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#251 2022-08-08 15:58:40

Mars_B4_Moon
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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Still not sure if that IceCube math adds up, didn't get to check out any follow up news on it.

No trace of dark matter halos

https://www.spacedaily.com/reports/No_t … s_999.html

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#252 2022-08-17 04:55:37

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Scientists blast atoms with Fibonacci laser to make an "extra" dimension of time

https://www.livescience.com/fibonacci-m … ns-of-time

This Fibonacci pulsing created a time symmetry that, just like a quasicrystal in space, was ordered without ever repeating. And just like a quasicrystal, the Fibonacci pulses also squish a higher dimensional pattern onto a lower dimensional surface. In the case of a spatial quasicrystal such as Penrose tiling, a slice of a five-dimensional lattice is projected onto a two-dimensional surface.

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#253 2022-09-04 14:13:04

Mars_B4_Moon
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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Apod

"Stargate Milky Way" - In Chile, Astrophotgrapher Maxime Oudoux employed stereographic projection to manipulate our galaxy into a circular portal

https://apod.nasa.gov/apod/image/2208/S … x_1800.jpg

https://apod.nasa.gov/

Last edited by Mars_B4_Moon (2022-09-04 14:14:01)

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#254 2022-09-04 14:15:00

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

UW-Madison Researchers Help Explain the Scarcity of Anti-Matter

https://scitechdaily.com/uw-madison-res … atter/amp/

CERN to host Nuclear Physics in Astrophysics conference

https://home.cern/news/announcement/cer … conference

Last edited by Mars_B4_Moon (2022-09-04 14:25:12)

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#255 2022-09-07 05:59:59

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Gamma rays from neighboring galaxy related to millisecond pulsars

https://www.spacedaily.com/reports/Gamm … s_999.html

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#256 2022-09-21 14:52:26

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

A balloon is going to space to find 2 mysterious cosmic particles

https://www.spacechatter.com/2022/09/02 … particles/

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#257 2022-09-26 05:32:29

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Beams of muons used to analyze the elemental composition of Asteroid Ryugu samples

https://www.spacedaily.com/reports/Beam … s_999.html

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#258 2022-10-19 10:23:50

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Shortly Before They Collided, two Black Holes Tangled Spacetime up Into Knots

https://www.universetoday.com/158086/sh … nto-knots/

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#259 2022-10-26 20:41:30

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Black hole vomits years after gobbling up a star
https://mashable.com/article/supermassi … d-emission
A stellar meal that didn't sit well.

Webb Uncovers Dense Cosmic Knot In The Early Universe
https://spaceref.com/science-and-explor … -universe/

Last edited by Mars_B4_Moon (2022-10-26 20:42:28)

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#260 2022-10-28 11:21:51

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

The Smallest, Lightest Neutron Star Ever Seen Could be a “Strange Star”

https://www.universetoday.com/158331/th … ange-star/

The life of every star is a fight against gravity. Stars are so massive they risk collapsing under their own weight, but this is balanced by the heat and pressure a star generates through nuclear fusion. Eventually, that comes to an end. The outer layers of a star will be cast off, and the remaining core will become a stellar remnant. Which kind of remnant depends on the mass of the core.

If the core is less than 1.4 solar masses, then it will collapse until the pressure of electrons balances its weight, thus becoming a white dwarf. If the core is more massive than that, up to perhaps 3 solar masses, it collapses until neutron pressure resists, creating a neutron star. Beyond that, the core will collapse into a stellar-mass black hole.

At least that seems to be the case. The most massive white dwarf we’ve found is about 1.35 solar masses, and the smallest black hole we’ve observed is about 2.6 solar masses. The most massive confirmed neutron star is about 2.14 solar masses. Of course, the cut-off ranges aren’t absolute. A stellar core might be a bit under 1.4 solar masses but experiences an explosive collapse that pushes it to become a neutron star. Neutron stars of 1.2 or 1.3 solar masses would be unusual, but not impossible. But recent observations of the neutron star HESS J1731-347 seem to give it a mass of 0.77 solar masses, which shouldn’t be possible.

Last edited by Mars_B4_Moon (2023-02-22 09:49:34)

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#261 2023-02-20 10:22:11

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Event Horizon Telescope captures images of NRAO 530 quasar

https://phys.org/news/2023-02-event-hor … mages.html

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#262 2023-02-22 09:49:04

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

When Neutron Stars Collide, the Explosion is Perfectly Spherical

https://www.universetoday.com/160165/wh … spherical/

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#263 2023-02-24 09:04:42

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

“The Universe Breakers”: Six Galaxies That are Too Big, Too Early

https://www.universetoday.com/160243/si … too-early/

In the first data taken last summer with the Near Infrared Camera (NIRCam) on the new James Webb Space Telescope, astronomers found six galaxies from a time when the Universe was only 3% of its current age, just 500-700 million years after the Big Bang. While its incredible JWST saw these galaxies from so long ago, the data also pose a mystery.

These galaxies should be mere infants, but instead they resemble galaxies of today, containing 100 times more stellar mass than astronomers were expecting to see so soon after the beginning of the Universe. If confirmed, this finding calls into question the current thinking of galaxy formation and challenges most models of cosmology.

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#264 2023-02-28 11:47:02

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Astronomers have discovered a supermassive black hole that escaped from its galaxy, dragging a string of stars behind it at 5.6 million km/h

https://gagadget.com/en/science/219740- … stars-beh/

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#265 2023-03-09 09:23:13

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Watch the Milky Way’s Black Hole Spaghettify a Cloud

https://skyandtelescope.org/astronomy-n … y-a-cloud/

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#266 2023-03-24 03:45:05

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

The SVOM mission (Space-based multi-band astronomical Variable Objects Monitor) is a Franco-Chinese mission dedicated to the study of the most distant explosions of stars, the gamma-ray bursts.

French instruments ECLAIRs and MXT arrive in China
https://twitter.com/CNSpaceflight/statu … 1493967872

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#267 2023-03-30 13:22:49

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Gaia discovers a new family of black holes

https://www.esa.int/Science_Exploration … lack_holes

Using data from ESA’s Gaia mission, astronomers have discovered not only the closest but also the second closest black hole to Earth. The black holes, Gaia BH1 and Gaia BH2, are respectively located just 1560 light-years away from us in the direction of the constellation Ophiuchus and 3800 light-years away in the constellation Centaurus. In galactic terms, these black holes reside in our cosmic backyard.

The two black holes were discovered by studying the movement of their companion stars. A strange ‘wobble’ in the movement of the stars on the sky indicated that they are orbiting a very massive object. In both cases, the objects are approximately ten times more massive than our Sun. Other explanations for these massive companions, like double-star systems, were ruled out since they do not seem to emit any light.

The movement of stars against the sky can give essential clues about objects that gravitationally influence these stars. These objects can include other stars, exoplanets, and also black holes.

Black holes are often not completely invisible. When material falls onto them, they may emit light in radio and X-ray. For Gaia’s second black hole, NASA's Chandra X-ray Observatory and the South African MeerKAT radio telescope on the ground looked for this light, but they were not able to spot any signal.

“Even though we detected nothing, this information is incredibly valuable because it tells us a lot about the environment around a black hole.There are a lot of particles coming off the companion star in the form of stellar wind. But because we didn't see any radio light, that tells us the black hole isn't a great eater and not many particles are crossing its event horizon. We don’t know why that is, but we want to find out!” says Yvette Cendes who helped discover the second black hole and is an astronomer at the Harvard-Smithsonian Center for Astrophysics in the US.

The new type of black hole does not emit any light, making them practically invisible, probably because they are much further away from their companion stars. Gaia BH1 and Gaia BH2 have the most widely separated orbits of all known black holes .The fact that they are also the closest known black holes to Earth suggests that many more similar black holes in wide binaries are still waiting to be discovered.

Last edited by Mars_B4_Moon (2023-03-30 13:25:18)

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#268 2023-05-01 08:28:11

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Astronomers detect the closest example yet of a black hole devouring a star

https://phys.org/news/2023-04-astronome … uring.html

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#269 2023-05-18 12:50:14

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Astronomers Have a New Way to Measure the Expansion of the Universe

https://www.universetoday.com/161419/as … -universe/

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#270 2023-05-24 15:41:52

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

Has Gaia found missing link in black hole evolution

https://www.spacedaily.com/reports/Has_ … n_999.html

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#271 2023-06-01 05:14:37

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

LHC Experiments See First Evidence of a Rare Higgs Boson Decay

https://home.web.cern.ch/news/news/phys … oson-decay

CERN:
The discovery of the Higgs boson at CERN's Large Hadron Collider (LHC) in 2012 marked a significant milestone in particle physics. Since then, the ATLAS and CMS collaborations have been diligently investigating the properties of this unique particle and searching to establish the different ways in which it is produced and decays into other particles. At the Large Hadron Collider Physics (LHCP) conference last week, ATLAS and CMS report how they teamed up to find the first evidence of the rare process in which the Higgs boson decays into a Z boson, the electrically neutral carrier of the weak force, and a photon, the carrier of the electromagnetic force. This Higgs boson decay could provide indirect evidence of the existence of particles beyond those predicted by the Standard Model of particle physics.

The decay of the Higgs boson into a Z boson and a photon is similar to that of a decay into two photons. In these processes, the Higgs boson does not decay directly into these pairs of particles. Instead, the decays proceed via an intermediate "loop" of "virtual" particles that pop in and out of existence and cannot be directly detected. These virtual particles could include new, as yet undiscovered particles that interact with the Higgs boson. The Standard Model predicts that, if the Higgs boson has a mass of around 125 billion electronvolts, approximately 0.15% of Higgs bosons will decay into a Z boson and a photon. But some theories that extend the Standard Model predict a different decay rate. Measuring the decay rate therefore provides valuable insights into both physics beyond the Standard Model and the nature of the Higgs boson.

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#272 2023-06-22 02:41:11

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

We had many discussions on Exotic Matter, Dark Matter Wind, Wormholes etc

Quantum mechanics the spooky science is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and smaller again at tiny subatomic particles. Symmetry is a term we use to describe a sense of harmonious and beautiful proportion and balance. In theoretical physics, quantum chromodynamics (QCD) is the theory of the strong interaction between quarks mediated by gluons, the symmetry of a quantum mechanical system can be restored if another approximate symmetry S can be found such that the combined symmetry PS remains unbroken.  CP-symmetry states that the laws of physics should be the same if a particle is interchanged with its antiparticle (C-symmetry) while its spatial coordinates are inverted ("mirror" or P-symmetry). The discovery of CP violation in 1964 in the decays of neutral kaons resulted in the Nobel Prize in Physics in 1980 for its discoverers James Cronin and Val Fitch.  The strong CP problem is a question in particle physics, which brings up the following quandary: why does quantum chromodynamics (QCD) seem to preserve CP-symmetry? In particle physics, CP stands for the combination of charge conjugation symmetry (C) and parity symmetry (P).  An axion  is a hypothetical elementary particle originally postulated by the Peccei–Quinn theory in 1977 to resolve the strong CP problem in quantum chromodynamics (QCD). If axions exist and have low mass within a specific range, they are of interest as a possible component of cold dark matter.

The Evidence is Building that Dark Matter is Made of Axions
https://www.universetoday.com/162008/th … of-axions/
There’s some potentially big news on the hunt for dark matter. Astronomers may have a handle on what makes this mysterious cosmic stuff: strange particles called “axions.”

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#273 2023-06-22 03:42:55

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

The expansion of the universe could be a mirage, new theoretical study suggests

https://www.livescience.com/physics-mat … y-suggests

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#274 2023-08-22 07:12:31

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

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#275 2023-08-30 11:27:25

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Re: Singularity - Black Holes, Gamma Rays, Magnetars, etc

A new method helps to measure cosmological distances more accurately
https://phys.org/news/2023-08-method-co … ately.html

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