User: barry.wardell Date: 2016/06/15 09:43 AM

Modified: /about/gallery/gw150914/ index.php

Log: gw150914: Add figure captions and restructure slightly

File Changes:

Directory: /about/gallery/gw150914/ ===================================

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<p>On February 11, 2016, the <a href="http://www.ligo.org/">LIGO collaboration</a> <a href="http://www.ligo.org/news/detection-press-release.pdf">announced</a> that they had achieved @@ -72,39 +75,51 @@ </table>

-<h3>Tutorials and data</h3> -<h4>Tutorials</h4> +<h3>Tutorials</h3> <ul> <li><a href="compile_and_run.php">Compile and run</a>: Compile the code and run the simulation</li> - <li><a href="https://bitbucket.org/barrywardell/gw150914sim/wiki/Analysis%20tutorial">Analysis</a>: Analyse the results using SimulationTools for Mathematica (<span style="background-color: yellow">unfinished</span>)</li> - <li><a href="https://bitbucket.org/barrywardell/gw150914sim/wiki/Visualising%20the%20spacetime%20with%20VisIt">Visualisation</a>: Visualise the data using VisIt (<span style="background-color: yellow">unfinished</span>)</li> + <li><a href="GW150914.nb">Analysis</a>: Analyse the results using SimulationTools for Mathematica</li> + <li><a href="https://docs.einsteintoolkit.org/et-docs/GW150914_VisIt_Tutorial">Visualisation</a>: Visualise the data using VisIt</li> </ul>

-<h4>Simulation data</h3> +<h3>Simulation data</h3> <ul> - <li><a href="GW150914_32.tar.gz">Lightweight simulation data</a> (500MB) (<span style="background-color: yellow">not yet uploaded</span>)</li> - <li>Full simulation data (available on request) (<span style="background-color: yellow">to whom?</span>)</li> + <li><a href="GW150914_32.tar.gz">Lightweight simulation data</a> (500MB)</li> + <li>Full simulation data (available on request)</li> </ul>

<h3>Images and movies</h3>

<h4>Horizons</h4> + <a href="horizons.png"><img src="horizons.png" alt="BH horizons" width="310" height="300"/></a> +<p class="caption">Apparent horizons of the orbiting black holes.</p>

<h4>Horizon coordinate trajectories</h4> <a href="trajectories.png"><img src="trajectories_sm.png" srcset="trajectories.png 2x" alt="BH trajectories" width="242" height="236"/></a> +<p class="caption">Coordinate tracks of the centroids of the apparent horizons showing inspiral of the binary due to emission of energy and angular momentum in gravitational waves</p>

+<h4>Gravitational waveform</h4> +<a href="waveform.png"><img src="waveform_sm.png" srcset="waveform.png 2x" alt="h_+^{2,2} at r=500M as a function of retarded time" width="542" height="188"/></a> +<p class="caption">The l=2, m=2 spherical harmonic mode of the gravitational wave strain. The strain is what is measured by LIGO.</p> + <h4>Curvature scalars</h4> <a href="ReI.png"><img src="ReI_sm.png" srcset="ReI_sm_2x.png 2x" alt="R_{abcd} R^{abcd}" width="357" height="300"/></a> +<p class="caption">The scalar curvature invariant `R_abcd R^abcd` - known as the Kretschmann scalar - computed from the +square of the Riemann tensor.</p> <a href="ImI.png"><img src="ImI_sm.png" srcset="ImI_sm_2x.png 2x" alt="R^*_{abcd} R^{abcd}" width="342" height="300"/></a> +<p class="caption">The dual scalar curvature invariant `R_abcd ^* R^abcd` - known as the Chern-Pontryagin scalar - computed from the +product of the Riemann tensor and its dual.</p> + <a href="RePsi4.png"><img src="RePsi4_sm.png" srcset="RePsi4_sm_2x.png 2x" alt="Re(Psi_4)" width="299" height="300"/></a> +<p class="caption">The real part of `Psi_4`, the component of the Riemann tensor representing outgoing gravitational radiation.</p>

<h4>Gravitational waves</h4> <a href="Strain.png"><img src="Strain_sm.png" srcset="Strain_sm_2x.png 2x" alt="h_+ at t=700M" width="400" height="300"/></a> +<p class="caption">Animation of the gravitational waves emitted from the binary.</p> + <iframe width="560" height="315" src="https://www.youtube.com/embed/videoseries?list=PLy_i7YBcuUSgp3GMUkmVqiWuP-jE5Is3f&rel=0" frameborder="0" allowfullscreen></iframe> +<p class="caption">Animation of the gravitational waves emitted from the binary.</p>

-<h4>Gravitational waveform</h4> -<a href="waveform.png"><img src="waveform_sm.png" srcset="waveform.png 2x" alt="h_+^{2,2} at r=500M as a function of retarded time" width="542" height="188"/></a> - <?php include_once($_SERVER['DOCUMENT_ROOT'].'/global/footer.php');?>