File:Structure mode history.svg
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this PNG preview of this SVG file: 366 × 289 pixels. Other resolutions: 304 × 240 pixels | 608 × 480 pixels | 973 × 768 pixels | 1,280 × 1,011 pixels | 2,560 × 2,021 pixels.
Original file (SVG file, nominally 366 × 289 pixels, file size: 53 KB)
File information
Structured data
Captions
Summary[edit]
DescriptionStructure mode history.svg |
English: This figure depicts two linear modes during the formation of structure in our universe. The two modes have the same wavelength. The dashed line is a cold dark matter (CDM) mode and the solid line is a baryon mode. The modes enter the (Hubble) horizon volume during radiation domination. The evolution of the modes up to this point is not very important, as it looks different for different choices of gauge. Upon horizon entry the baryonic mode is coupled to the baryon-radiation fluid, and oscillates as pressure prevents overdensities from collapsing below the Jeans mass. The CDM mode grows logarithmically during radiation domination. At matter-radiation equality the CDM mode begins to grow more quickly. At subsequent decoupling of radiation from the baryons (and consequent enormous drop in the Jeans mass for baryons), baryons start falling into the gravitational potentials established by the CDM, and the baryonic mode begins to closely mimic the CDM mode. This figure thus illustrates the pivotal importance of CDM for structure formation. Horizon entry and decoupling are marked at the top of the figure.
The calculation was performed for current best-fit values of the Lambda-CDM model. The mode has wavelength exactly one-thousandth the Hubble radius today, or approximately 4.2 Mpc. The figure includes all linear physics except that decoupling is treated as an instantaneous process occurring at redshift 1100. The basic formalism used to compute all this can be found in T. Padmanabhan, Structure formation in the universe (cited in physical cosmology). |
Date | 30 September 2006 (original upload date) |
Source | This is my work, calculated using a code I wrote myself, plotted in Gnuplot and edited in Adobe Illustrator. |
Author | Joke137 at English Wikipedia |
Licensing[edit]
Joke137 at English Wikipedia, the copyright holder of this work, hereby publishes it under the following licenses:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Subject to disclaimers. | ||
Attribution: Joke137 at English Wikipedia | ||
| ||
This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Subject to disclaimers.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
Attribution: Joke137 at English Wikipedia
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.
Original upload log[edit]
The original description page was here. All following user names refer to en.wikipedia.
- 2006-09-30 04:46 Joke137 366×289× (54733 bytes) Effort to get text to display correctly
- 2006-09-30 04:37 Joke137 366×289× (54975 bytes) This is my work. This figure depicts two linear modes during the formation of structure in our universe. The two modes have the same wavelength. The dashed line is a cold dark matter (CDM) mode and the solid line is a baryon mode. The modes enter the (H
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 21:53, 4 January 2014 | 366 × 289 (53 KB) | OgreBot (talk | contribs) | (BOT): Reverting to most recent version before archival | |
21:52, 4 January 2014 | 366 × 289 (54 KB) | OgreBot (talk | contribs) | (BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2006-09-30 04:37:43 by Joke137 | ||
01:13, 1 November 2012 | 366 × 289 (53 KB) | Esprit Fugace (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on ca.wikipedia.org
- Usage on en.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on pt.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Width | 365.824 |
---|---|
Height | 289.133 |