Getting Started with Athena++ for Magnetar Simulations

[tplott4]

Hi everyone,

I'm a researcher at Phenikaa University working in the field of gravitational-wave data analysis, particularly with ground-based detectors.

We're currently exploring the use of Athena++ to simulate magnetars, with the goal of building on the work by Ankan Sur et al. (2021) to create a gravitational-wave catalog informed by GRMHD simulations.

Given how crucial the input file configuration is to running Athena++ simulations effectively, I'm reaching out to ask if anyone has experience or suggestions for setting up an initial input file suitable for simulating the dynamics of a magnetized, spinning neutron star. Any tips, examples, or starting points would be greatly appreciated.

If anyone is open to discussing this further (perhaps over a Zoom call), I’d be happy to coordinate a time that works for you.

Thanks in advance for your help!

Best,
Peter

[msbc]

I in collaboration with Todd Thompson's group have been doing non-relativistic PNS spindown simulations. See https://ui.adsabs.harvard.edu/search/fq=%7B!type%3Daqp%20v%3D%24fq_database%7D&fq_database=(database%3Aastronomy%20OR%20database%3Aphysics)&q=author%3A%22thompson%2C%20t%22%20author%3A%22%20Coleman%2C%20m%22&sort=date%20desc%2C%20bibcode%20desc&p_=0

The primary reason that we haven't gone relativistic yet is there is no support for the general EOS module in GR. I am the author of the EOS module, and I'm no longer a full time researcher; I'm now part of the HPC team at Princeton University (but I still get time for research).

I'm only willing to share code/input files with my collaborators okay. But that discussion can be started after I get back from vacation.

[tplott4]

Thanks for sharing the link—your work with Thompson’s group seems interesting. I understand the constraints around the EOS module and your current priorities.

Appreciate your being upfront about code sharing. The project is moving ahead on our timeline, but happy to revisit the discussion after your vacation to see if collaboration makes sense.

Enjoy the time off.

[kyriakosTapinou]

@tplott4 I am interested in getting into similar simulations. Have you made any progress you are happy to share?