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Hey everyone! I juggle roles being a Postdoc at MISU (Stockholm University), research software developer, blogger and a person. Scientifically, I am trained in , fresh out of PhD a few months ago. I study geophysical flows and turbulence.

I also maintain a:
- Personal alt: @ashwinvis
- Website:


The power law of the main sequence reminds me of Kolmogorov's law in fluid dynamics where energy density (very much like luminosity) relates to wavenumber (like color).

E ~ k^{-5/3}

In fluid dynamics, we treat fluids as abstract media that we can bend and mould to our desire. Such power laws make me wonder if the universe is a fluid in the lab of super-dimensional being, and we are like the people living in a tiny speck. Think "Horton hears a Who!".

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Hertzsprung–Russell diagram plots the luminosity of a against its color index.The diagram was created independently in around 1910 by Ejnar Hertzsprung and Henry Norris Russell, and represented a major step towards an understanding of stellar evolution.

I ended up here after watching the fascinating video on star sizes.

Happy birthday to Bilbo and Frodo Baggins! On this day in 1401 S.R., Bilbo disappears at his "long-expected" 111th birthday party. 17 years later (1418 S.R.), Frodo is turning 50, and about to leave Bag End on a journey to destroy the Ring.

Jair Bolsonaro of Brazil,
Boris Johnson of the United Kingdom,
Narendra Modi of India,
Andrés Manuel López Obrador of Mexico,
Alexander Lukashenko of Belarus,
Donald Trump of the USA,
Recep Tayyip Erdogan of Turkey,
Vladimir Putin of Russia,
Gurbanguly Berdimuhamedow of Turkmenistan,

for using the Covid-19 viral pandemic to teach the world that politicians can have a more immediate effect on life and death than scientists and doctors can.

😥 #ignobel

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Happy Free Software Day!

I'm accidentally celebrating by just learning about all the cool organizations and people working on free software in India. As in, I learned about FSFI first, and then I pulled on further threads from there and found more orgs, and then I discovered on their news pages that today is FSD. 😀

FSF India @fsfi

Swathanthra Malayalam Computing @smc

Software Freedom Law Center, India @sflcin

Free Software Community of India

The FSCI don't seem to have an official account on Fedi or Diaspora, but I'm now following some individuals mentioned on their website, by just searching for their usernames on Fedi and Diaspora.
Free Software Community of India

Researchers have found iron oxide (i.e. rust) on the moon! This is using data from the Indian space agency's Chandrayaan-1 probe in 2008.

Rust is very surprising, because it should require oxygen to form! The theory is that once a month, the moon passes through the tail of Earth's magnetosphere, and trace amounts of oxygen ions are carried there by the magnetic field.

my coworker's husband contributed to this research!

This year's IgNobel Prize has this very apt prize for #COVID19 . It's awarded to the leaders of the US, UK, India, etc. "for using the COVID-19 viral pandemic to teach the world that politicians can have a more immediate effect on life and death than scientists and doctors can."

#IgNobel #Science #Humour


This podcast episode covers it in detail.

Science Friday: Medium Black Holes, World of Wonders, Warsaw Typhus. Sept 11, 2020, Part 2

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In addition to harnessing the power of social media to spread news of our work, we can better communicate to the general public what we have done and why it matters...

A significance statement is not supposed to be a plain-language repeat of the abstract. The statements must answer without jargon:

1) The purpose of the work
2) Key findings, and why do they matter?
3) What follow-up science is suggested (optional)?


An intermediate sized black-hole.

BHs of mass 10^2–10^5  M⊙, more massive than stellar mass BHs and lighter than supermassive BHs (SMBHs), are traditionally designated IMBHs. A conclusive observation of these objects has thus far remained elusive, despite indirect evidence.

GW190521: A Binary Black Hole Merger with a Total Mass of 150  M⊙ (solar mass).

P.S.: The paper has two software citations, inc. 😄

@ashwinvis this is very difficult to communicate to the general (deterministic) audience 🌩️

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