Radio Waves: Polish Trains Radio Hacked, Flawed Code, Radio Quiet Boxes, and EAS Reminder

https://swling.com/blog/2023/09/radio-waves-polish-trains-radio-hacked-flawed-code-radio-quiet-boxes-and-eas-reminder/

#EAS #RadioAstronomy #RadioQuietBox #RadioWorld

Gizmodo: Perplexing Pulsar ‘Switching’ Behavior Finally Deciphered by Astronomers https://gizmodo.com/astronomy-pulsars-switching-modes-mystery-decoded-1850787441?utm_source=regular #northamericannanohertzobservatoryforgravitationalwaves #gravitationalwaveastronomy #mariacristinabaglio #technologyinternet #gravitationalwave #generalrelativity #millisecondpulsar #radioastronomy #cotizelati #startypes #pulsar

Aussie friends!

📺 Tune into ABC Catalyst tonight (8:30pm) to check out our team and story on converting data from
Space into sounds (sonification) in Astronomy.

That’s my boss (the awesome Dr George Hobbs) riding on our beautiful Murriyang (Parkes radio telescope).

A while back I wrote a piece for #SpaceAustralia on the importance of sonification, in particular, to make Astronomy more accessible and inclusive to extended audiences. It's an excellent topic of science but requires a lot of ableism (vision) to mostly participate in.

But sonification can help change this - as human audio capability is amazing!

Read more about this here: https://www.spaceaustralia.com/index.php/news/listening-astronomical-data

and don't forget to tune in tonight on ABC!

📸 ABC Catalyst / CSIRO

#Astrodon #Astronomy #Sonification #Inclusivity #RadioAstronomy #Data

New tee arrived yesterday and it merges together two excellent pop culture pieces with some beautiful science.

I call it: ‘The Gravitational Wave Background’
🌊📡〰️〰️〰️🔵

Can’t wait to wear this in summer just so I can talk about the GWB to randoms.

Here’s also some words I wrote about the GWB on #SpaceAustralia pre the big announcements made at end of June.

https://www.spaceaustralia.com/feature/universes-roaring-low-frequency-gravitational-wave-background

#Astrodon #RadioAstronomy #Pulsars

HAPPENING TONIGHT! 8pm AEST

I’ll be giving an online talk about my fav and all-round weirdo space objects - pulsars! All ages welcome and will feature some basics along with some sciencey content + a little bit about my current research.

Thanks to the Astro. Society of Victoria for this opportunity!

Event requires rego but is free. Broadcast on YouTube/FB/Twitch. Please come along if you’re free.

https://www.youtube.com/live/-1xqgSxhj3Q?feature=share

#Astrodon #Pulsars #RadioAstronomy

Forgot to share this here, but 6 August is the anniversary of the discover of #Pulsars by Dame Professor Jocelyn Bell Burnell.

She was looking through the roll of data from the telescope she helped build and noticed a little bit of ‘scruff’.

Her discovery changed our understanding of the Universe but sadly her male supervisor took credit and got the Nobel prize for it!

Read more: https://www.spaceaustralia.com/feature/55-years-pulsar-science

#Astrodon #RadioAstronomy #SpaceAustralia

Another great ALMA image: a group of researchers led by ProfessorXX studied the triple system IRAS 04239+2436 on the radio signals of sulfur monoxide (SO) and studied the arms generated in that kind of interaction, and compared them with simulations, and the agreement was fantastic.

More info at https://www.almaobservatory.org/en/press-releases/triple-star-birth-unraveling-the-mystery-with-alma/

#RadioAstronomy #StarFormation #TripleSystems #ALMA #ALMAObservatory #NumericalSimulations

A real fascinating story of how an 81-year-old former Air Force chap had come forward to announce he saw pulsars well before they were discovered but could not talk about it for half a century until the military instruments he observed them with were decommissioned and de-classified.

In a nutshell, he was using radar for a Ballistic Missile early warning system and noticed a pulsating signal showing up in his data, which was rising 4 mins earlier each day. He asked astronomers after writing down the location, and it was the Crab Pulsar!

The woman who discovered pulsars, Dame Prof. Jocelyn Bell Burnell - agreed with his discoveries.

https://www.nature.com/articles/448974a

Sent this to our team's slack channel overnight, and my supervisor told me he and another one of our team's astronomers were the folks that the Air Force chap got in touch with!

Small world, and a nice Aussie connection!

https://pubs.aip.org/aip/acp/article-abstract/983/1/642/620966/An-Independent-1967-Discovery-of-Pulsars?redirectedFrom=PDF

#Astrodon #RadioAstronomy #Pulsars #Defence #Science

This is a worrying development: the impact of large satellite constellations, and of multiple ones of them will be strongly felt by radio astronomy…

https://www.orp-h2020.eu/observations-confirm-unintended-electromagnetic-radiation-emitting-large-satellite-constellations

#RadioAstronomy #LargeSatelliteConstelations #SatelliteRFI #RFI #RadioFrequencyInterference

#RadioAstronomy
"Radio waves leaking from large satellite constellations could jeopardize astronomical exploration"

🔗 https://www.astron.nl/radio-waves-leaking-from-large-satellite-constellations-could-jeopardize-astronomical-exploration/

The power of multiwavelength astronomy in action: A research group led by Philipp Weber of the Universidad de Santiago de Chile (USACH) and Millennium Nucleus on Young Exoplanets and their Moons (YEMS) used ALMA to check on a young star, V960 Mon. Beyond the dust detectable with SPHERE, ALMA showed spiral arms of gas that are fragmenting, and have masses that can be progenitors of future giant planets.

#ALMA #AlmaObservatory #SPHERE #PlanetFormation #RadioAstronomy #VLT

https://www.almaobservatory.org/en/press-releases/star-birth-spectacle-unveiled-from-chile/

@vlrny you can get a lot of interesting people following astronomy related hashtags:

#Astronomy #AstroPhotography #AstroPhysics #RadioAstronomy #Hubble #HST #ALMA #AlmaObservatory #JWST

and many others!

Gizmodo: A Mysterious Object in Deep Space Has Blinked Every 22 Minutes for Over 30 Years https://gizmodo.com/mysterious-space-object-magnetar-radio-waves-1850660319 #internationalcentreforradioastronomyresearch #astronomicalinterferometer #murchisonwidefieldarray #natashahurleywalker #radiotelescopes #radioastronomy #fastradioburst #neutronstar #startypes #magnetar

"The Parkes radio telescope Murriyang, which helped broadcast the moon landing in 1969, has played a central role in another scientific discovery.

CSIRO scientists working at Murriyang have been observing an array of nano hertz frequency pulsars for almost 20 years. They are ripples in space time [gravitational waves] that are nearly the same size as the Milky Way.

The longevity of the experiment is due to the waves being years or even decades in length." #science #astrophysics #physics #astronomy #RadioAstronomy #RadioTelescope #Australia #Parkes #Murriyang ##GravitationalWaves #MilkyWay #pulsars #telescope #CSIRO

Parkes telescope finds evidence of gravitational waves, unlocking ‘a new window into the universe’ | Rural Australia | The Guardian https://www.theguardian.com/australia-news/2023/jul/12/parkes-radio-telescope-gravitational-waves-evidence-murriyang

#ReinadelCid dropping mad sci-rhymes! https://www.youtube.com/shorts/8J0Rnzi848I

#HipHop #Rap #spacepoetry #NewMusic #RadioAstronomy #Astrophysics #Pulsars #PulsarTiming #GravitationalWaves

Yesterday I gave my first PhD talk at the Astronomical Society of Australia’s Annual Science Meeting on my fav millisecond pulsar - PSR J1713+0747.

The pulsar that threw a tantrum!

Millisecond pulsars are used in pulsar timing arrays as they’re considered stable rotators over the long term. That is vote to helping us search for gravitational wave backgrounds - the big news that we announced last week.

But this very well know millisecond pulsar decided to undergo a massive magnetospheric reconfiguration in 2021 - only the second millisecond pulsar that we know off to exhibit this strange behavior!

In my PhD I will be exploring to see why this happened and if other millisecond pulsars might be doing this on a smaller scale. Maybe they’re not so stable after all … ask me again in three years!

#Astrodon #RadioAstronomy #Astrophysics #Pulsars #PulsarTiming #GravitationalWaves

New results show detections of radio energy between 110 and 188 MHz from 47 out of the 68 #Starlink #satellites observed with the Low Frequency Array (LOFAR) telescope in the Netherlands. This frequency range includes a protected band between 150.05 and 153 MHz specifically allocated to #RadioAstronomy.

https://cps.iau.org/news/new-radio-astronomical-observations-confirm-unintended-electromagnetic-radiation-emanating-from-large-satellite-constellations/

#Astronomy #RFI

This looks interesting

https://www.newscientist.com/tours/mysteries-universe-jodrell

But it's just shy of £1k for a weekend. That seems expensive to me. What do you reckon?

@leo #TWiS #TWIThosts #astronomy #radioastronomy #science #lectures

The LNA I mentioned in my previous post, well it’s a #Nooelec sawbird H-Line amplifier. About 41dB gain, centered around 1420MHz.

Look promising indeed 🙂

#radio #radioastronomy #RadioTelescope #rfengineering #rfengineer #hamr #hamradio

My living room as an antenna test chamber 😂 Well, it was a rainy day, couldn’t set it up outside.

I’m testing a 2.4GHz dish, meant for WiFi links, but as it turns out, it has a decent match at 1420MHz so it’s actually usable as a Hydrogen Line radio telescope antenna.

Traversing in front of it, you can see its impedance (S11 for the experts) change. This happens because I’m affecting its near field. In human understandable terms: being sufficiently close to the antenna affects how it performs.

With my newly acquired LNA, this will likely end up being a much more portable Hydrogen Line radio telescope, I have high expectations 😃

#hamr #hamradio #radio #radioastronomy #rfengineering #rfengineer #electronics #nanoVNA