{"id":7362,"date":"2021-07-02T14:09:45","date_gmt":"2021-07-02T06:09:45","guid":{"rendered":"https:\/\/www.cag.ntnu.edu.tw\/?p=7362"},"modified":"2021-10-11T23:31:07","modified_gmt":"2021-10-11T15:31:07","slug":"hypu3","status":"publish","type":"post","link":"https:\/\/www.cag.ntnu.edu.tw\/index.php\/2021\/07\/02\/hypu3\/","title":{"rendered":"\u9ed1\u6d1e: \u5927\u8207\u5c0f"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"7362\" class=\"elementor elementor-7362\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3460de33 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3460de33\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-49f873a2\" data-id=\"49f873a2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-14554387 elementor-drop-cap-yes elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"14554387\" data-element_type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">\u5728\u4e0a\u7bc7\u6587\u7ae0&#8221;\u91cd\u529b\u6bd4\u4e00\u6bd4&#8221;\u7684\u8a0e\u8ad6\uff0c\u6211\u5011\u63d0\u5230<\/span><span style=\"font-weight: 400;\">\u4fdd\u6301\u8cea\u91cfM\u4e0d\u8b8a\u4f46\u5c07\u661f\u9ad4\u534a\u5f91r\u6f38\u6f38\u7e2e\u5c0f\u6642\uff0c\u5ee3\u7fa9\u76f8\u5c0d\u8ad6\u63cf\u8ff0\u7684\u6642\u7a7a\u5f4e\u66f2\u6548\u61c9\u5c07\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002<\/span><span style=\"font-weight: 400;\">\u5b9a\u91cf\u4e0a\uff0c\u7a76\u7adf\u661f\u9ad4\u8981\u591a\u7dfb\u5bc6\uff0c\u5ee3\u7fa9\u76f8\u5c0d\u8ad6\u7684\u6548\u61c9\u5c07\u9010\u6f38\u91cd\u8981\u5462?<\/span><\/p><p><span style=\"font-weight: 400;\">\u7b54\u6848\u5c31\u662f\u5c07\u661f\u9ad4\u534a\u5f91r\u548c\u4e00\u500b\u7279\u5fb5\u534a\u5f91\u76f8\u6bd4\u8f03:<\/span><b>\u53f2\u74e6\u8332\u534a\u5f91<\/b><span style=\"font-weight: 400;\">(Schwarzschild radius)\u3002\u53f2\u74e6\u8332\u534a\u5f91R<sub>sch<\/sub><\/span><span style=\"font-weight: 400;\">\u7684\u5927\u5c0f\u53ea\u548c\u661f\u9ad4\u7684\u8cea\u91cfM\u6709\u95dc:R<sub>sch<\/sub><\/span>=2GM\/c<span style=\"font-weight: 400;\"><sup>2<\/sup><\/span><span style=\"font-weight: 400;\">\uff0c\u5176\u4e2dG\u70ba\u91cd\u529b\u5e38\u6578\uff0cc\u70ba\u5149\u901f\u3002\u7576M\u662f\u4e00\u500b\u592a\u967d\u8cea\u91cf\u6642\uff0cR<sub>sch<\/sub><\/span><span style=\"font-weight: 400;\">=3\u516c\u91cc\u3002\u82e5\u5c07\u592a\u967d\u7684\u534a\u5f91(\u7d04\u70ba\u4e03\u5341\u842c\u516c\u91cc)\u8207\u5176\u53f2\u74e6\u8332\u534a\u5f91\u76f8\u6bd4\uff0c\u5247\u5927\u4e86\u7d0410<sup>5<\/sup>\u6578\u91cf\u7d1a (r ~10<sup>5<\/sup><\/span><span style=\"font-weight: 400;\">R<sub>sch<\/sub>)\u3002\u50cf\u4e2d\u5b50\u661f\u9019\u6a23\u7684\u7dfb\u5bc6\u5929\u9ad4(compact object)\uff0c\u5247\u8207\u5176\u53f2\u74e6\u8332\u534a\u5f91\u76f8\u6bd4\u53ea\u5927\u4e86\u7d043\u500d(r &gt;~3R<sub>sch<\/sub><\/span><span style=\"font-weight: 400;\">)\u3002\u6709\u8da3\u7684\u662f\uff0c\u5ee3\u7fa9\u76f8\u5c0d\u8ad6\u7684\u4fee\u6b63\u5728\u5730\u7403\u4e0a\u7684\u5f31\u91cd\u529b\u5834\u4ecd\u7136\u662f\u53ef\u6e2c\u91cf\u5230\u7684\u3002\u5118\u7ba1\u5730\u7403\u7684\u534a\u5f91\u8207\u5176\u53f2\u74e6\u8332\u534a\u5f91\u76f8\u6bd4\uff0c\u7d04\u5927\u4e8610<sup>8<\/sup><\/span><span style=\"font-weight: 400;\">\u6578\u91cf\u7d1a\uff0c\u4f46\u5728<\/span><span style=\"font-weight: 400;\">\u7528\u65bc\u5c0e\u822a\u7684\u5168\u7403\u5b9a\u4f4d\u7cfb\u7d71(<\/span><span style=\"font-weight: 400;\">GPS)\u7684\u61c9\u7528\u4e0a\uff0c\u5ee3\u7fa9\u76f8\u5c0d\u8ad6\u6548\u61c9\u9020\u6210\u7684\u8aa4\u5dee\u4ecd\u820a\u9700\u8981\u88ab\u8003\u616e\u4ee5\u9054\u5230\u6e96\u78ba\u5730\u4f4d\u7684\u8981\u6c42!<\/span><\/p><p><span style=\"font-weight: 400;\">\u53f2\u74e6\u8332\u534a\u5f91\u9084\u626e\u6f14\u53e6\u70ba\u4e00\u500b\u89d2\u8272\uff0c\u90a3\u5c31\u662f\u975c\u6b62\u9ed1\u6d1e\u7684<\/span><b>\u4e8b\u4ef6\u8996\u754c<\/b><span style=\"font-weight: 400;\">(event horizon)\u7684\u534a\u5f91\u5927\u5c0f\u3002\u5728\u9ed1\u6d1e\u5f62\u6210\u7684\u904e\u7a0b\u4e2d\uff0c\u6240\u6709\u8cea\u91cf\u90fd\u9010\u6f38\u584c\u7e2e\u5230\u4e00\u500b\u9ede\uff0c\u4e26\u5176\u5468\u570d\u5f62\u6210\u4e8b\u4ef6\u8996\u754c\u7684\u5947\u602a\u6642\u7a7a\u7d50\u69cb\u3002\u6211\u5011\u901a\u5e38\u628a\u4e8b\u4ef6\u8996\u754c\u7a31\u70ba\u9ed1\u6d1e\u7684\u5927\u5c0f(r<\/span><span style=\"font-weight: 400;\"><sub>BH<\/sub><\/span><span style=\"font-weight: 400;\">=R<sub>sch<\/sub><\/span><span style=\"font-weight: 400;\">)\uff0c\u56e0\u70ba\u4e00\u4f46\u9032\u5165\u4e86\u9ed1\u6d1e\u7684\u4e8b\u4ef6\u8996\u754c\uff0c\u5c31\u518d\u4e5f\u56de\u4e0d\u5230\u5916\u90e8\u5b87\u5b99\u4e86\u3002<\/span><\/p><p><span style=\"font-weight: 400;\">\u5716\u4e00\u756b\u51fa\u4e0d\u540c\u7684\u9ed1\u6d1e\u8cea\u91cf(\u4ee5\u592a\u967d\u8cea\u91cf\u70ba\u55ae\u4f4d)\u6240\u5c0d\u61c9\u7684\u53f2\u74e6\u8332\u534a\u5f91(\u4ee5\u516c\u91cc\u70ba\u55ae\u4f4d)\u5927\u5c0f\u3002\u6839\u64da\u89c0\u6e2c\uff0c\u5b58\u5728\u65bc\u5b87\u5b99\u4e2d\u4e14\u88ab\u666e\u904d\u89c0\u5bdf\u5230\u9ed1\u6d1e\u53ef\u4ee5\u6839\u64da\u8cea\u91cf\u5206\u985e\u70ba<\/span><b>\u6046\u661f\u7d1a\u8cea\u91cf\u9ed1\u6d1e<\/b><span style=\"font-weight: 400;\">(stellar-mass black holes, \u7d04\u6709\u6578\u5341\u500b\u592a\u967d\u8cea\u91cf\uff1b\u53c3\u8003\u5716\u4e8c\u8207\u5716\u4e09)\uff0c\u4ee5\u53ca<\/span><b>\u8d85\u5927\u8cea\u91cf\u9ed1\u6d1e<\/b><span style=\"font-weight: 400;\">(super massive black holes, \u7d04\u6709\u6578\u767e\u842c\u5230\u6578\u5341\u5104\u500b\u592a\u967d\u8cea\u91cf\uff1b\u53c3\u8003\u5716\u56db\u8207\u5716\u4e94)\u3002\u00a0<\/span><\/p><p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-7366\" src=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u535c\u8001\u5e2b\u5716\u7247-1-300x199.png\" alt=\"\" width=\"332\" height=\"220\" srcset=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u535c\u8001\u5e2b\u5716\u7247-1-300x199.png 300w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u535c\u8001\u5e2b\u5716\u7247-1-768x510.png 768w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u535c\u8001\u5e2b\u5716\u7247-1.png 866w\" sizes=\"(max-width: 332px) 100vw, 332px\" \/><\/p><p><span style=\"font-weight: 400;\">\u5716\u4e00:\u9ed1\u8272\u5713\u5f62\u8868\u793a\u9ed1\u6d1e\u8cea\u91cf(\u4ee5\u592a\u967d\u8cea\u91cf\u70ba\u55ae\u4f4d)\u6240\u5c0d\u61c9\u7684\u53f2\u74e6\u8332\u534a\u5f91(\u4ee5\u516c\u91cc\u70ba\u55ae\u4f4d)\u5927\u5c0f\u3002\u4e00\u500b\u5177\u6709\u7d0410<sup>3<\/sup><\/span><span style=\"font-weight: 400;\">\u592a\u967d\u8cea\u91cf\u7684\u9ed1\u6d1e\u5927\u6982\u6709\u5730\u7403\u90a3\u9ebc\u5927\uff1b\u4e00\u500b\u5177\u6709\u7d0410<sup>7<\/sup><\/span><span style=\"font-weight: 400;\">\u592a\u967d\u8cea\u91cf\u7684\u9ed1\u6d1e\uff0c\u5176\u534a\u5f91\u5247\u6709\u592a\u967d\u5230\u51a5\u738b\u661f(Pluto)\u7684\u8ddd\u96e2\u90a3\u9ebc\u5927! \u5716\u4e2d\u7d05\u8272\u6578\u64da\u6a19\u793a\u51fa\u5728\u4e8b\u4ef6\u8996\u754c\u5167\u7684\u5e73\u5747\u5bc6\u5ea6\u3002\u8d8a\u5927\u7684\u9ed1\u6d1e\u5176\u5bc6\u5ea6\u8d8a\u4f4e (\u60f3\u4e00\u60f3\u70ba\u4ec0\u9ebc?)\u3002\u59b3\u53ef\u4ee5\u770b\u51fa\uff0c\u5982\u679c\u5c07\u592a\u967d\u7cfb\u90fd\u586b\u6eff\u6c34(\u5bc6\u5ea6\u70ba1 g\/cm<\/span><span style=\"font-weight: 400;\"><sup>3<\/sup><\/span><span style=\"font-weight: 400;\">)\uff0c\u5c07\u6709\u8db3\u72d7\u7684\u81ea\u8eab\u91cd\u529b\u800c\u7522\u751f\u9ed1\u6d1e\u55ce?<\/span><\/p><p><span style=\"font-weight: 400;\">credit: \u535c\u5b8f\u6bc5\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">\u00a0<\/span><\/p><p><img decoding=\"async\" class=\"alignnone wp-image-7367\" src=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u535c\u8001\u5e2b\u5716\u7247-2-282x300.png\" alt=\"\" width=\"261\" height=\"278\" srcset=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u535c\u8001\u5e2b\u5716\u7247-2-282x300.png 282w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u535c\u8001\u5e2b\u5716\u7247-2.png 708w\" sizes=\"(max-width: 261px) 100vw, 261px\" \/><br \/><span style=\"font-weight: 400;\">\u5716\u4e8c: \u76ee\u524d\u89c0\u6e2c\u5230\u7d04\u6709\u4e8c\u5341\u500b\u6046\u661f\u7d1a\u8cea\u91cf\u7684\u9ed1\u6d1e\u7cfb\u7d71\uff0c\u53ef\u4ee5\u85c9\u7531\u8207\u4f34\u661f(companion star)\u7684\u4ea4\u4e92\u4f5c\u7528\u4ee5\u53ca\u5176\u9ed1\u6d1e\u5468\u570d\u7684\u5438\u7a4d\u76e4(accretion)\u6240\u767c\u51fa\u7684X-\u5c04\u7dda\u88ab\u89c0\u6e2c\u5230\u3002\u5716\u4e2d\u5c07\u9019\u4e9b\u9ed1\u6d1eX-\u5c04\u7dda\u96d9\u661f\u7cfb\u7d71(black hole X-ray binaries)\u4f9d\u7167\u6bd4\u4f8b\u756b\u51fa\u3002\u4f5c\u70ba\u6bd4\u4f8b\u5c3a\uff0c\u5716\u4e0a\u65b9\u4e5f\u756b\u51fa\u592a\u967d\u8207\u6c34\u661f(Mercury)\u7684\u8ddd\u96e2\u3002<\/span><\/p><p><span style=\"font-family: arial, 'Microsoft JhengHei', sans-serif; font-size: 15px; font-weight: 400;\">credit:<\/span><span style=\"font-family: arial, 'Microsoft JhengHei', sans-serif; font-size: 15px; font-weight: 400;\">Jerome Orosz<\/span><\/p><p><img decoding=\"async\" class=\"alignnone size-medium wp-image-7363\" src=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-3png-300x249.png\" alt=\"\" width=\"300\" height=\"249\" srcset=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-3png-300x249.png 300w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-3png.png 683w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>\u5716\u4e09:\u85c9\u7531\u5075\u6e2c\u9060\u65b9\u5169\u500b\u9ed1\u6d1e\u5408\u4f75\u6240\u50b3\u9054\u5230\u5730\u7403\u7684\u6642\u7a7a\u64fe\u52d5\uff0c \u5730\u9762\u4e0a\u7684\u91cd\u529b\u6ce2\u63a2\u6e2c\u5668(\u4f8b\u5982LIGO\u8207VIRGO)\u63d0\u4f9b\u4e86\u53e6\u4e00\u7a2e\u767c\u73fe\u6046\u661f\u7d1a\u8cea\u91cf\u9ed1\u6d1e\u7cfb\u7d71\u7684\u65b9\u5f0f(\u85cd\u8272\u5716\u793a)\u3002\u5716\u4e8c\u4e2d\u7684\u9ed1\u6d1eX-\u5c04\u7dda\u96d9\u661f\u7cfb\u7d71\u5247\u7528\u7d2b\u8272\u5716\u793a\u3002\u5716\u4e2d\u4e5f\u756b\u51fa\u5df2\u89c0\u6e2c\u5230\u7684\u4e2d\u5b50\u661f\u7cfb\u7d71\uff0c\u4ee5\u9ec3\u8272\u5716\u793a\u3002<\/p><p>credit: LIGO-Virgo\/Frank Elavsky\/Northwestern University<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-7364\" src=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-4-300x240.png\" alt=\"\" width=\"300\" height=\"240\" srcset=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-4-300x240.png 300w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-4-768x613.png 768w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-4.png 814w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>\u5716\u56db:Centaurus A (\u534a\u4eba\u99ac\u5ea7 A) \u5728\u4e0d\u540c\u96fb\u78c1\u6ce2\u6ce2\u6bb5(\u53ef\u898b\u5149\uff0cX-\u5c04\u7dda\uff0c\u7d05\u5916\u7dda\uff0c\u7121\u9650\u96fb\u6ce2)\u7684\u89c0\u6e2c\u3002\u534a\u4eba\u99ac\u5ea7 A\u661f\u7cfb\u4e2d\u5fc3\u6709\u500b\u7d04\u4e94\u767e\u4e94\u5341\u842c\u7684\u592a\u967d\u8cea\u91cf\u7684\u9ed1\u6d1e\uff0c\u662f\u8d85\u5927\u8cea\u91cf\u9ed1\u6d1e\u7684\u4e00\u500b\u7bc4\u4f8b(\u60f3\u60f3\u770b\u9019\u500b\u9ed1\u6d1e\u7684\u5c3a\u5bf8\u6709\u6bd4\u592a\u967d\u7cfb\u9084\u8981\u5927\u55ce?)\u3002\u5716\u4e2d\u7684\u5927\u5c3a\u5ea6\u5674\u6d41\u7684\u6e90\u982d\u6b63\u662f\u661f\u7cfb\u4e2d\u5fc3\u7684\u8d85\u5927\u8cea\u91cf\u9ed1\u6d1e!<\/p><p>credit:X-ray: NASA\/CXC\/SAO; optical: Rolf Olsen; infrared: NASA\/JPL-Caltech; radio: NRAO\/AUI\/NSF\/Univ.Hertfordshire\/M.Hardcastle<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-7365\" src=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-5-300x298.png\" alt=\"\" width=\"300\" height=\"298\" srcset=\"https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-5-300x298.png 300w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-5-150x150.png 150w, https:\/\/www.cag.ntnu.edu.tw\/wp-content\/uploads\/\u5716\u7247-5.png 768w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>\u5716\u4e94: \u4eba\u985e\u53f2\u4e0a\u7684\u7b2c\u4e00\u5f35\u9ed1\u6d1e\u5f71\u50cf\u662fM87\u661f\u7cfb\u4e2d\u5fc3\u7684\u8d85\u5927\u8cea\u91cf\u9ed1\u6d1e\uff0c\u7d04\u6709\u516d\u5341\u4e94\u5104\u500b\u592a\u967d\u8cea\u91cf\u3002\u7167\u7247\u4e2d\u592e\u9ed1\u8272\u5340\u57df\u6b63\u662f\u56e0\u70ba\u9ed1\u6d1e\u5468\u570d\u767c\u5149\u7269\u8cea\u6240\u70d8\u6258\u51fa\u9ed1\u6d1e\u7684&#8221;\u526a\u5f71&#8221;\u3002\u5716\u4e2d\u4f9d\u7167\u6bd4\u4f8b\u756b\u51fa\u592a\u967d\u5230\u51a5\u738b\u661f(Pluto)\u7684\u8ddd\u96e2\u3002<\/p><p>credit: <a href=\"https:\/\/xkcd.com\/2135\/\">webcomic XKCD<\/a><\/p><p>\u64b0\u6587\u8005\uff1a\u535c\u5b8f\u6bc5<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u5728\u4e0a\u7bc7\u6587\u7ae0&#8221;\u91cd\u529b\u6bd4\u4e00\u6bd4&#8221;\u7684\u8a0e\u8ad6\uff0c\u6211\u5011\u63d0\u5230\u4fdd\u6301\u8cea\u91cfM\u4e0d\u8b8a\u4f46\u5c07\u661f\u9ad4\u534a\u5f91r\u6f38\u6f38\u7e2e\u5c0f\u6642\uff0c\u5ee3\u7fa9\u76f8 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