FG21sim: v0.9.0

• Significantly improve the modeling of radio halos.

  • A more reasonable estimation of the turbulence region size (relating with the stripping radius of the in-falling sub-cluster).
  • Improved calculation of merger-induced turbulence velocity dispersion (i.e., Mach number) and acceleration velocity.
  • More configuration parameters to fine-tune the correlation assumptions in the model.
  • Fine-tuned parameters against observations and previous works (observational correlations, simulation/predictions).

• A much better implementation of the halo modeling, including many major updates to the code.

• Many cleanups and minor improvements.

• Update the documentation.

• Remove the obsolete code for point sources.

This is a very significant update over the last v0.7.2, so skip 0.8.x.

FG21sim: v0.7.0

Now, for each cluster, all its merging history in the past, e.g., 3 Gyr, are saved and used to calculate the radio halo properties.

• The cluster catalog is first padded to have the same length due to the different number of merger events for each cluster, and is saved into a CSV file similar to that of the halos CSV catalog, and is also dumped in the pickle format. All merger events are saved.

• Add RadioHaloAM class to use all simulated merger events of a cluster to determine its radio halo properties.

TODO: more tests and tune parameters

FG21sim: v0.6.4

• Estimate the radio halo radius to be the turbulence injection scale:
  f_lturb*R_vir (f_lturb default to be 0.33).

• Calculate the turbulence Mach number (i.e., velocity dispersion) based on
  the merger energy, thus more severe merger (i.e., smaller M_main/M_sub
  ratios) resulting in higher turbulence Mach number (~0.2-0.5) and thus more
  powerful/brighter radio halos.

• Rework the turbulence acceleration timescale calculation, which is simpler
  and more intuitive.

• Tune the maximum turbulence acceleration timescale to 10 Gyr for a more
  consistent simulation results at higher redshifts.

• Various small updates/tweaks and cleanups.

• NOTE: Parameters need further tuning...

Happy New Year!

fg21sim: v0.6.0

This is a major release with many significant changes since last
release (v0.4.2), so just skip v0.5.x ...

Major changes:

• Rewrite the "extragalactic/clusters" foreground component, with giant
  radio halos considered at the moment. A physically motivated model is
  adopted to simulate the giant radio halos: cluster mergers generate
  turbulence inside the ICM, which re-accelerate the electrons to make
  them able to radiate synchrotron emissions.

• Rewrite the "sky" module to support the high-resolution simulation
  within sky patches.

• Add "uvsim" sub-module to generate the SKA1-Low layout configuration
  based on the latest specification (v2016-05-31).

• Significantly update the configs/utils modules, as well as their
  users to make them work better.

What works:

• Patch simulation of "galactic/synchrotron", "galactic/freefree".

• Patch simulation of "extragalactic/clusters"

TODO/problems:

• Update "extragalactic/clusters" and tune its parameters to be
  consistent with the observations and existing works.

• Update "galactic/snr" to support patch simulation.

• Update "extragalactic/pointsources" ...

• Update the Web UI against the recent big changes ...

• Update/add the documentations.

• Support radio relics for the "extragalactic/clusters" besides the
  giant radio halos.

fg21sim: v0.4.0

• Add "products.py" to build the products manifest and manage the
  simulation products
• Finished the "Products" section (original named "Results") for the
  Web UI
• Fix several client-side bugs, now the Web UI works well on Edge and
  IE v11
• Tune the Web UI styles and layouts
• Significantly improved the README.rst
• Add the "docs/" with a simple guide and example and test
  configuration files
• Host the required input templates and catalogs on M$ OneDrive,
  and generate the "data-manifest.json" manifest
• Implement the "bin/fg21sim-download-data" to automatically download
  the required data

fg21sim: v0.3.0

• Major change to the Web UI.
  • The WebSocket is only used to push configurations and logging
    messages to the client;
  • The configuration manipulations and console operations are
    implemented using the AJAX techniques;
  • Modal box is used to notify the AJAX request results, therefore much
    better user experience.
• Several bug fixes to the Web UI.
• Minor improvements to the simulation parts.
• TODO/problems:
  • The console task currently still blocks the Tornado IO loop!
  • The Web UI "results" section is not implemented yet.
  • The "extragalactic/pointsources" component is not added to Web UI configurations yet.

fg21sim: v0.2.0

• Following major foregrounds have been implemented:
  • galactic/synchrotron
  • galactic/freefree
  • galactic/snr
  • extragalacitc/clusters
  • extragalacitc/pointsources
    (NOTE: this component needs further refactor, improvements, integration and tests)
• A Web UI build upon the Tornado framework and its WebSocket function
  is implemented and is already barely usable.
  • The Web interface is beautiful and reasonable
  • The configurations manipulation part performs quiet well
• However, there are also many problems with the Web UI:
  • The layout should be more compact and concise
  • There should be some popup/tooltip to reflect the operation results
  • The console that start the server task is current BLOCKING (i.e.,
    synchronous), however, the WebSocket currently (Tornado v4.3) does
    not support coroutine for the "on_message" method, which further
    hampers the problem been solved.