rotation axis with respect to orbital axis of the Earth is only seven degrees.<\/p>\nJuri Poutanen, Professor of Astronomy at the University of Turku and the lead author of the study, explained: “The expectation of alignment, to a large degree, does not hold for the bizarre objects such as black hole X-ray binaries. The black holes in these systems were formed as a result of a cosmic cataclysm \u2013 the collapse of a massive star.<\/p>\n
\u201cNow we see the black hole dragging matter from the nearby, lighter companion star orbiting around it. We see bright optical and X-ray radiation as the last sigh of the infalling material, and also radio emission from the relativistic jets expelled from the system.\u201d<\/p>\n
How did scientists make this discovery?<\/h3>\n
By following these jets, researchers were able to determine the direction of the axis of rotation within the black hole very accurately. As the amount of gas falling from the companion star to the black hole later began to decrease, the system dimmed, and much of the light in the system came from the companion star.<\/p>\n
Thus, scientists were able to measure the orbit inclination by employing spectroscopic techniques, and it happened to nearly coincide with the inclination of the ejections.<\/p>\n
\u201cTo determine the 3D orientation of the orbit, one additionally needs to know the position angle of the system on the sky, meaning how the system is turned with respect to the direction to the North on the sky. This was measured using polarimetric techniques,\u201d commented Poutanen.<\/p>\n
The results\u00a0open interesting prospects towards studies of black hole formation and evolution of such systems, as such extreme misalignment is hard to determine in many black hole formation and binary evolution scenarios.<\/p>\n
\u201cThe difference of more than 40 degrees between the orbital axis and the black hole spin was completely unexpected. Scientists have often assumed this difference to be very small when they have modelled the behaviour of matter in a curved time space around a black hole. The current models are already really complex, and now the new findings force us to add a new dimension to them,\u201d Poutanen concluded.<\/p>\n","protected":false},"excerpt":{"rendered":"
A research team from the University of Turku, Finland, has discovered that the axis of rotation challenges current theoretical models of black hole formation. What does this axis of rotation mean for black hole formation? Scientists have discovered that the axis of rotation of a black hole in a binary system is tilted more than […]<\/p>\n","protected":false},"author":21,"featured_media":19051,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[771],"tags":[818,801,3478,821,3477],"acf":[],"yoast_head":"\n
Scientists observe novel black hole formation<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n\n\n\n\n\n\t\n\t\n\t\n