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Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Largest shock wave in the universe is '60 times larger than the Milky Way,' new study finds
https://www.livescience.com/merging-gal … shock-wave
called Abell 3667

Located about 730 million light-years from Earth, Abell 3667 is a galaxy cluster in chaos. Actually composed of two clusters (or groups) of galaxies colliding into one another, Abell 3667 contains more than 550 individual galaxies slowly stirring into one big cosmic gumbo.

It's not readily apparent to most telescopes, but this cosmic collision has created an enormous disturbance in the region — a gargantuan shock wave flaring out of either side of the merging cluster, and visible only in radio wavelengths.

"The shock waves act as giant particle accelerators and accelerate electrons almost to the speed of light," lead study author Francesco de Gasperin, visiting scientist at the Hamburg Observatory in Germany, said in a statement. "The waves are threaded by an intricate pattern of bright filaments that trace the location of giant magnetic field lines and the regions where electrons are accelerated."

Last edited by Mars_B4_Moon (2022-03-02 07:42:41)

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

2 monster black holes are headed toward a collision that will rock the fabric of space-time
https://www.livescience.com/supermassiv … ole-merger

ATLAS and CMS chase the invisible with the Higgs boson
https://home.cern/news/news/physics/atl … iggs-boson

Astronomers Suggest a Surprising New Way to Detect Alien Megastructures
https://singularityhub.com/2022/01/29/a … tructures/

What Can the James Webb Space Telescope Tell Us About Dark Matter?
https://www.azoquantum.com/article.aspx?ArticleID=294

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

“Closest Black Hole” System Doesn’t Contain a Black Hole – “Stellar Vampirism”

https://scitechdaily.com/closest-black- … lack-hole/

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

New study sheds light on axion dark matter

https://www.spacedaily.com/reports/New_ … r_999.html

The identity of dark matter, which makes up 85% of the matter in the universe, is one of the big unanswered questions in particle physics.

kbd512

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Registered: 2015-01-02

Posts: 7,857

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

It's most likely a form of Hydrogen.

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Massive bubbles at center of Milky Way caused by supermassive black hole

https://www.spacedaily.com/reports/Mass … e_999.html

The team's results suggest that Fermi bubbles, discovered in 2010, and microwave haze-a fog of charged particles roughly at the center of the galaxy-were formed by the same jet of energy from the supermassive black hole. The study was led by the National Tsing Hua University in collaboration with U-M and the University of Wisconsin.

"Our findings are important in the sense that we need to understand how black holes interact with the galaxies that they are inside, because this interaction allows these black holes to grow in a controlled fashion as opposed to grow uncontrollably," said U-M astronomer Mateusz Ruszkowski, a co-author of the study. "If you believe in the model of these Fermi or eRosita bubbles as being driven by supermassive black holes, you can start answering these profound questions."

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Milky Way edge-on view

https://www.esa.int/ESA_Multimedia/Imag … ge-on_view

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Hubble Telescope Spots the Most Distant Star Ever Detected in Outer Space

https://www.smithsonianmag.com/smart-ne … 180979847/

Mars_B4_Moon

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Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Tiny Star Unleashes Gargantuan Beam of Matter and Anti-Matter That Stretches for 40 Trillion Miles
https://scitechdaily.com/tiny-star-unle … ion-miles/

What Is Dark Matter? The Answer to Universe's Greatest Mystery Could Be Axions
https://www.cnet.com/science/space/what … be-axions/

Unexpected Behavior of Hybrid Matter–Antimatter Atoms in Superfluid Helium Surprises Physicists at CERN
https://scitechdaily.com/unexpected-beh … s-at-cern/

Moon’s orbit proposed as a gravitational wave detector
https://www.alphagalileo.org/en-gb/Item … mId/218957
Gravitational waves, predicted by Albert Einstein at the start of the 20th century and detected for the first time in 2015, are the new messengers of the most violent processes taking place in the universe. The gravitational wave detectors scan different frequency ranges, similar to moving a dial when tuning into a radio station. Nevertheless, there are frequencies that are impossible to cover with current devices and which may harbour signals that are fundamental to understanding the cosmos. One particular example can be seen in microhertz waves, which could have been produced at the dawn of our universe, and are practically invisible to even the most advanced technology available today.

In an article recently published in the prestigious journal Physical Review Letters, researchers Diego Blas from the Department of Physics at the Universitat Autònoma de Barcelona (UAB) and the Institut de Física d’Altes Energies (IFAE), and Alexander Jenkins from the University College London (UCL), point out that a natural gravitational wave detector exists in our immediate environment: the Earth-Moon System. The gravitational waves constantly hitting this system generate tiny deviations in the Moon’s orbit. Although these deviations are minute, Blas and Jenkins plan on taking advantage of the fact that the Moon’s exact position is known with an error of at most one centimeter, thanks to the use of lasers sent from different observatories which are continuously reflected upon mirrors left on the surface of the Moon by the Apollo space mission and others. This incredible precision, with an error of one billionth of a part at most, is what may allow a small disturbance caused by ancient gravitational waves to be detected. The Moon’s orbit lasts approximately 28 days, which translates into a particularly relevant sensitivity when it comes to microhertz, the frequency range researchers are interested in.

Similarly, they also propose using the information other binary systems in the universe may provide as gravitational wave detectors. This is the case of pulsar binary systems distributed throughout the galaxy, systems in which the pulsar’s radiation beam allows obtaining the orbit of these stars with incredible precision (with a precision of one millionth). Given that these orbits last approximately 20 days, the passing of gravitational waves in the microhertz frequency range affect them particularly. Blas and Jenkins concluded that these systems could also be potential detectors of these types of gravitational waves.

With these “natural detectors” in the microhertz frequency range, Blas and Jenkins were able to propose a new form of studying gravitational waves emitted by the distant universe. Specifically, those produced by the possible presence of transitions in highly energetic phases of the early universe, commonly seen in many models.

Jupiter-Size Exoplanet Caught In the Act of Being Born
https://science.slashdot.org/story/22/0 … being-born

Astronomers say they have witnessed a planet being born from a disk of gas and dust swirling around a young star. Such claims have been made before, but the team comes to an even more controversial conclusion: that this planet is forming from gas that is collapsing under its own gravity, a mechanism known as gravitational or disk instability. That stands in contrast to a more widely accepted theory of planet formation, in which dust and rocks stick together, slowly building up a planetary core with enough gravity to pull in gas from the disk. If true, the planetary system would be the strongest evidence to date for disk instability. "This system stands alone right now," says team leader Thayne Currie of the Subaru Telescope in Hawaii.

That conclusion is already dividing theorists. "This system certainly looks like it's [undergoing] disk instability," says Alan Boss of the Carnegie Institution for Science, a longtime advocate of the theory. But Anders Johansen, a theorist at the University of Copenhagen who helped develop the rival theory of core accretion, is not convinced. "This could be either mechanism," he says. Although more than 5000 exoplanets have been discovered, only a few tens have been imaged directly, and none in the act of being born. Currie and colleagues were intrigued by the nearby star AB Aurigae because it was young -- somewhere between 1 million and 4 million years old -- and because its disk contains kinked, spiral features that could indicate protoplanets. But showing that some of the light from its disk was from a glowing-hot new planet rather than reflected starlight was no easy task. "We sat on this result for 5 years," Currie says. "I did not believe it was a planet until fairly recently."

SpaceNut

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Registered: 2004-07-22

Posts: 29,433

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

So what if dark matter is the reminiscence of the big bang which is left over from all dimensions?

Dark matter, the elusive substance that accounts for the majority of the mass in the universe, may be made up of massive particles called gravitons that first popped into existence in the first moment after the Big Bang. And these hypothetical particles might be cosmic refugees from extra dimensions, a new theory suggests.

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

This Alien World Is So Extreme, It Has Literal Clouds of Vaporized Rock
https://www.sciencealert.com/this-alien … rized-rock

Could 'Heavy Light' Be the Missing Dark Matter?
https://www.realclearscience.com/2022/0 … 26289.html

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Astronomers detect first potential ‘rogue’ black hole

https://astronomy.com/news/2022/04/astr … black-hole

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Midsize black holes spotted forming in wreckage of stars

https://www.space.com/intermediate-blac … r-clusters

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Revealing the secret language of dark matter

https://www.spacedaily.com/reports/Reve … r_999.html

In the Universe, dark matter and standard matter "talk" to each other using a secret language. This "discussion" happens thanks to gravity, scientists say, but not in a way they can fully comprehend. A new SISSA study published in "The Astrophysical Journal" sheds light on this long-standing issue.

The authors of the research, Ph.D Student Giovanni Gandolfi and supervisors Andrea Lapi and Stefano Liberati, propose a special property for dark matter called a "non-minimal coupling with gravity". This new type of interaction can modify dark matter gravitational influence on standard 'baryonic' matter.

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

First Dream Chaser vehicle takes shape

https://spacenews.com/first-dream-chase … kes-shape/

Mars_B4_Moon

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Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

NASA Releases Ridiculously Sharp Webb Space Telescope Images

https://gizmodo.com/webb-telescope-shar … 1848899825

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

What's next for Event Horizon Telescope after its black hole pictures?
https://www.newscientist.com/article/23 … -pictures/

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Explosion on a white dwarf observed

https://www.spacedaily.com/reports/Expl … d_999.html

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Cepheids and their radial velocity curves
https://www.cosmos.esa.int/web/gaia/iow_20220527
The variable stars that nowadays are collectively called Cepheids are actually an ensemble of different types identifying three main groups: Classical Cepheids, type II Cepheids and anomalous Cepheids. Classical Cepheids are fundamental standard candles of the extragalactic distance scale. They are also important tracers of the young (~50-500 Myr) population in the host galaxy, while anomalous and type II Cepheids are believed to belong to the intermediate-age (few Gyr) and old (>10 Gyr) populations, respectively.

Gaia Data Release 3 (Gaia DR3) will release multi-band light-curves for more than 15,000 Cepheids of all types in five different environments, namely, the Large and Small Magellanic Clouds, the Andromeda (M31) and Triangulum (M33) galaxies and the Milky Way (including its cluster population and its small satellite dwarf galaxies).

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

This newly discovered neutron star might light the way for a whole new class of stellar object

https://theconversation.com/this-newly- … ect-184050

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Astronomers identify 116,000 new variable stars

https://phys.org/news/2022-06-astronome … stars.html

4 big Milky Way mysteries the next Gaia mission data dump may solve

https://www.space.com/milky-way-mysteri … a-to-solve

Mars_B4_Moon

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Registered: 2006-03-23

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

An Unexpected Gamma Ray Burst

https://www.spacedaily.com/reports/An_U … t_999.html

An international group led by INAF researchers have confirmed that the gamma-ray burst GRB 200826A, which lasted less than two seconds - typical of short bursts - is associated with the explosion of a massive star, which is typical of long gamma-ray bursts. The study, involving also several universities and research institutes in Italy, is primarily based on data collected with the Large Binocular Telescope in Arizona, USA. The observations made the first ever use of adaptive optics to observe a supernova associated with a gamma-ray burst.

So what if dark matter is the reminiscence of the big bang which is left over from all dimensions?

Some interesting 'fandoms' here

In cosmology, dark matter refers to matter particles, of unknown composition, that do not emit or reflect enough electromagnetic radiation (light) to be detected directly, but whose presence may be inferred from gravitational effects on visible matter such as stars and galaxies. Dark matter explains several anomalous astronomical observations, such as anomalies in the rotational speed of galaxies (the galaxy rotation problem). Estimates of the amount of matter present in galaxies, based on gravitational effects, consistently suggest that there is far more matter than is directly observable. The existence of dark matter also resolves a number of seeming inconsistencies in the Big Bang theory, and is crucial for structure formation.

https://space.fandom.com/wiki/Dark_matter

The dark matter component has vastly more mass than the "visible" component of the universe. At present, the density of ordinary baryons and radiation in the universe is estimated to be equivalent to about one hydrogen atom per cubic meter of space. Only about 4% of the total energy density in the universe (as inferred from gravitational effects) can be seen directly. About 22% is thought to be composed of dark matter. The remaining 74% is thought to consist of dark energy, an even stranger component, distributed diffusely in space.

https://cosmos-universe.fandom.com/wiki/Dark_matter

Last edited by Mars_B4_Moon (2022-06-09 07:52:18)

Mars_B4_Moon

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Registered: 2006-03-23

Posts: 9,776

Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

A New Technique Finds a Bundle of Brown Dwarfs

https://www.universetoday.com/156247/a- … wn-dwarfs/

Mars_B4_Moon

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Registered: 2006-03-23

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

'Time crystals' work around laws of physics to offer new era of quantum computing

https://www.space.com/time-crystals-quantum-computing

10 Physics Experiments That Changed Our View Of the Universe
https://www.slashgear.com/884077/10-phy … -universe/

Last edited by Mars_B4_Moon (2022-06-13 07:21:51)

Mars_B4_Moon

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Re: Cosmology - Pulsars, Blackholes, GravityWaves, DarkEnergy, Galactic

Gaia sees strange stars in most detailed Milky Way survey to date

https://www.spacedaily.com/reports/Gaia … e_999.html

What's new in data release 3?
Gaia's data release 3 contains new and improved details for almost two billion stars in our galaxy. The catalogue includes new information including chemical compositions, stellar temperatures, colours, masses, ages, and the speed at which stars move towards or away from us (radial velocity). Much of this information was revealed by the newly released spectroscopy data, a technique in which the starlight is split into its constituent colours (like a rainbow). The data also includes special subsets of stars, like those that change brightness over time.

Also new in this data set is the largest catalogue yet of binary stars, thousands of Solar System objects such as asteroids and moons of planets, and millions of galaxies and quasars outside the Milky Way.

Binary stars, asteroids, quasars, and more
Other papers that are published today reflect the breadth and depth of Gaia's discovery potential. A new binary star catalogue presents the mass and evolution of more than 800 thousand binary systems, while a new asteroid survey comprising 156 thousand rocky bodies is digging deeper into the origin of our Solar System. Gaia is also revealing information about 10 million variable stars, mysterious macro-molecules between stars, as well as quasars and galaxies beyond our own cosmic neighbourhood.