Mark Avara

Astrophysicist at Institute of Astronomy, Cambridge. Composing solutions to cosmic conundrums.

[cats being weird little guys 👅 @weirdlilguys]

feed the black hole

[ARCHIVED - Dr. Nicky Fox @NASAScienceAA]

We’ve selected a new @NASAUniverse mission! UVEX — UltraViolet Explorer — will conduct a deep survey of the whole sky in two bands of ultraviolet light, providing new insights into galaxy evolution and the lifecycles of stars. Congratulations to Principal Investigator, Fiona Harrison and her team! https://t.co/H9nNIb37rV

[NASA @NASA]

July 2023 was the hottest month on record, according to our global temperature analysis. Overall, July was 0.43°F (0.24°C) warmer than any other July in @NASAEarth's record, and it's likely due to human activity. Details: https://t.co/2DTIfL8S1Q

[Mark Avara @CosmicWandering]

@DrDa5id Any luck finding the video of the levitated sample in the companion paper?

[Professor Mark Maslin 👋 𝕏 @ProfMarkMaslin]

Climate change: how bad could the future be if we do nothing?

I developed this table of impacts for my book 📕 ‘Climate Change: A Very Short Introduction’ based on the @IPCC_CH 2018, 2019, 2021 and 2022 reports

Beyond 1.5°C #ClimateChange impacts gets worse and worse

[Janna Levin @JannaLevin]

Pulsars are all over the news, powerhouse astronomical magnets a million trillion times the magnitude of the Earth’s. Dame Jocelyn Bell Burnell describes their discovery in this animated Broadcast Monologue @PioneerWorks_ https://t.co/o5SqRICpVR

[scott noble @therealscn]

These kinds of simulations will help us find PTA sources with light (some our team: @JoaquinPelle
@ManuelaCampane1
@CombiLuc
@egutierrezposse
@CosmicWandering
@Onihei114 )

https://t.co/y6hTYZMZMk

[Mark Avara @CosmicWandering]

And also, of course, the other amazing international pulsar timing array experiments, @IPTA_GW and its members.

[Mark Avara @CosmicWandering]

Thrilling results from @NANOGrav! Detection of the stochastic background of #GravitationalWaves, probably binaries of supermassive #BlackHoles. Colleagues @RIT_CCRG, @NASA @JohnsHopkins, @Cambridge_Uni, and I have been exploring what light waves they emit! https://t.co/4AOELKhXs6

[NASA @NASA]

Congratulations to NANOGrav for detecting evidence that gravitational waves fill the cosmos.

These ripples in the fabric of space happen when massive objects like black holes circle one another before colliding. The result brings us closer to understanding how galaxies evolve. https://t.co/AKZhOS5qwe

[Natalie Wolchover @nattyover]

Nice short video here explaining how pulsar timing arrays are used to detect gravitational waves. Helps you understand the @NANOGrav experiment that’s announcing results on Thursday. By @savagitsky, @mclean_ka & @Nnguyenscience for @ScienceMagazine: https://t.co/GNDXUEPW2T

[Mark Avara @CosmicWandering]

Here's a video I made a while back showing one of our longest 3D-GRMHD simulations of the circum-binary disk we use to understand the state of the matter surrounding merging binary black holes: https://t.co/27Cs1c9zeP

[Mark Avara @CosmicWandering]

What happens when merging binary black holes have matter falling ('accreting') onto them? Check out our recent paper showing some of the most cutting-edge 3D MHD simulations of these systems! https://t.co/iLQxRBywpS https://t.co/4AOELKhXs6 with
@ManuelaCampane1
and collaborators

[Mark Avara @CosmicWandering]

Meanwhile, the binary black holes (most likely supermassive if matter surrounding them is falling onto them at significant rates, meaning black holes millions to billions times the mass of our Sun) will emit stronger and increasing-frequency gravitational waves until merging!

[Max Tegmark @tegmark]

Let's not just focus on whether #GPT4 will do more harm or good on the job market, but also on whether its coding skills will hasten the arrival of #superintelligence – for which AI safety researchers have so far failed to discover any safety guarantees: https://t.co/D051i53B2d

[Phys.org @physorg_com]

#Astronomers sound alarm about #lightpollution from satellites @NatureAstronomy @nature https://t.co/DJ87DdL7TM https://t.co/yhzofNAWqn

[Mark Avara @CosmicWandering]

@callumbruce91 For such things, I keep running into it not completing code....it just stalls. Asking too much, maybe?

[Natalie Wolchover @nattyover]

I’m thrilled to announce a new, weeklong workshop for aspiring & early-career science journalists happening July 10-15 at the Institute for Advanced Study in Princeton. Travel costs, meals, lodging covered by @SimonsFdn & @the_IAS. Apply here: https://t.co/hiMQpYtKav Pls share🙏

[Mark Avara @CosmicWandering]

@rgoulston @MBTA No kidding. #crumblinginfrastructure