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CHEMNOLOGY - NERDY NEWS that MATTERS

NASA space observatory catches gamma rays
from a Gravitational event detected by LILO

That's a first!!

https://www.nasa.gov/press-release/nasa-missions-catch-first-light-from-a-gravitational-wave-event

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CHEMNOLOGY - NERDY NEWS that MATTERS

What's also significant to me is that
the LILO seemed to have detected a collision
of start that were not just Black Holes Colliding

and it seems the telecopes then aimed for that
to find this

that gold is created from stars is somewhat predictable
but good to finally have hard science showing that

Was it "CSN&Y or Kiregrad who once said"
"We are STARDUST......??!!

Neutron Star Collision detected by LIGO and Virgo for First Time. It shows Origin of Gold
#BreakingNews #Science

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CHEMNOLOGY - NERDY NEWS that MATTER

Well, This is really amazing
I have to admit I was a skeptic
of the ocean barge part at least

I DO know ALOT about what it took
to get payloads and such on the SHUTTLES

and a little bit about what they had to do
TO THE SHUTTLES from landing to launchpad
AND IT WAS PRETTY EXTENSIVE for
time and money

This re-usable rocket from SPACE X
IS WAY AHEAD of that game

https://www.yahoo.com/news/spacex-getting-really-good-launching-045506897.html

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This is impressive. I was reading about the missing baryon just a few days ago. If this is reproducible the missing mass of the universe has been found.
I'm afraid it's always going to be called dark matter but it really isn't. The baryon net that holds the galaxies in order is far more impressive.
It is possible that we were both correct about dark matter.

Has the Dark Matter mystery been solved?


Half the universe’s missing matter has just been finally found


The missing links between galaxies have finally been found. This is the first detection of the roughly half of the normal matter in our universe – protons, neutrons and electrons – unaccounted for by previous observations of stars, galaxies and other bright objects in space.

You have probably heard about the hunt for dark matter, a mysterious substance thought to permeate the universe, the effects of which we can see through its gravitational pull. But our models of the universe also say there should be about twice as much ordinary matter out there, compared with what we have observed so far.

Two separate teams found the missing matter – made of particles called baryons rather than dark matter – linking galaxies together through filaments of hot, diffuse gas.

“The missing baryon problem is solved,” says Hideki Tanimura at the Institute of Space Astrophysics in Orsay, France, leader of one of the groups. The other team was led by Anna de Graaff at the University of Edinburgh, UK.

Because the gas is so tenuous and not quite hot enough for X-ray telescopes to pick up, nobody had been able to see it before.

“There’s no sweet spot – no sweet instrument that we’ve invented yet that can directly observe this gas,” says Richard Ellis at University College London. “It’s been purely speculation until now.”

So the two groups had to find another way to definitively show that these threads of gas are really there.

Both teams took advantage of a phenomenon called the Sunyaev-Zel’dovich effect that occurs when light left over from the big bang passes through hot gas. As the light travels, some of it scatters off the electrons in the gas, leaving a dim patch in the cosmic microwave background – our snapshot of the remnants from the birth of the cosmos.



Stack ‘em up

In 2015, the Planck satellite created a map of this effect throughout the observable universe. Because the tendrils of gas between galaxies are so diffuse, the dim blotches they cause are far too slight to be seen directly on Planck’s map.

Both teams selected pairs of galaxies from the Sloan Digital Sky Survey that were expected to be connected by a strand of baryons. They stacked the Planck signals for the areas between the galaxies, making the individually faint strands detectable en masse.

Tanimura’s team stacked data on 260,000 pairs of galaxies, and de Graaff’s group used over a million pairs. Both teams found definitive evidence of gas filaments between the galaxies. Tanimura’s group found they were almost three times denser than the mean for normal matter in the universe, and de Graaf’s group found they were six times denser – confirmation that the gas in these areas is dense enough to form filaments.

“We expect some differences because we are looking at filaments at different distances,” says Tanimura. “If this factor is included, our findings are very consistent with the other group.”


Finally finding the extra baryons that have been predicted by decades of simulations validates some of our assumptions about the universe.

“Everybody sort of knows that it has to be there, but this is the first time that somebody – two different groups, no less – has come up with a definitive detection,” says Ralph Kraft at the Harvard-Smithsonian Center for Astrophysics in Massachusetts.

“This goes a long way toward showing that many of our ideas of how galaxies form and how structures form over the history of the universe are pretty much correct,” he says.

......


The Papers



A Search for Warm/Hot Gas Filaments Between Pairs of SDSS Luminous Red Galaxies




We search the Planck data for a thermal Sunyaev-Zel'dovich (tSZ) signal due to gas filaments between pairs of Luminous Red Galaxies (LRG's) taken from the Sloan Digital Sky Survey Data Release 12 (SDSS/DR12). We identify ∼260,000 LRG pairs in the DR12 catalog that lie within 6-10 h−1Mpc of each other in tangential direction and within 6 h−1Mpc in radial direction. We stack pairs by rotating and scaling the angular positions of each LRG so they lie on a common reference frame, then we subtract a circularly symmetric halo from each member of the pair to search for a residual signal between the pair members. We find a statistically significant (5.3σ) signal between LRG pairs in the stacked data with a magnitude Δy=(1.31±0.25)×10−8. The uncertainty is estimated from two Monte Carlo null tests which also establish the reliability of our analysis. Assuming a simple, isothermal, cylindrical filament model of electron over-density with a radial density profile proportional to rc/r (as determined from simulations), where r is the perpendicular distance from the cylinder axis and rc is the core radius of the density profile, we constrain the product of over-density and filament temperature to be δc×(Te/107K)×(rc/0.5h−1Mpc)=2.7±0.5. To our knowledge, this is the first detection of filamentary gas at over-densities typical of cosmological large-scale structure. We compare our result to the BAHAMAS suite of cosmological hydrodynamic simulations (McCarthy et al. 2017) and find a slightly lower, but marginally consistent Comptonization excess, Δy=(0.84±0.24)×10−8.


[https://arxiv.org/abs/1709.05024]


....



Missing baryons in the cosmic web revealed by the Sunyaev-Zel'dovich effect


Observations of galaxies and galaxy clusters in the local universe can account for only 10% of the baryon content inferred from measurements of the cosmic microwave background and from nuclear reactions in the early Universe. Locating the remaining 90% of baryons has been one of the major challenges in modern cosmology. Cosmological simulations predict that the 'missing baryons' are spread throughout filamentary structures in the cosmic web, forming a low density gas with temperatures of 105−107 K. Previous attempts to observe this warm-hot filamentary gas via X-ray emission or absorption in quasar spectra have proven difficult due to its diffuse and low-temperature nature. Here we report a 5.1σ detection of warm-hot baryons in stacked filaments through the thermal Sunyaev-Zel'dovich (SZ) effect, which arises from the distortion in the cosmic microwave background spectrum due to ionised gas. The estimated gas density in these 15 Megaparsec-long filaments is approximately 6 times the mean universal baryon density, and overall this can account for ∼30% of the total baryon content of the Universe. This result establishes the presence of ionised gas in large-scale filaments, and suggests that the missing baryons problem may be resolved via observations of the cosmic web.


[https://arxiv.org/abs/1709.10378v1]

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Havent seen the second or third episode yet
Probably get the stream next payday

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RADIO M - Last NEW MUSIC from TP??

MODERN RADIO MENTALITY
WE LOVE (RIP) TOM PETTY
SO MUCH, we will IN FACT
NEVER PLAY ANYTHING OFF
HIS LAST THREE ALBUMS

BUT....

you can hear
REFUGEE
SCRATCH MY PATUTIE.. CUTIE
and AMERICAN GIRL

AGAIN AND AGAIN FOR
THE NEXT TWENTY YEARS

ENJOY

https://www.youtube.com/watch?v=NFUyHYqp_5w&list=PL91d6a2pIQcUz2fPp-ojiZTRodO6ovPL3

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60's star trek...behind the scenes
Photo
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