Pulsars database update (DOWNLOAD LINK)

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Cham M
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Cham M
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#1by Cham » 13.08.2007, 06:01

Maybe it's time that I publish an update I made this summer to Celestia's pulsars database (so, the addon sector is still alive even if Celestia's development is dying).

I used the latest ATNF pulsars catalogue (version 1.30) and made a complete up-to-date addon for Celestia 1.5. It contains more than 1750 pulsars (see the readme file coming with the addon), and some scripts to study the spatial distribution of the known pulsars in the Milky Way. It's also including 7 well known pulsar binaries, properly oriented relative to Earth (references are given in the binaries SSC file).

I worked hard on the database to identify all the duplicates (there are a few pulsars in the ATNF database which are actually the same object, with different names) and all pulsars having a very inaccurate or unreliable distance. A few pulsars in the ATNF database are even lacking some data, so I had to take care of them. Take note that I used a SpectralType "D" for all the pulsars having an unreliable or unknown distance, so we can identify them easily using a script.

The addon contains some simple generic models to render the pulsars with jets. If you don't like the models, just throw away the associated SSC files. As a complement, I'm also giving a second link to a "sub-addon", which adds a magnetic field configuration to some well-known pulsars. Please, read the accompany readme file. Of course, the magnetic sub-addon is optional. If you don't like the magnetic fields models, you know what to do.

http://nho.ohn.free.fr/celestia/Cham/ATNF_pulsars.zip (7.9 MB zip file)

http://nho.ohn.free.fr/celestia/Cham/pu ... _field.zip (44.8 MB zip file)

Comments are welcome here.

EDIT : Some previews from the addon.

The generic model used for almost all pulsars :
Image

Image

One of the scripts in action, showing the population of pulsars with markers :
Image

A generic model used for a few of the pulsars, with a generic dipolar field (from the "magnetic" sub-addon) :
Image

One of the models showing the true relativistic magnetic field of a rotating dipole :
Image

One of the paths of a relativistic charged particle moving in a magnetic field, with effects from the induced electric field (while negligible on this path, gravitation and rotating frame effects - Coriolis and centrifugal forces - are also included) :
Image
Last edited by Cham on 15.10.2007, 10:15, edited 2 times in total.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

selden
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#2by selden » 13.08.2007, 11:59

Cham,

The addon looks great!

The documentation directory needs some documentation, however. :)

"webloc" files are unknown to Windows.

If they're supposed to be URLs, I think they should be put into an HTML file which explains what they are. "Mystery links" are generally considered to be inappropriate since there's no way to know what they might do.

Also, a brief description of the .au files and credit for their sources would be good, too.

Thanks!
Selden

ElChristou
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#3by ElChristou » 13.08.2007, 12:02

Tx for the effort!
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Cham M
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#4by Cham » 13.08.2007, 15:36

You may prefer to trash the 5 useless files located in the "documentation" folder and replace them with a small text file instead, with this content :

Code: Select all

The ATNF catalogue is located there :

http://www.atnf.csiro.au/research/pulsar/psrcat/



Here are three URLs about PSR J0737-3039 :

http://www.jb.man.ac.uk/news/doublepulsar/

http://www.atnf.csiro.au/news/newsletter/feb04/page1.html

http://www.atnf.csiro.au/news/press/double_pulsar/



There's a list of several pulsar binaries on this page :

http://www.johnstonsarchive.net/relativity/binpulstable.html



The four pulsar sound files given in this folder are coming from this site :

http://www.jb.man.ac.uk/~pulsar/Education/Sounds/sounds.html


Right now, I'm not motivated enough to build a full documentation folder. I'm just giving some links to usefull web pages and some real pulsar sounds.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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#5by LordFerret » 14.08.2007, 04:53

Sounds very much like excellent work Cham!, although I can't view it (yet) because I'm still using v1.4.1. :(

Since Celestia's development is apparently totally dead, this may very well be my last addon contribution to Celestia.

...and that would be sad, very sad. I do hope this is not the case.

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Re: Pulsars database update (DOWNLOAD LINK)

#6by Dollan » 14.08.2007, 14:51

Cham wrote:... this may very well be my last addon contribution to Celestia. :x


Interested in a work on comission?

...John...
"To make an apple pie from scratch, you must first create the universe..."
--Carl Sagan

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Re: Pulsars database update (DOWNLOAD LINK)

#7by Fenerit » 14.08.2007, 16:57

Cham wrote: Since Celestia's development is apparently totally dead, this may very well be my last addon contribution to Celestia. :x


Celestia's development dead whether people like you abandon us. Don't do it, wait another tad. :wink:
Never at rest.
Massimo

BobHegwood
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#8by BobHegwood » 23.10.2007, 15:21

Martin,

Just wanted you to know how BEAUTIFUL all of your Black Hole add-ons
are on my new machine. My new monitor is approximately 20" x 12" and
man are they pretty here.

Thanks VERY much for the add-ons, but one quick question:

It seems that I cannot unpack the ATNF add-on because of duplicate -
or too lengthy - filenames on my Vista machine. Does this occur to anyone
else using Windows? Just thought I'd mention it, but I can get the pieces
by opening them up individually via Vista's un-zipping utility.

Take care, Bob
Brain-Dead Geezer Bob is now using...
Windows Vista Home Premium, 64-bit on a
Gateway Pentium Dual-Core CPU E5200, 2.5GHz
7 GB RAM, 500 GB hard disk, Nvidia GeForce 7100
Nvidia nForce 630i, 1680x1050 screen, Latest SVN

Cham M
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#9by Cham » 23.10.2007, 15:41

Bob,

the problem is OS X is actually storing all Mac-related info into the zip file (usefull for the Mac guys). So when a Windows user is unpacking the zip file, he gets some duplicates. You can safely trash one of them and use the other. Just check that you have all the files in one addon folder : STC and SSC files, textures and models folder, and also a "documentation" folder, with all the models and textures files properly placed in their folders.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

BobHegwood
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#10by BobHegwood » 23.10.2007, 17:53

Cham wrote:Bob,

the problem is OS X is actually storing all Mac-related info into the zip file (usefull for the Mac guys). So when a Windows user is unpacking the zip file, he gets some duplicates. You can safely trash one of them and use the other. Just check that you have all the files in one addon folder : STC and SSC files, textures and models folder, and also a "documentation" folder, with all the models and textures files properly placed in their folders.


Ah... If ONLY it were that easy.

Remember, I'm using Vista, and you can FORGET anything that makes
sense in Vista. If I tell the unpacker to "Skip" duplicate files, it creates
your folders with NOTHING installed in them.

Not to worry though, I can get to each individual file within the zip file,
and then edit the contents via programs like Irfanview, or Notepad.
Then, I can simply save the contents outside of the zip folder. THIS is
one of the things that Vista did right!!!

Appreciate the add-ons, whatever state they're in. Cooool stuff my
friend.
Brain-Dead Geezer Bob is now using...
Windows Vista Home Premium, 64-bit on a
Gateway Pentium Dual-Core CPU E5200, 2.5GHz
7 GB RAM, 500 GB hard disk, Nvidia GeForce 7100
Nvidia nForce 630i, 1680x1050 screen, Latest SVN

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#11by Reiko » 24.10.2007, 21:59

Very nice! :)

BobHegwood
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Re: Pulsars database update (DOWNLOAD LINK)

#12by BobHegwood » 03.01.2009, 06:33

Martin,

Just thought I'd let you know that I have downloaded all of your add-ons once again for my new Gateway.
This time around, these pulsars are relatively easy to install. Many thanks once again.

Also, just in case you are wondering, I have been downloading and adding your Pulsars, Nebulae and
Black Holes all day and all night. :wink: This is fun... :D

Thanks again for all of your great add-ons.
Take care, Brain-Dead
Brain-Dead Geezer Bob is now using...
Windows Vista Home Premium, 64-bit on a
Gateway Pentium Dual-Core CPU E5200, 2.5GHz
7 GB RAM, 500 GB hard disk, Nvidia GeForce 7100
Nvidia nForce 630i, 1680x1050 screen, Latest SVN

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Re: Pulsars database update (DOWNLOAD LINK)

#13by jogad » 03.01.2009, 13:26

Cham wrote:Hum !
grrr.jpg


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