B
BoJangles
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<p><span><font size="3"><font face="Calibri">It pains me to start another dark matter thread, but i fear this post will be lost in the other thread i posted.</font></font></span></p><p><span><font face="Calibri" size="3">---</font> </span></p><p><span><font size="3"><font face="Calibri">What confuses me about Dark Matter is as follows:-</font></font></span></p><ul><li><div class="MsoNormal" style="margin-top:0cm;margin-left:0cm;line-height:normal;margin-right:0cm"><span><font size="3"><font face="Calibri">Dark Matter obviously moves through space, as the bullet cluster is a prime example of this.</font></font></span></div></li><li><div class="MsoNormal" style="margin-top:0cm;margin-left:0cm;line-height:normal;margin-right:0cm"><span><font size="3"><font face="Calibri">Dark Matter obviously interacts gravitationally with normal matter, that's how we discovered it (rotation curves).</font></font></span></div></li></ul><p style="margin-top:0cm;margin-left:0cm;line-height:normal;margin-right:0cm" class="MsoNormal"> </p><p style="margin-top:0cm;margin-left:0cm;line-height:normal;margin-right:0cm" class="MsoNormal"><span><font size="3"><font face="Calibri">Q1) Does Baryonic Matter also interacts gravitationally with dark matter, or is this a one way affair? </font></font></span></p><p style="margin-top:0cm;margin-left:0cm;line-height:normal;margin-right:0cm" class="MsoNormal"><span><font size="3"><font face="Calibri">Q2) If Baryonic matter does interact gravitationally with Dark Matter, why hasn’t Dark Matter formed a disk like everything else in a spiral galaxy?</font></font></span></p><p><span><font size="3"><font face="Calibri">Q3) Why doesn’t Dark Matter collapse into the centre of a galaxy in higher concentrations? That's to say why hasn't it condensed?</font></font></span></p><p><span><font size="3"><font face="Calibri">---</font></font></span> </p><p><span><font size="3"><font face="Calibri">If dark matter was a particle (Baryonic or not) and wasn't gravitationally affected by Baryonic Matter, and its size was 1000 times more massive than the largest atomic radius of any element we know (Cesium (Cs)), it still wouldn't be enough to stop it collapsing into a smaller space given enough time.</font></font></span></p><p style="margin-top:0cm;margin-left:0cm;line-height:normal;margin-right:0cm" class="MsoNormal"><span><font size="3"><font face="Calibri">Additionally given that there's a disk in a spiral galaxy, why hasn't the interaction with the gravity inherent with Baryonic matter caused it to form a disk as well? I.e. Given enough time, any normal particle in the halo couldn't hold such a shape without collapsing, furthermore, even if it was the case that dark matter is in orbit around the galaxy (assuming Baryonic matter does affect it gravitationally), the interaction with the disk alone should help it form a disk.</font></font></span></p><p style="margin-top:0cm;margin-left:0cm;line-height:normal;margin-right:0cm" class="MsoNormal"><span><font size="3"><font face="Calibri">It seems (and I speculate due to lack of understanding) that the only way you could keep dark matter in a halo, is if the dark the matter particle (or what not) has a huge radius many millions of times bigger than any element we know (given its gravitational effects). This may explain why it doesn’t interact with the electromagnetic force and it dosnt form black holes, can it not?</font></font></span></p><p><span><font size="3"><font face="Calibri">Does anyone have thoughts on this, or can show me the errors in my ways?</font></font></span> </p><p>---</p><p>If someone answers me in the thread <font color="#5574b9">Dark Matter - It is not dark matter</font> ill remove this one.</p><p> </p> <div class="Discussion_UserSignature"> <p align="center"><font color="#808080">-------------- </font></p><p align="center"><font size="1" color="#808080"><em>Let me start out with the standard disclaimer ... I am an idiot, I know almost nothing, I haven’t taken calculus, I don’t work for NASA, and I am one-quarter Bulgarian sheep dog. With that out of the way, I have several stupid questions... </em></font></p><p align="center"><font size="1" color="#808080"><em>*** A few months blogging can save a few hours in research ***</em></font></p> </div>