{"id":18452,"date":"2015-08-06T07:37:10","date_gmt":"2015-08-05T23:37:10","guid":{"rendered":"https:\/\/www.curtin.edu.au\/news\/media-release\/super-star-takes-on-black-holes-in-jet-contest\/"},"modified":"2015-08-06T07:37:10","modified_gmt":"2015-08-05T23:37:10","slug":"super-star-takes-on-black-holes-in-jet-contest","status":"publish","type":"media-release","link":"https:\/\/www.curtin.edu.au\/news\/media-release\/super-star-takes-on-black-holes-in-jet-contest\/","title":{"rendered":"Super Star takes on Black Holes in Jet Contest"},"content":{"rendered":"

Media Release from ICRAR, International Centre for Radio Astronomy Research<\/em><\/p>\n

A super-dense star formed in the aftermath of a supernova explosion is shooting out powerful jets of material into space, research suggests.<\/p>\n

In a study published this week\u00a0a team of scientists in the Australia and the Netherlands discovered powerful jets blasting out of a double star system known as PSR J1023+0038.<\/p>\n

It was previously thought that the only objects in the Universe capable of forming such powerful jets were black holes.<\/p>\n

PSR J1023+0038 contains an extremely dense type of star astronomers call a neutron star, in a close orbit with another, more normal star nearby.<\/p>\n

It was first identified as a neutron star in 2009 but it was only when the research team observed the star with the Very Large Array radio telescope in the United States in 2013 and 2014 that they realised the star was producing much stronger jets than expected.<\/p>\n

Astronomer James Miller-Jones, from the International Centre for Radio Astronomy Research (ICRAR), says neutron stars can be thought of as stellar corpses.<\/p>\n

\u201cThey\u2019re formed when a massive star runs out of fuel and undergoes a supernova, and the central parts of the star collapse under their own gravity,\u201d he says.<\/p>\n

\u201cThese things are typically about one and a half times the mass of the Sun and yet they\u2019re only 10-15km across, so they\u2019re incredibly dense.\u201d<\/p>\n

ASTRON astronomer Adam Deller, who led the research, says neutron stars and black holes are sometimes found in orbit with a nearby \u201ccompanion\u201d star.<\/p>\n

\u201cGas can then flow from the companion star to the neutron star or black hole, producing spectacular displays when some of the material is blasted out in powerful jets at close to the speed of light,\u201d he says.<\/p>\n

\u201cFrom what we had seen previously, black holes were previously considered the undisputed kings of forming powerful jets, even when they were only fed by a little bit of material from their companion star.\u201d<\/p>\n

\u201cIn comparison, neutron stars seemed to make relatively puny jet, which only became bright enough to see when the neutron star was gobbling gas from their companion at a very high rate.\u201d<\/p>\n

Dr Deller says when the team looked at PSR J1023+0038 it was only consuming a trickle of material and should have been producing a very feeble jet.<\/p>\n

\u201cBut our observations suggest its jets are nearly as strong as you\u2019d expect from a black hole,\u201d he says.<\/p>\n

Dr Miller-Jones says PSR J1023+0038 is a \u201ctransitional\u201d neutron star, spending years at a time powered mainly by the rotation of the neutron star but transitioning occasionally into an active gathering state, when it gets much brighter.<\/p>\n

\u201cTwo other transitional systems are now known and both of these have also been shown to exhibit powerful jets,\u201d he says.<\/p>\n

\u201cThis is casting neutron stars in a new light and showing that in fact they can sometimes launch jets to rival those coming from black holes.\u201d<\/p>\n

The research was published in the Astrophysical Journal.<\/p>\n

\u00a0ICRAR is\u00a0a joint venture between Curtin University and The University of Western Australia with support and funding from the State Government of Western Australia.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

A super-dense star formed in the aftermath of a supernova explosion is shooting out powerful jets of material into space, research suggests.<\/p>\n","protected":false},"author":4275,"featured_media":10209,"template":"","meta":{"_acf_changed":false,"_oasis_is_in_workflow":0,"_oasis_original":0,"_oasis_task_priority":"","_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","wds_primary_category":0,"wds_primary_research-areas":0,"footnotes":""},"categories":[3,4],"tags":[],"research-areas":[],"class_list":["post-18452","media-release","type-media-release","status-publish","has-post-thumbnail","hentry","category-campus-and-global-community","category-research"],"acf":{"post_options":{"":null,"additional_content":{"title":"","content":"","image":false},"related_courses":false,"credits":{"author":"","photographer":"","media":false},"display_author":true,"banner":{"image":false}}},"featured_image":"https:\/\/www.curtin.edu.au\/news\/wp-content\/uploads\/2022\/07\/Neutron-Star2-1000x500.jpg","author_meta":{"first_name":"Curtin","last_name":"University","display_name":"Curtin University"},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/media-release\/18452","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/media-release"}],"about":[{"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/types\/media-release"}],"author":[{"embeddable":true,"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/users\/4275"}],"version-history":[{"count":0,"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/media-release\/18452\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/media\/10209"}],"wp:attachment":[{"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/media?parent=18452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/categories?post=18452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/tags?post=18452"},{"taxonomy":"research-areas","embeddable":true,"href":"https:\/\/www.curtin.edu.au\/news\/wp-json\/wp\/v2\/research-areas?post=18452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}