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ethrane / transients

Discussion for the Time Domain and Multi-Messenger Astrophysics Group (1.3)
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What is the nature of dark matter? #8

Open cwjames1983 opened 4 months ago

cwjames1983 commented 4 months ago

[I'm raising this because it's clearly a huge issue, and I'm not 100% sure if it's going to be covered. Is anybody on "Galaxies" here?]

Dark matter consists of 25% of the Universe, gets studied a lot by multimessenger experiments (gamma rays at GeV and TeV and neutrinos). It's a topic for significant infrastructure investment.

SimonStevenson commented 4 months ago

Dark matter is certainly very important, but I'm not sure this group is the right place for it.

cwjames1983 commented 4 months ago

Dark matter is certainly very important, but I'm not sure this group is the right place for it.

It's the multimessenger group, and it's multimessenger physics. I do agree that there is much more "transients" in Australia than there is "multimessenger", hence I fully understand why its priority would be lower though.

anaismoller commented 4 months ago

Both dark matter and dark energy are linked to transients and multi-messenger as probes. What would be the difference between our question and the cosmology group?

ethrane commented 4 months ago

I agree with @anaismoller. I think dark matter and dark energy are (hugely) important, and I think transients can play a role, but Group 1.1 (Galaxies & Cosmology) is sure to focus on dark matter and dark energy. My advice is for us to work with them to make sure that transients are part of their key question. However, I prefer to use our report to highlight science priorities that are more unambiguously in the transient wheelhouse.

cwjames1983 commented 4 months ago

@ethrane I think we should then ensure we do contact that group before drawing any conclusions. After all, why would they not say that multimessenger dark matter searches are part of the multimessenger group?

cwjames1983 commented 4 months ago

@ethrane message sent to Scott Croom, head of the cosmology group (which I'm on, with an FRB hat on). Let's see the response.