<div dir="ltr">> <font face="arial, helvetica, sans-serif" style="font-size:large">The </font><span style="font-size:large">supermassive black hole in the center of our Galaxy will produce no gravity waves, but 2 much much smaller neutron stars in a close orbit will.</span><div><span style="font-size:large"><br></span></div><div><span style="font-size:large">Agree. Unless something (a small black hole, neutron star etc ..) will fall in.</span></div><div><span style="font-size:large"><br></span></div><div><font size="4">Those giant black holes, have swollen millions of black holes during past 10 billion years. Each. And there are billion of them. Many such occurrences every year, even every day.</font></div><div><font size="4"><br></font></div><div><font size="4">We do not detect those. Why?</font></div><div><font size="4"><br></font></div><div><font size="4">As someone said about SETI - listening for droplets, where a Niagara falls thunder should be!</font></div><div><font size="4"><br></font></div><div><font size="4"><br></font></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Feb 13, 2016 at 7:40 PM, John Clark <span dir="ltr"><<a href="mailto:johnkclark@gmail.com" target="_blank">johnkclark@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span class=""><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><span style="font-family:arial,sans-serif">On Sat, Feb 13, 2016 at 6:50 AM, Tomaz Kristan </span><span dir="ltr" style="font-family:arial,sans-serif"><<a href="mailto:protokol2020@gmail.com" target="_blank">protokol2020@gmail.com</a>></span><span style="font-family:arial,sans-serif"> wrote:</span><br></div></span><div class="gmail_extra"><div class="gmail_quote"><span class=""><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">> </div>what's bothering me is also the super-massive black hole in our Galaxy, five orders of magnitude closer and about five orders of magnitude as massive, orbiting by many massive stars ... but no gravity waves from there.<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline"> </div>That was my line of reasoning all along. If we can't gravitationally see this, how we could see something much smaller, so far away?</div></blockquote><div><br></div></span><div><div class="gmail_default"><font size="4"><font face="arial, helvetica, sans-serif">The only thing that can make gravitational waves is an accelerating mass, so a black hole that is just sitting there will not produce gravitational waves no matter how big the hole is. Even a giant star the runs out of fuel and collapses into a black hole will not produce gravity waves because the collapse is symmetrical and the waves will cancel out. You need asymmetry for waves such as happens when 2 orbiting black holes merge. The </font>supermassive black hole in the center of our Galaxy will produce no gravity waves, but 2 much much smaller neutron stars in a close orbit will.</font></div></div><div class="gmail_default"><font size="4"><br></font></div><div class="gmail_default"><font size="4"> John K Clark</font></div><div><font size="4"> </font></div><div><br></div><div> </div></div></div></div>
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