{"id":1514,"date":"2021-06-29T21:00:16","date_gmt":"2021-06-29T12:00:16","guid":{"rendered":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/?p=1514"},"modified":"2021-06-29T21:01:47","modified_gmt":"2021-06-29T12:01:47","slug":"advanced-ligo-and-advanced-virgo-observed-gravitational-waves-from-neutron-star-black-hole-binaries","status":"publish","type":"post","link":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/archives\/1514","title":{"rendered":"LIGO and Virgo observed gravitational waves from neutron star-black hole binaries"},"content":{"rendered":"<p>(from <a href=\"https:\/\/www.ligo.org\/science\/Publication-NSBHDiscovery\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.ligo.org\/science\/Publication-NSBHDiscovery\/<\/a>)<\/p>\n<p>On January 5th 2020, the Advanced LIGO detector in Livingston, Louisiana in the US and the Advanced Virgo detector in Italy observed gravitational waves produced by the last few decaying orbits (inspiral), followed by the merger of the neutron star with the black hole. Just ten days later a second gravitational-wave signal from the inspiral and merger of a neutron star with a black hole, was observed, this time by both Advanced LIGO detectors (in Livingston and also in Hanford, Washington) and the Virgo detector. This is the first time gravitational waves have been observed from a mix of neutron stars and black holes. These new discoveries are nick-named GW200105 and GW200115.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1515\" src=\"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-content\/uploads\/2021\/06\/Masses_of_Dead_Stars_LIGO_Virgo_GW200105_GW200115.png\" alt=\"\" width=\"450\" height=\"310\" srcset=\"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-content\/uploads\/2021\/06\/Masses_of_Dead_Stars_LIGO_Virgo_GW200105_GW200115.png 822w, https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-content\/uploads\/2021\/06\/Masses_of_Dead_Stars_LIGO_Virgo_GW200105_GW200115-300x207.png 300w, https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-content\/uploads\/2021\/06\/Masses_of_Dead_Stars_LIGO_Virgo_GW200105_GW200115-768x530.png 768w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><br \/>\nThe masses of neutron stars and black holes measured through<br \/>\ngravitational waves and electromagnetic observations.<br \/>\n(Image credit: LIGO-Virgo &amp; Frank Elavsky, Aaron Geller, Northwestern University)<br \/>\n(See <a href=\"https:\/\/www.ligo.org\/science\/Publication-NSBHDiscovery\/\">the science summary<\/a> for details.)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1516\" src=\"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-content\/uploads\/2021\/06\/GW200105_GW200115_Fig4_with_GW190426.png\" alt=\"\" width=\"380\" height=\"363\" srcset=\"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-content\/uploads\/2021\/06\/GW200105_GW200115_Fig4_with_GW190426.png 659w, https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-content\/uploads\/2021\/06\/GW200105_GW200115_Fig4_with_GW190426-300x287.png 300w\" sizes=\"auto, (max-width: 380px) 100vw, 380px\" \/><br \/>\nSummary of our knowledge of the component masses of the objects<br \/>\nthat produced GW200105 and GW200115.<br \/>\n(See <a href=\"https:\/\/www.ligo.org\/science\/Publication-NSBHDiscovery\/\">the science summary<\/a> for details.)<\/p>\n<p>See <a href=\"https:\/\/www.ligo.org\/science\/Publication-NSBHDiscovery\/\">the science summary\u00a0 &#8220;A NEW SOURCE OF GRAVITATIONAL WAVES: NEUTRON STAR\u2013BLACK HOLE BINARIES&#8221;<\/a> for details.<\/p>\n<p>Read <a href=\"https:\/\/dcc.ligo.org\/P2000357\/public\">a free preprint<\/a> of the full scientific article here.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>(from https:\/\/www.ligo.org\/science\/Publication-NSBHDiscovery\/) On January 5th 2020, the Advanced LIGO detector [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,5],"tags":[],"class_list":["post-1514","post","type-post","status-publish","format-standard","hentry","category-news","category-latestnews"],"_links":{"self":[{"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/1514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/comments?post=1514"}],"version-history":[{"count":11,"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/1514\/revisions"}],"predecessor-version":[{"id":1528,"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/1514\/revisions\/1528"}],"wp:attachment":[{"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/media?parent=1514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/categories?post=1514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gwcenter.icrr.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/tags?post=1514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}