readbeanicecreamLargest-ever computer simulation of the universe escalates cosmology dilemma
https://www.space.com/largest-computer-simulation-of-universe-s8-debate
MrPhysics
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PhD astrophysicist, software engineer, gamer, roleplayer, husband, and dad.
Qasim Rashid, Esq.Wow. Rep Ro Khanna to intro major bill to increase congressional & judicial accountability:
•12 year Congress term limit
•18 year SCOTUS term limit
•Judicial code of ethics
•Ban Congress from trading stocks
•Ban Corporate & PAC donations
Count me in!
https://www.washingtonexaminer.com/news/house/ro-khanna-unveils-blueprint-term-limits-stock-trading-ban
Ro Khanna unveils political reform blueprint with term limits and stock trading ban
Rep. Ro Khanna (D-CA) is set to unveil a plan intended to reform Congress and the federal government that includes a number of proposals that have garnered bipartisan support in recent months, such as the implementation of term limits and a ban on stock trading for lawmakers.
Paul Houle💥 The first observation of neutrinos at CERN's Large Hadron Collider
https://phys.org/news/2023-08-neutrinos-cern-large-hadron-collider.html
The first observation of neutrinos at CERN's Large Hadron Collider
Neutrinos are tiny and neutrally charged particles accounted for by the Standard Model of particle physics. While they are estimated to be some of the most abundant particles in the universe, observing them has so far proved to be highly challenging, as the probability that they will interact with other matter is low.
Dr. Victoria Grinberg#Papertime! 🌌 💫 📡 (From Monday, but I totally did not have the time to post this before ...)
"The first mm detection of a neutron star high-mass X-ray binary" led by the amazing J. van den Eijnden, including @fuerst, @pkretsch, yours truly et al.
MNRAS submitted (not yet refereed).
▶️ https://ui.adsabs.harvard.edu/abs/2023arXiv230806021V/abstract
What is this about and why is this important? Follow along for a science 🧵
The first mm detection of a neutron star high-mass X-ray binary
Neutron stars accreting from massive binary companions come in a wide range of types. Systems with an OB supergiant donor are often divided between persistently and transiently accreting systems, respectively called Supergiant X-ray Binaries (SgXBs) and Supergiant Fast X-ray Transients (SFXTs). The origin of this dichotomy in accretion behaviour is typically attributed to systematic differences in the massive stellar wind, the binary orbit, or magnetic field configuration, but direct observational evidence for these hypotheses remains sparse. Here, we present the results of a pilot exploration of a novel approach to this long-standing question, turning to the mm band to probe the outer regions of the stellar wind beyond the binary orbit. Specifically, we present 100-GHz NOEMA observations of a SgXB, X1908+075, and a SFXT, IGR J18410-0535. We detect the SFXT as a point source at $63.4 \pm 9.6$ $\mu$Jy, while the SgXB is not detected. The spectrum of IGR J18410-0535 is constrained to be flat or inverted by comparing with quasi-simultaneous $5.5$+$9$ GHz radio observations, ruling out non-thermal flaring and consistent with thermal wind emission. Additional X-ray measurements further constrain the wind mass loss rate and velocity of the SgXB. We compare our targets with each other and earlier wind estimates, and reflect on future opportunities using this novel observational approach to characterize stellar winds in X-ray binaries.
Svenja LohmannThis week a lot of physicists have been getting both very excited and very sceptical about a new preprint titled “The First Room-Temperature Ambient-Pressure Superconductor”. So, what’s the deal? 🧵 1/
#Superconductivity #Science #Physics
#Superconductivity #Science #Physics
Daniel PomarèdeScience Magazine Astronomy Covers
Ulysses at Jupiter (1992)
Featuring a drawing of the Ulysses spacecraft leaving Jupiter, traveling southward in the previously unexplored dusk sector. Also featured: the large Io plasma torus and a small Auroral Oval. Credit: Jet Propulsion Laboratory.
https://www.science.org/toc/science/257/5076
#universe #astronomy #astrophysics #astrodon #space #science #research #sciencecovers #jupiter #ulysses #spacecraft #rendezvous #io #aurora #dusk #solarsystem #exploration #nasa #jpl
"We practitioners of computational cosmology sometimes forget the absurd grandiosity of our ambition."
Check out Tom Abels review of Andrew Pontzen's book "The Universe in a Box", in Science Magazine's latest issue.
https://www.science.org/doi/10.1126/science.adi4682
Illustration: R. Kaehler & T. Abel (KIPAC/Stanford)
#universe #cosmology #astronomy #astrophysics #astrodon #space #science #research #computational #physics #simulations #book #review
Two-faced star with helium and hydrogen sides baffles astronomers: https://theguardian.com/science/2023/jul/19/two-faced-star-with-helium-and-hydrogen-sides-baffles-astronomers-janus
Credit animation : K. Miller, Caltech/IPAC
See also:
➡️ the Nature paper by Ilaria Caiazzo and co-authors: https://nature.com/articles/s41586-023-06171-9
➡️ the Keck Observatory Science News: https://keckobservatory.org/janus
#universe #astronomy #astrophysics #astrodon #dwarf #star #dwarfstar #janus #whitedwarf #stars
Project GutenbergJonas Ferdinand Gabriel Lippmann died #OTD in 1921. He was awarded by the Nobel Prize in Physics (1908) “for his method of reproducing colours photographically based on the phenomenon of interference.”
Marie Curie was his Doctoral student. And Pierre Curie was his collaborator in piezoelectricity. Lippmann made several important contributions to various branches of physics over the years. via @wikipedia
Nature Journal astronomy covers
Jupiter revisited (2018) - Juno mission offers a fresh perspective on the gas giant
Featuring a stunning view of the central cyclone at the planet's north pole and the eight cyclones that encircle it.
https://nature.com/nature/volumes/555/issues/7695
Credit image: NASA/SWRI/JPL/ASI/INAF/IAPS
#universe #astronomy #astrophysics #astrodon #nature #cover #covers #naturecovers #space #science #research #solarsystem #jupiter #cyclone #cyclones #juno #spacecraft #nasa #planet #planets
