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This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available
on the course page. Student editor(s):
Drbingbing. Peer reviewers:
WhiskeyJack27.
Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT ( talk) 00:44, 17 January 2022 (UTC)
I created this page today; it's a pretty bare-bones overview, but I'd love to see somebody give a little history or examples of relevance. Perhaps when I have more time I can add some of that myself! Motorneuron 17:16, 27 February 2006 (UTC)motorneuron
I am not an expert on this subject, but I know enough about physics and astronomy to know that there are many substantive and factual errors in this entry. No references are cited, much of the basic terminology is used incorrectly, and some of the material sounds, frankly, made up. I will recommend this article for deletion or delete it myself unless improvements/citations are made. Wikipedia is not an area to promote your own research, untested (or not thouroughly tested) theories, or personnal ideas or beliefs. MPA —Preceding
unsigned comment added by
140.32.122.60 (
talk)
22:25, 27 December 2007 (UTC)
Galaxy clusters are merely collections of galaxies held together by mutual gravitational attraction (I know dark matter is involved as well, but that doesn't speak to this discussion). They do not have clearly defined "centers." Volume-wise or center-of-gravity-wise, the central point of most clusters is simply a point in (virtually) empty intergalactic space. What is the difference between the intergalactic and intracluster medium? As far as I'm aware, there is none. While some galaxy clusters may, by happenstance, have a large central galaxy near where their supposed "centers" appear to be, this is only by coincidence. This is the case with Abell 2199. The picture of Abell 2199 used at the beginning of the article is misleading and should not be used because it is not even a picture of Abell 2199 in its entirety, but of only a single galaxy (I assume the large galaxy that happens to lie near its "center," but even this is not clear). It is clear the picture is of only a single galaxy from the distance scale on the right side of the picture labeled "50 thousand light years." This is the scale of galaxies, not galaxy clusters, which are on the scale of megaparsecs. The caption of that picture is incorrect as it is describing the interstellar medium of that particular galaxy, not of galaxy cluster Abell 2199. There are certainly X-Ray sources within galaxies and from active galaxies, but not from the material between galaxies (as far as I'm aware, though I know stars do occasionally get ejected from galaxies). Anyway, I've gone on enough. Most of the rest of the assertions in this article sound similarly suspect. But, like I said, I am no expert. Prove me wrong with some sort of evidence or delete this article. MPA —Preceding
unsigned comment added by
140.32.122.60 (
talk)
20:16, 18 March 2008 (UTC)
It states an absurdity and the 1 source given provides no support for same. Possible purposeful hoax/attempt to discredit wiki.
Lycurgus (
talk)
05:28, 28 December 2008 (UTC)
The line: "However, most of the mass in a galaxy cluster consists of dark matter." is written as if dark matter is a proven fact. It is not, it is just a theory. Maybe change it to: "..may consists of dark matter." ? — Preceding unsigned comment added by Gerard.van.Dorst ( talk • contribs) 07:56, 21 June 2015 (UTC)
I was assigned this article for a wiki edu project. I have reworded most of the article for clarity and flow, added citations to important information, and updated a section with more current information. The Heating section could still use some work as I ran out of time and in my opinion the cooling flows section could be a little more fleshed out with properties of the flow including models of the inhomogeneities, multi-phase gas models, and entropy models. I also would like to include a bit more about the heating mechanisms as the section is very brief and not particularly enlightening. Drbingbing ( talk) 21:45, 19 March 2017 (UTC)
I went ahead and removed the "Shockingly unsubstantiated material" after backing up some claims and reworking others. I'll be keeping an eye on this page and updating as semi-regularly as new Chandra studies are done. Drbingbing ( talk) 18:29, 11 January 2019 (UTC)
The following Wikimedia Commons file used on this page has been nominated for deletion:
Participate in the deletion discussion at the nomination page. — Community Tech bot ( talk) 01:59, 9 January 2020 (UTC)
How does Warm–hot intergalactic medium relate? Subset? Disjoint? Competing concept? -- JWB ( talk) 16:59, 24 June 2020 (UTC)
![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||
|
This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available
on the course page. Student editor(s):
Drbingbing. Peer reviewers:
WhiskeyJack27.
Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT ( talk) 00:44, 17 January 2022 (UTC)
I created this page today; it's a pretty bare-bones overview, but I'd love to see somebody give a little history or examples of relevance. Perhaps when I have more time I can add some of that myself! Motorneuron 17:16, 27 February 2006 (UTC)motorneuron
I am not an expert on this subject, but I know enough about physics and astronomy to know that there are many substantive and factual errors in this entry. No references are cited, much of the basic terminology is used incorrectly, and some of the material sounds, frankly, made up. I will recommend this article for deletion or delete it myself unless improvements/citations are made. Wikipedia is not an area to promote your own research, untested (or not thouroughly tested) theories, or personnal ideas or beliefs. MPA —Preceding
unsigned comment added by
140.32.122.60 (
talk)
22:25, 27 December 2007 (UTC)
Galaxy clusters are merely collections of galaxies held together by mutual gravitational attraction (I know dark matter is involved as well, but that doesn't speak to this discussion). They do not have clearly defined "centers." Volume-wise or center-of-gravity-wise, the central point of most clusters is simply a point in (virtually) empty intergalactic space. What is the difference between the intergalactic and intracluster medium? As far as I'm aware, there is none. While some galaxy clusters may, by happenstance, have a large central galaxy near where their supposed "centers" appear to be, this is only by coincidence. This is the case with Abell 2199. The picture of Abell 2199 used at the beginning of the article is misleading and should not be used because it is not even a picture of Abell 2199 in its entirety, but of only a single galaxy (I assume the large galaxy that happens to lie near its "center," but even this is not clear). It is clear the picture is of only a single galaxy from the distance scale on the right side of the picture labeled "50 thousand light years." This is the scale of galaxies, not galaxy clusters, which are on the scale of megaparsecs. The caption of that picture is incorrect as it is describing the interstellar medium of that particular galaxy, not of galaxy cluster Abell 2199. There are certainly X-Ray sources within galaxies and from active galaxies, but not from the material between galaxies (as far as I'm aware, though I know stars do occasionally get ejected from galaxies). Anyway, I've gone on enough. Most of the rest of the assertions in this article sound similarly suspect. But, like I said, I am no expert. Prove me wrong with some sort of evidence or delete this article. MPA —Preceding
unsigned comment added by
140.32.122.60 (
talk)
20:16, 18 March 2008 (UTC)
It states an absurdity and the 1 source given provides no support for same. Possible purposeful hoax/attempt to discredit wiki.
Lycurgus (
talk)
05:28, 28 December 2008 (UTC)
The line: "However, most of the mass in a galaxy cluster consists of dark matter." is written as if dark matter is a proven fact. It is not, it is just a theory. Maybe change it to: "..may consists of dark matter." ? — Preceding unsigned comment added by Gerard.van.Dorst ( talk • contribs) 07:56, 21 June 2015 (UTC)
I was assigned this article for a wiki edu project. I have reworded most of the article for clarity and flow, added citations to important information, and updated a section with more current information. The Heating section could still use some work as I ran out of time and in my opinion the cooling flows section could be a little more fleshed out with properties of the flow including models of the inhomogeneities, multi-phase gas models, and entropy models. I also would like to include a bit more about the heating mechanisms as the section is very brief and not particularly enlightening. Drbingbing ( talk) 21:45, 19 March 2017 (UTC)
I went ahead and removed the "Shockingly unsubstantiated material" after backing up some claims and reworking others. I'll be keeping an eye on this page and updating as semi-regularly as new Chandra studies are done. Drbingbing ( talk) 18:29, 11 January 2019 (UTC)
The following Wikimedia Commons file used on this page has been nominated for deletion:
Participate in the deletion discussion at the nomination page. — Community Tech bot ( talk) 01:59, 9 January 2020 (UTC)
How does Warm–hot intergalactic medium relate? Subset? Disjoint? Competing concept? -- JWB ( talk) 16:59, 24 June 2020 (UTC)