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Martin Bauer

@martinmbauer • 104,267 subscribers

Working on particle physics, quantum sensors, dark matter. Associate Prof at @IPPP_Durham @durham_uni, FLF @UKRI_News, Science board member @STFC_Matters

Shorts

Velocity distribution of stars in a galaxy Left : expected assuming only visible matter using GR/Newtons law Right: observed Something makes stars far from the centre move much faster then expected 🤔

Velocity distribution of stars in a galaxy Left : expected assuming only visible matter using GR/Newtons law Right: observed Something makes stars far from the centre move much faster then expected 🤔

417,435 просмотров

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The most energetic neutrino ever observed just smashed into the Mediterranean and left a signal that was picked up by the K3Mnet neutrino telescope 2400m under the sea At the moment we don't really know where this neutrino came from, nor should it really be there. 🧵1/10

The most energetic neutrino ever observed just smashed into the Mediterranean and left a signal that was picked up by the K3Mnet neutrino telescope 2400m under the sea At the moment we don't really know where this neutrino came from, nor should it really be there. 🧵1/10

525,871 просмотров • 1 год назад

DESI has made the largest 3D map of our Universe to date Earth is at the center in this animation, each blue point is a galaxy: > 14 million galaxies in total up to 11 billion light years away The gaps are the regions where our own galaxy blocks the view

DESI has made the largest 3D map of our Universe to date Earth is at the center in this animation, each blue point is a galaxy: > 14 million galaxies in total up to 11 billion light years away The gaps are the regions where our own galaxy blocks the view

154,547 просмотров • 1 год назад

Christopher Hitchens gave a great defence of 'Awe' in Science He died 14 years ago today "Those of us who do not believe that we are divinely created, let alone divinely supervised are not immune to the idea of awe and beauty and the transcendent"

Christopher Hitchens gave a great defence of 'Awe' in Science He died 14 years ago today "Those of us who do not believe that we are divinely created, let alone divinely supervised are not immune to the idea of awe and beauty and the transcendent"

32,681 просмотров • 6 месяцев назад

Quantum field theory predicts that light can scatter off light, an effect beyond classical electrodynamics. Maxwells equations are linear such that two photons never interact with each other However, in reality, if you cross two light beams photons will scatter if they're energetic enough. Even in vacuum, the photons interact with the ever-present quantum fields of charged particles, like electrons, even when no actual charged particles are present But you need very high energies to see this. Thankfully we built a machine specifically to probe nature at very high energies. At the LHC, this rare process of light-by-light scattering has been observed Hidden among millions of photons lighting up the detector, physicists were able to identify 26 distinct light-by-light scattering events This CMS graphic shows how they found them:

Quantum field theory predicts that light can scatter off light, an effect beyond classical electrodynamics. Maxwells equations are linear such that two photons never interact with each other However, in reality, if you cross two light beams photons will scatter if they're energetic enough. Even in vacuum, the photons interact with the ever-present quantum fields of charged particles, like electrons, even when no actual charged particles are present But you need very high energies to see this. Thankfully we built a machine specifically to probe nature at very high energies. At the LHC, this rare process of light-by-light scattering has been observed Hidden among millions of photons lighting up the detector, physicists were able to identify 26 distinct light-by-light scattering events This CMS graphic shows how they found them:

60,227 просмотров • 1 год назад

All supernovas ever observed, tens of thousands of dying stars Once the Rubin Observatory is completed it will be able to see several millions of supernovas, dwarfing what we've seen so far This is from a brilliant website by Isaac Shivvers

All supernovas ever observed, tens of thousands of dying stars Once the Rubin Observatory is completed it will be able to see several millions of supernovas, dwarfing what we've seen so far This is from a brilliant website by Isaac Shivvers

41,624 просмотров • 1 год назад

George R Martin and the physicist Ian Tregillis have published a paper where they construct a Lagrangian that can model the spread of the wild card virus Goes to show both the power of the variational principle and how creative G.R.Martin has become in avoiding to finish writing winds of winter

George R Martin and the physicist Ian Tregillis have published a paper where they construct a Lagrangian that can model the spread of the wild card virus Goes to show both the power of the variational principle and how creative G.R.Martin has become in avoiding to finish writing winds of winter

39,826 просмотров • 1 год назад

Do you want to see what it'd look like to fly through the DESI Survey map of the Universe? Our Universe is absolutely huge. Each dot here is a galaxy with hundreds of billions of stars.

Do you want to see what it'd look like to fly through the DESI Survey map of the Universe? Our Universe is absolutely huge. Each dot here is a galaxy with hundreds of billions of stars.

32,638 просмотров • 1 год назад

Gravitational wave frequency depends on black hole mass and orbit. LIGO detects signals from 10 Hz to kHz, which is within the audible range, so black hole mergers can be 'heard' by converting data into sound, even though they're not actually sound waves

Gravitational wave frequency depends on black hole mass and orbit. LIGO detects signals from 10 Hz to kHz, which is within the audible range, so black hole mergers can be 'heard' by converting data into sound, even though they're not actually sound waves

21,784 просмотров • 9 месяцев назад

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