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#binary

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Free workshop: ph0wn Labs #3

Nicolas Rouvière, of Ph0wn and SHL, will show you how to use Qiling in practice, for dynamic binary emulation.

Don't miss it! This is on-site only, at SHL, on June 19 at 7pm.

Venue:
Sophia Hack Lab
2323 Chem. de Saint-Bernard
Space Antipolis Batiment 9
06220 Vallauris - Sophia Antipolis, France

linkedin.com/feed/update/urn:l

In 2024, Nicolas used Qiling to solve the Ph0wn CTF teaser. See how here:

github.com/ph0wn/writeups/blob

Enhanced magnetic activity in rapidly rotating #binary stars: arxiv.org/abs/2505.19967 -> Pairs of stars that orbit each other exhibit unexpected magnetic activity: science.anu.edu.au/news-events

arXiv.orgEnhanced magnetic activity in rapidly rotating binary starsStellar activity is fundamental to stellar evolution and the formation and habitability of exoplanets. The interaction between convective motions and rotation in cool stars results in a dynamo process that drives magnetic surface activity. In single stars, activity increases with rotation rate until it saturates for stars with rotation periods Prot < 3 - 10 d. However, the mechanism responsible for saturation remains unclear. Observations indicate that red giants in binary systems that are in spin-orbit resonance exhibit stronger chromospheric activity than single stars with similar rotation rates, suggesting that tidal flows can influence surface activity. Here, we investigate the chromospheric activity of main-sequence binary stars to understand the impact of tidal forces on saturation phenomena. For binaries with 0.5 < Prot/d < 1, mainly contact binaries that share a common thermal envelope, we find enhanced activity rather than saturation. This result supports theoretical predictions that a large-scale $α$ - $ω$ dynamo during common-envelope evolution can generate strong magnetic fields. We also observe supersaturation in chromospheric activity, a phenomenon tentatively noted previously in coronal activity, where activity levels fall below saturation and decrease with shorter rotation periods. Our findings emphasise the importance of studying stellar activity in stars with extreme properties compared to the Sun's.

A very simple code to describe emotions or how does this work in real life?!?? ;)

```rust
#[allow(warnings)]
fn main() {
let mut emo: &str;
match 1 + 1 == 0b10 {
true => emo = "🤓",
_ => emo = "😵‍💫",
};
println!("Perception: {}", emo);
}
```

Play 🦀: play.rust-lang.org/?version=st

play.rust-lang.orgRust PlaygroundA browser interface to the Rust compiler to experiment with the language
#digital#math#binary

HDD SSD space should be counted in binary.

1KB in binary is 1024.

A 32 TB hard drive is in fact 30.517578125 TB unpartitioned /unformatted capacity, as the binary system on the computer actually uses it

I know about all those confusing terms that you can find when you go and search on different engines; those are just to confuse and convolute the fact that drives sold are under capacity

Counting storage in decimals is a crime, a marketing scheme which should have been outlawed globally.

#FileSystems#HDD#SSD

Very much liking the succinctness of the JS Compression Streams API[1] and wish I'd known about this a couple of years earlier. Here're some small helpers to compress or decompress a byte array...

I've just also pushed a new version of thi.ng/genart-api (v0.11.0) in which the reference implementation platform adapter now uses gzip compression for serializing the data of image maps/parameters (in ~50-60% of the original size)...

[1] developer.mozilla.org/en-US/do

(edit: removed obsolete `async`)