Why does not dark matter gather and form celestial bodies?How Does Dark Matter Form Lumps?Why does dark matter form walls and filamentsDoes a black hole have any kind of mass?Is there a binary black hole system in the middle of the galaxy?A Theory of Almost Everything?Density of dark matter along the galaxyQuestions about shape of dark matter orbits in spiral galaxiesDark matter annihilation cross sectionWhy does dark matter form a halo, Unlike normal matter?Why does dark matter form halos?
Do airline pilots ever risk not hearing communication directed to them specifically, from traffic controllers?
N.B. ligature in Latex
Motorized valve interfering with button?
When blogging recipes, how can I support both readers who want the narrative/journey and ones who want the printer-friendly recipe?
Is there a minimum number of transactions in a block?
Finding files for which a command fails
What is the meaning of "of trouble" in the following sentence?
Why does not dark matter gather and form celestial bodies?
What is the logic behind how bash tests for true/false?
Simulate Bitwise Cyclic Tag
Copenhagen passport control - US citizen
How do I create uniquely male characters?
Where to refill my bottle in India?
XeLaTeX and pdfLaTeX ignore hyphenation
Is there really no realistic way for a skeleton monster to move around without magic?
Circuitry of TV splitters
Closed subgroups of abelian groups
Calculus Optimization - Point on graph closest to given point
Showing the closure of a compact subset need not be compact
How is the claim "I am in New York only if I am in America" the same as "If I am in New York, then I am in America?
Can town administrative "code" overule state laws like those forbidding trespassing?
How is it possible for user's password to be changed after storage was encrypted? (on OS X, Android)
least quadratic residue under GRH: an EXPLICIT bound
What is the white spray-pattern residue inside these Falcon Heavy nozzles?
Why does not dark matter gather and form celestial bodies?
How Does Dark Matter Form Lumps?Why does dark matter form walls and filamentsDoes a black hole have any kind of mass?Is there a binary black hole system in the middle of the galaxy?A Theory of Almost Everything?Density of dark matter along the galaxyQuestions about shape of dark matter orbits in spiral galaxiesDark matter annihilation cross sectionWhy does dark matter form a halo, Unlike normal matter?Why does dark matter form halos?
$begingroup$
since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.
so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?
PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!
particle-physics gravity cosmology astrophysics dark-matter
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
$endgroup$
add a comment |
$begingroup$
since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.
so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?
PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!
particle-physics gravity cosmology astrophysics dark-matter
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
$endgroup$
add a comment |
$begingroup$
since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.
so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?
PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!
particle-physics gravity cosmology astrophysics dark-matter
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
$endgroup$
since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.
so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?
PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!
particle-physics gravity cosmology astrophysics dark-matter
particle-physics gravity cosmology astrophysics dark-matter
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
asked 1 hour ago
NimbleDick CrabbNimbleDick Crabb
312
312
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.
edited 28 mins ago
innisfree
12k33162
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
$endgroup$
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
return StackExchange.using("mathjaxEditing", function ()
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
);
);
, "mathjax-editing");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "151"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fphysics.stackexchange.com%2fquestions%2f471226%2fwhy-does-not-dark-matter-gather-and-form-celestial-bodies%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.
edited 28 mins ago
innisfree
12k33162
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
$endgroup$
add a comment |
$begingroup$
The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.
edited 28 mins ago
innisfree
12k33162
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
$endgroup$
add a comment |
$begingroup$
The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.
edited 28 mins ago
innisfree
12k33162
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
$endgroup$
The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.
edited 28 mins ago
innisfree
12k33162
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
edited 28 mins ago
innisfree
12k33162
edited 28 mins ago
innisfree
12k33162
edited 28 mins ago
innisfree
12k33162
12k33162
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
answered 32 mins ago
Anders SandbergAnders Sandberg
10.1k21530
10.1k21530
add a comment |
add a comment |
Thanks for contributing an answer to Physics Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fphysics.stackexchange.com%2fquestions%2f471226%2fwhy-does-not-dark-matter-gather-and-form-celestial-bodies%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
