jrichardshaw

6 ms·

1.
by jrichardshaw 1y ago
The author does indeed do that via their definition of the volume equivalent sphere radius r_s.
2.
by jrichardshaw 3y ago
The same happened to the Toronto Public Library around the same time, probably coincidence rather than connected. It has made me reflect on the breadth of non-traditional public services provided by libraries. I noticed because I was lookin
3.
by jrichardshaw 3y ago
I'd definitely like to second how great peewee is. It's been a core part of running our telescope for the last 8 years. It strikes a nice balance between power and simplicity, a significant set of useful extensions and great docum
4.
by jrichardshaw 3y ago
If you happen to use `iTerm2`, then https://github.com/daleroberts/itermplot works very well. I've used it before and can recommend it pretty highly.
5.
by jrichardshaw 4y ago
I imagine you'll kick yourself for not figuring this one out. It means homepage (constructed from hejmo = home, and pago = page)
6.
by jrichardshaw 4y ago
I have bursts of progress trying to learn Esperanto, also with Duolingo. I guess the unfortunate aspect of Esperanto is that you don't meet a lot of other learners in real life so it's a bit of a solo endeavour. I give a lot of cr
7.
by jrichardshaw 4y ago
Actual research astronomer here, and as a (radio) astronomer I would love to get rid of leap seconds. Assuming that UTC = UT1 (the time measure based on Earth rotation) is not accurate enough for most calculation such that you already need
8.
by jrichardshaw 5y ago
Backing up my gmail has been on my list for a while (as step 1 of a migration away from gmail). Does anyone haver any experience with this tool, and could compare it to offline-imap ( https://github.com/OfflineIMAP/imapf
9.
by jrichardshaw 5y ago
That's a great description.
10.
by jrichardshaw 5y ago
Sounds like you moved from one nice system to another! I pretty much moved over to a 12.9" iPad Pro + Pencil when they first came out. It replaced my "system" of doing derivations on the blank side of the leftover cover pages
11.
by jrichardshaw 5y ago
I'd like to add a bit of love for the timeless classic, the Bic Cristal. Reliable and consistent, and sufficiently cheap you can have them scattered all over home and office so there's one nearby when you need it. Apparently ~5 bi
12.
by jrichardshaw 5y ago
Thanks, that's good to hear! I'll give it another look next time I look at switching things up.
13.
by jrichardshaw 5y ago
I've tried to use Zotero over the years, and I always stumble with it because it didn't have a good handling of arXiv id's. The arXiv is one of the primary way of finding papers in my field (cosmology), and I really want to s
14.
by jrichardshaw 5y ago
The GP is making a completely legitimate point here that broad sharing of large raw datasets is pretty hard, but I don't think anyone is arguing we should give up. Here's a few thoughts, though they're more directed at the ge
15.
by jrichardshaw 6y ago
Cylinders are great in a sense. As you say the efficiency is awesome, but the standing waves make life complicated! The GPU boom is causing big issues. Future projects are targeted at where we think GPUs will be in a few years, but you can
16.
by jrichardshaw 6y ago
Unfortunately cosmology and astrophysics is basically all passive measurements. Doing a controlled experiment would be more useful, but would probably remove half the fun!
17.
by jrichardshaw 6y ago
Just commenting to say that I work on this project. So let me know if anyone has any questions about it!
18.
by jrichardshaw 6y ago
I'm a big fan of pyinstrument. Many of the newer profilers, (e.g. py-spy) attach to a process externally via SYS_PTRACE and though that seems great in many ways, it is very much a no-go when you're running code on an HPC cluster a
19.
by jrichardshaw 6y ago
Oh, that's interesting. ESA says they distribute the Sentinel data free of charge as far as I can tell. So I guess the issue is that you'd need to download and host the data yourself, rather than just do an API call to someone els
20.
by jrichardshaw 6y ago
Can you use ESA Sentinel satellite imagery as an intermediate step? It's 10m ish resolution updated on a roughly weekly cadence. I use it frequently (via https://apps.sentinel-hub.com/sentinel-playground/ ) to help
21.
by jrichardshaw 6y ago
I mean, I sit around wearing headphones a lot, but that's about the closest it gets I'm afraid :)
22.
by jrichardshaw 6y ago
Yeah, that's definitely one of the main hypotheses. There aren't any other repeating FRBs known to do this yet, so how general a mechanism this is, is not known.
23.
by jrichardshaw 6y ago
There is some possibility of gravitational lensing of FRBs and people are definitely searching for it. However, in this case it is refraction caused by variation in the density of the ionised gas between us and the source (within our galaxy
24.
by jrichardshaw 6y ago
Good question. For many FRBs there is access to the original antenna time streams (which are essentially voltages samples at 800 MHz), so superficially that might give you 1.25ns resolution. However, the intrinsic width of the pulses seem t
25.
by jrichardshaw 6y ago
To be slightly fair, the policies of the journals have a lot to do with this. I'll try and explain: This paper was submitted to Nature as it would be fairly high profile, and Nature does now allow you to put in on the arXiv at submissi
26.
by jrichardshaw 6y ago
Many. I'm not super involved on the FRB side of CHIME, so I'm not 100% clear what is public and what isn't. But you can an idea from public info around the internet. I think the last total number made public was over 700 in M
27.
by jrichardshaw 6y ago
This is a good question. FRBs pose a lot of challenges for follow up because most of them are not observed to repeat (this doesn't mean they don't repeat, just that they haven't been seen to). So you see them for a few second
28.
by jrichardshaw 6y ago
That's a fair comment. I mostly think the MIT press release is pretty good and doesn't go down that route, except for the title, which is definitely hinting at it. Also agree that it would make sense to replace the link with the
29.
by jrichardshaw 6y ago
Actually looks like Shriharsh, one of the folks in the collaboration has already done it! https://www.youtube.com/watch?v=oc8FsImLUEU I guess he probably didn't talk about this because of the press embargo though.
30.
by jrichardshaw 6y ago
There's a few ways to do it (and the press release is surprisingly good and mentions most of them), but certainly one of the more obvious explanations is that the emitting object, is in a binary system with some other object, and that

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