Pooyan @pooyan.xyz · 19/10/2026This is just the side-view of the TOS-era USS Enterprise in front of the brown planet that it usually orbits when Kirk is doing his captain's log supplementing. 010 1
Pooyan @pooyan.xyz · 01/10/2026This slide was in a talk about the same optics, conveniently named the Bigger Beamsplitter. LOL! A few days ago I stumbled across the same box at LIGO Livingston and instantaneously recognized it as the one behind the random guy's pickup truck. (I was vacuum cleaning the floor. More LOL!) 010 1
Pooyan @pooyan.xyz · 04/08/2026Me whining to my bestfriend, every day: I want a girlfriend! No one ever likes me on dating apps. blah blah blah... The only content on my dating app accounts: 030 3
Pooyan @pooyan.xyz · 29/07/2026As a result of this, California DMV cancelled driving licensees of 300 thousand people a few months ago, and dared calling it only affecting a limited number of costumers. In my case, it took me months to figure out what was the issue, and I never got my California DL back. 100 1
Pooyan @pooyan.xyz · 18/07/2026My legacy here would be that I bake fresh cakes for people attending our weekly seminar-thingy. 010 1
Pooyan @pooyan.xyz · 21/06/2026I've been at the LIGO Livingston for 5 weeks now, and the experience has been mesmerizing. People are nice, and the science is mind-blowing. It's a shame that we can create such amazing public-serving facilities, with people who absolutely love to do the work, but instead use the money on wars. 110 1
Pooyan @pooyan.xyz · 01/06/2026I passed by this in the grocery store as I was listening to that episode. :) 010 1
Pooyan @pooyan.xyz · 10/05/2026My trip seems to be very Star Trek themed. I'm reading this fantastic book by @chanda.blacksky.app which is full of ST references, my water bottle has a ST sticker by @reforest-kelley.bsky.social, and I have a few episodes of ST: Discovery downloaded on my computer to watch along the way. 170 7
Pooyan @pooyan.xyz · 25/12/2025I so much feel like I'm the worst graduate student, researcher, and friend ever. So here are the comments that I got this quarter from my students. Let's hope that bragging in public about how good a teacher I am will cheer me up a little bit. 020 2
Pooyan @pooyan.xyz · 20/12/2025All of his obviously bigoted ideas aside, it's good to mention that this person was also (allegedly) involved (as a co-author) in one of the most famous research frauds of the past few years. He was the co-author of multiple papers that were retracted because of data fabrication and falsification. 110 1
Pooyan @pooyan.xyz · 29/11/2025Back to your question. Do we just vary the mirror positions to find a better configuration? Not exactly. Setting the lengths of LIGO's optical cavities (and keeping them there) is a very delicate process. See this schematic optical layout of aLIGO as an example. There are so many different --> 111 1
Pooyan @pooyan.xyz · 29/11/2025detector works, and nowadays a lot of computer simulations. See this sensitivity plot of different (proposed) detector as an example. Here, lower mean more sensitive. Our detectors are mostly limited by quantum noises nowadays. So most of what we are developing is to lower those noises. 110 1
Pooyan @pooyan.xyz · 29/11/2025Similarly, see this other plot. This one shows the astrophysical reach of Cosmic Explorer to compact binary mergers. see the alt text for more information about it. It shows the reach of Cosmic Explorer, showing its sensitivity to events that can't bee seen by LIGO due to their low amplitude. 210 2
Pooyan @pooyan.xyz · 29/11/2025with this and that frequency, amplitude, shape, and distribution. LIGO (and other ground-based Laser Interferometer detectors) are only tailored towards a narrow region of this parameter space. For example, see this frequency spectrum of different sources and detectors. 110 1
Pooyan @pooyan.xyz · 25/11/2025Apparently UC has a contract with OpnenAI to provide access to ChatGPT and "cutting-edge AI tools" on its campuses with the goal of "enhanc[ing] learning, research, and operational efficiency". I can't even read the contract because they do not deem my browser worthy of their support. 030 3
Pooyan @pooyan.xyz · 18/11/2025Remember these two? They were from the company "Astronomer". You're welcome! :) 000 0
Pooyan @pooyan.xyz · 18/11/2025Found my plan B in career paths, in case we continue the current shenanigans with destroying the whole society and the scientific infrastructure with it. 120 2
Pooyan @pooyan.xyz · 13/11/2025And of course, in case you need help, seek advice from the experts of the field. 000 0
Pooyan @pooyan.xyz · 13/11/2025And this seems to be the rest of their conversation regarding your correspondence. :) 0110 11
Pooyan @pooyan.xyz · 10/11/2025Got my copy of @mskellymhayes.bsky.social 's new book. Take a look at the list of letters. They are much needed letters of hope and solidarity from virtual friends for the current (and any other) times. 1255 25
Pooyan @pooyan.xyz · 20/10/2025HBD internet friend! No pets here, but here are stuff at my desk that include your art. 020 2
Pooyan @pooyan.xyz · 21/02/2025Hmmm, it's not the first time we are hearing this as a defense. en.wikipedia.org/wiki/Superio... 020 2
Pooyan @pooyan.xyz · 25/12/2024Here is a picture of what I printed, featuring art by @asleepywanderer.bsky.social and @kajunut.bsky.social . 331 3
Pooyan @pooyan.xyz · 23/11/2024If you're looking for a genius, here is the greatest physicist of all times. vixra.org/author/alire... 001 1