#V616 Mon

[sciencenewsforstudents]

The closest black hole to the solar system ever spotted may be just 1,000 light-years away. This newfound dark neighbor is at least 4.2 times as massive as the sun, and lives with two ordinary stars whose funny orbits gave the black hole’s presence away, astronomers report May 6 in Astronomy & Astrophysics.

Astronomers expect the Milky Way to harbor between 100 million and a billion black holes with masses between a few and 100 times the sun’s. But most of those black holes are invisible. “If it’s lonely out there without a companion, you’ll never find it,” says astrophysicist Thomas Rivinius of the European Southern Observatory in Santiago, Chile.

The few dozen small black holes that have been spotted so far interact violently with their environments, gobbling up gas from a companion star and heating the gas until it emits X-rays (SN: 4/4/18). The previous nearest known black hole, called V616 Mon, emits X-rays from about 3,200 light-years away.

The new neighbor black hole, called HR 6819, is not actively eating and so is invisible, the researchers say. But it appears to have two companions: one star that the black hole orbits every 40 days that is heavier and hotter than the sun as well as a more distant, massive star orbiting the star-black hole pair that is rotating so fast that it’s almost breaking apart. The motions of those two stars first suggested something weighing at least four solar masses must be orbiting with them, unseen.

[felidaeng]

Your new kin is a0620-00 (v616 mon) of Monoceros

finally a good fucking kin

[apod]

2019 October 1

Black Hole Safety Video Video Credit: NASA's GSFC, SVS; Music: Prim and Proper from Universal Production Music

Explanation: If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting. Black holes are clumps of matter so dense that light cannot escape. Pairs of black holes, each several times the mass of our Sun, have recently been found to merge by detection of unusual gravitational radiation. The regions surrounding supermassive black holes in the centers of galaxies can light up as stars that near them get shredded. The closest known black hole to the Earth is V616 Mon, which is about 3,300 light years away. The best way for our monster friend to stay safe, the video informs, is to not go too close.

∞ Source: apod.nasa.gov/apod/ap191001.html

[heilcontra]

V616 Mon

This violence shall soon be brought to an end when the far light passes you then bends. there you knew, how fucked up you are. You’re a dead star. an old forgotten friend.

[halocantik]

Measuring the mass of a black hole is not easy. New technology can change that

An active powered black hole is surrounded by a disk of hot gas and dust that vibrates like a bonfire. Astronomers have discovered that tracking changes in these vibrations can reveal something that is extremely difficult to measure: the weight of the hippopotamus.

 "This is a new way to weigh black holes," said astronomer Colin Burke of the University of Illinois at Urbana-Champagne. Additionally, the method can be applied to any astrophysical object with an accretion disk and could even help locate elusive medium-sized black holes, researchers reported to Science on Aug. 13.

 It is not easy to measure the mass of a black hole. On the one hand, dark giants are known for their difficult visibility. But sometimes black holes appear when they eat. As gas and dust fall into the black hole, matter is placed in a disk that warms to temperatures hot to white and, in some cases, can shade all the stars in the galaxy together.

 Measuring the diameter of a black hole can reveal its mass using Einstein's theory of general relativity. But only Horizon telescopes worldwide have made this type of measurement and so far only for black holes (SN: 22/04/19). Other black holes are weighed by observing their effect on the surrounding matter, but these require a lot of data and won't work for every supermassive black hole.

 Looking for another route, Burke and his colleagues turned to accretion disks. Astronomers aren't sure how the disk flashes in a black hole, but small changes in the light seem to combine to illuminate or darken the entire disk over a period of time. Previous research has shown that the time it takes the disk to fade, flash, and fade again is related to the mass of the central black hole. But these claims are contradictory and do not cover the full spectrum of the black hole's mass, Burke said.

 So he and his colleagues gathered observations of 67 black holes of known mass that were actively feeding. Hippos cover sizes from 10,000 to 10,000 billion solar masses. In this tiniest black hole, the vibrations change hourly from hour to week. Supermassive black holes with masses between 100 million and 10 billion solar masses flash more slowly every few hundred days.

 "This gives us an indication that if this association holds for both small supermassive black holes and large black holes, it may be a universal characteristic," Burke said.

 Out of curiosity, the team also examined white dwarfs, the dense bodies of sun-like stars that are among the smallest objects for successive accretion disks. These white dwarfs follow the same relationship between vibrational velocity and mass.

 The black holes analyzed do not cover the entire range of possible masses. Famous black holes, which have masses of about 100 to 100,000 times the sun, are rare. There are several potential candidates, but only one is confirmed (SN: 09/02/20). In the future, the relationship between disc vibrations and the mass of black holes could tell astronomers what disc vibrations to look for to get this medium-sized beast out of its hiding place when found, Burke said.

 Astrophysicist Vivien Baldassare of the University of Washington at Pullman studies black holes in dwarf galaxies that may retain some of the properties of old black holes in the early universe. One of the biggest challenges in his work was measuring the mass of black holes. "The results of this very interesting study ... will have a major impact on my research and I look forward to many more," he said.

 This method offers a simpler way to weigh black holes than previous techniques, Burke said -- but not necessarily faster. A more massive black hole, for example, takes hundreds of days and maybe even years of observation to reveal its mass.

 Upcoming observatories are already planning to record the data. The Vera C. Rubin Observatory is expected to observe the entire sky every night starting in 2022 or 2023 (SN: 1/10/20). After the telescope has run long enough, the observations needed to weigh the black hole will be "omitted from the Rubin Observatory data free of charge," Burke said. "We've built it. We can do that too. "

When it comes to space, you must have had a black hole, aka a black hole, right? Among all space objects, black holes are one of the most feared because they are considered to bring destruction and destroy everything. The effect is very damaging.

 Then, what will happen if one day we meet a black hole and are sucked into it? Are we going to live, die, or just disappear? Reported from various sources, here are some theories that hope to answer these questions!

  1. To clarify, first of all, let's get to know what a black hole really is

What Happens If You Get Into a Black Hole?  Astronomers Sayaskamathematician.com

According to NASA's statement from its website, a black hole is a place where gravity pulls so hard that even light cannot escape. The gravity is very strong because the material is compressed into a very small space.

 Since light is completely incapable of surviving this gravitational pull, it is no wonder that it is completely black in color. From here we know the origin of the name, right?

Some of them are as small as an atom, but have a mass as heavy as a mountain on Earth. Reporting from interesting engineering , Stellar black holes (with a mass more than 20 times our sun) are formed when large stars disintegrate. This process will create a curvature of space and time.

 Meanwhile, supermassive black holes (with masses ranging from more than 1 million times our sun) are thought to have formed when the galaxy they inhabit formed. Reporting from phys.org , V616 Mon is located about 3 thousand light-years from Earth and has a mass of 9-13 times heavier than the Sun in our solar system. The researchers know its location because it is located in a binary system with a star half the mass of the Sun.

 Only a black hole can make its binary partner feel buzzing so fast. Astronomers cannot see black holes. They only know it's there as a result of the spinning "gravity dance." Spooky too, huh!

Reporting from phys.org , V616 Mon is located about 3 thousand light-years from Earth and has a mass of 9-13 times heavier than the Sun in our solar system. The researchers know its location because it is located in a binary system with a star half the mass of the Sun.

 Only a black hole can make its binary partner feel buzzing so fast. Astronomers cannot see black holes. They only know it's there as a result of the spinning "gravity dance." Spooky too, huh!

[blackbooksandblackholesanna]

Monoceros constellation

Monoceros constellation (Mon) otherwise knows as the unicorn is best viewed in winter during the month of February. Mon is located in the second quadrant of the Northern hemisphere and is the 35th constellation in terms of size. The boundary of the Monoceros constellation contains 14 stars that host know exoplanets. The brightest star being Beta Monocerotis, to the naked eye Beta appears as one singer star but is actually a triple star system. 

This constellation was depicted in 1612 and has long been associated with a christian symbol of purity.

Black holes in Monoceros 

V616 mon is one of the closest black holes to the earth being 3000 light ears away from us and has about 9-13 times the mass of the sun. Astronomers cannot see the black hole but know its there due to a ‘whirling gravity dance’. 

[spaceforethiopian-blog]

v616 mon is the closest planet for our solar system .v116 mon is located in  Monoceros  constellation .v616 mon is 3457 light year away from our solar system.so it is not dangerous to our solar system that mean there is nothing black hole dangerous to earth 

[netexecindia]

Black Hole Safety Video October 01, 2019 via NASA If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting. Black holes are clumps of matter so dense that light cannot escape. Pairs of black holes, each several times the mass of our Sun, have recently been found to merge by detection of unusual gravitational radiation. The regions surrounding supermassive black holes in the centers of galaxies can light up as stars that near them get shredded. The closest known black hole to the Earth is V616 Mon, which is about 3,300 light years away. The best way for our monster friend to stay safe, the video informs, is to not go too close. #NASA https://go.nasa.gov/2oOy9ci

[frankkjonestx]

The closest black hole to Earth may have been spotted 1,000 light-years away

The closest black hole to the solar system ever spotted may be just 1,000 light-years away. This newfound dark neighbor is at least 4.2 times as massive as the sun, and lives with two ordinary stars whose funny orbits gave the black hole’s presence away, astronomers report May 6 in Astronomy & Astrophysics.

Astronomers expect the Milky Way to harbor between 100 million and a billion black holes with masses between a few and 100 times the sun’s. But most of those black hole are invisible. “If it’s lonely out there without a companion, you’ll never find it,” says astrophysicist Thomas Rivinius of the European Southern Observatory in Santiago, Chile.

The few dozen small black holes that have been spotted so far interact violently with their environments, gobbling up gas from a companion star and heating the gas until it emits X-rays (SN: 4/4/18). The previous nearest known black hole, called V616 Mon, emits X-rays from about 3,200 light-years away.

The new neighbor black hole, called HR 6819, is not actively eating and so is invisible, the researchers say. But it appears to have two companions: one star that the black hole orbits every 40 days that is heavier and hotter than the sun as well as a more distant, massive star orbiting the star-black hole pair that is rotating so fast that it’s almost breaking apart. The motions of those two stars first suggested something weighing at least four solar masses must be orbiting with them, unseen.

“We would have seen it if it was a normal star,” Rivinius says. “If it’s not a normal star, the only thing it can be otherwise is a black hole.” HR 6819 is near enough and its stars are bright enough that on a dark, clear night in the Southern Hemisphere, the stars can be seen with the naked eye, the scientists say.

There could be many other unseen black holes of similar mass in the Milky Way, says ESO astronomer Marianne Heida, who is based in Garching, Germany. “It would be a little bit too convenient, if there’s only one in the Milky Way, that it’s right next door,” she says.

Rivinius and his colleagues first spotted the black hole by accident more than 15 years ago. A team led by Stanislav Štefl, then of ESO in Santiago, observed the system in 2004 as part of a study of fast-spinning pairs of stars. The team suspected there might be a third, invisible object locked in an orbital dance with the two visible stars.

But in 2014, before the team could publish the observations, Štefl died in a car accident. “I consider this part of his legacy, this work,” Rivinius says.

The team picked the research back up after another black hole, called LB-1, was reported in November 2019. That black hole appears to be orbiting a more ordinary star, and seems weirdly heavy, about 68 times the mass of the sun (SN: 11/27/19). But Rivinius’ team thinks that, like HR 6819, it’s probably a smaller black hole with two companion stars instead.

It’s possible that both HR 6819 and LB-1 are more ordinary than they appear, says astrophysicist J.J. Eldridge at the University of Auckland in New Zealand. She thinks that instead of a black hole, the systems could involve a third massive star with a disk around it. Because of the way that the observations are made and the complexity of the objects’ orbits, “it would be really, really difficult to disentangle,” she says. “The interpretation of a black hole is more interesting, but also may not be correct.”

from Tips By Frank https://www.sciencenews.org/article/black-hole-closest-earth-may-have-been-spotted

[365tomorrows]

"How Much?"

“How Much?”

Author: Lynn Finger

“How much to fix this glitch?” I said.

“You can’t afford it,” he tossed back.

We were suspended in our respective amplifications, parked in an enabled space elevator made from light. We were formed and holding in the black expanse, our talk focused by the radios in our helmets. I, waiting to join the mines of a meteor near V616 Mon. He, on break from whatever con he was…

[admiral70]

If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting. Black holes are clumps of matter so dense that light cannot escape. Pairs of black holes, each several times the mass of our Sun, have recently been found to merge by detection of unusual gravitational radiation. The regions surrounding supermassive black holes in the centers of galaxies can light up as stars that near them get shredded. The closest known black hole to the Earth is V616 Mon, which is about 3,300 light years away. The best way for our monster friend to stay safe, the video informs, is to not go too close. via NASA https://ift.tt/2nhrA1r

[jcp-johncarlo]

If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting. Black holes are clumps of matter so dense that light cannot escape. Pairs of black holes, each several times the mass of our Sun, have recently been found to merge by detection of unusual gravitational radiation. The regions surrounding supermassive black holes in the centers of galaxies can light up as stars that near them get shredded. The closest known black hole to the Earth is V616 Mon, which is about 3,300 light years away. The best way for our monster friend to stay safe, the video informs, is to not go too close. Astronomy Picture of the Day via NASA https://ift.tt/2nhrA1r

[whyisthenightsosad]

Black Hole Safety Video

If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting. Black holes are clumps of matter so dense that light cannot escape. Pairs of black holes, each several times the mass of our Sun, have recently been found to merge by detection of unusual gravitational radiation. The regions surrounding supermassive black holes in the centers of galaxies can light up as stars that near them get shredded. The closest known black hole to the Earth is V616 Mon, which is about 3,300 light years away. The best way for our monster friend to stay safe, the video informs, is to not go too close. October 01, 2019 from NASA https://ift.tt/2nhrA1r via IFTTT

[cyhnews]

Black Hole Safety Video

If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting. Black holes are clumps of matter so dense that light cannot escape. Pairs of black holes, each several times the mass of our Sun, have recently been found to merge by detection of unusual gravitational radiation. The regions surrounding supermassive black holes in the centers of galaxies can light up as stars that near them get shredded. The closest known black hole to the Earth is V616 Mon, which is about 3,300 light years away. The best way for our monster friend to stay safe, the video informs, is to not go too close. October 01, 2019 from NASA https://ift.tt/2nhrA1r via IFTTT

[krrw2020]

Black Hole Safety Video

If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting. Black holes are clumps of matter so dense that light cannot escape. Pairs of black holes, each several times the mass of our Sun, have recently been found to merge by detection of unusual gravitational radiation. The regions surrounding supermassive black holes in the centers of galaxies can light up as stars that near them get shredded. The closest known black hole to the Earth is V616 Mon, which is about 3,300 light years away. The best way for our monster friend to stay safe, the video informs, is to not go too close. October 01, 2019 from NASA | https://apod.nasa.gov/apod/ap191001.html

[motivationnonstop-blog]

Let's talk about Black Holes ..

Now the first black hole was discovered by Karl Schwarzschild in 1916. That's why one important attribute about black holes is named after this man known as the Schwarzschild radius .

Any thing , having been compressed less than it's Schwarzschild radius can technically become a black hole. For e.g. the Schwarzschild radius of an aeroplane would be less than that of a nanometer or the Schwarzschild radius of the entire earth would be about a peanut.

At that time the density of any matter would be so strong that nothing , not even light , could escape it.How do we prove it ? Escape velocity ! Escape velocity of any celestial body is the minimum velocity required to break free of the planet's gravitational force. On putting the values in the escape velocity formula for a black hole we get the value to be equal to 'c'. i.e. 2.9 x 10^8 m/s. Now since this is the fastest speed available for any matter , nothing can escape a black hole. But unlike everyone else statements a black hole doesn't just directly suck us we are near it. It sucks us when we are very near it. A star on the verge of it's destruction sometimes becomes a black hole . The radius of the black hole is very small than that of it's parent star . Now, if we get too close too a black hole to the point where it starts to suck us in , we are way inside the parent start's radius . If we put a black hole of the same mass in place of the sun , the solar system would exist and behave in the same way as it is now. Just it would be a lot darker.

Now , we haven't seen any black hole till upclose . So, how do we know that it exists?

Well black holes give a radiations which leak into space and can be detected by our scopes.

1.Can black holes live forever?

Nope. Black holes evaporate by a phenomenon known as Hawking radiation. It is a very slow process though. It might take billions of years for a black hole to die of Hawking radiation.

2.What is the largest black hole discovered ?

On December 5, 2011, astronomers discovered the largest supermassive black hole in the nearby universe yet found, that of the supergiant elliptical galaxy NGC 4889, with a mass of 2.1×1010 (21 billion) M ☉ at a distance of 336 million light-years away in the Coma Berenices constellation.

3.Is there a black hole near us / is Earth in danger of being destroyed by a black hole?

The closest black hole we know of is V616 Monocerotis, also known as V616 Mon. It's located about 3,000 light years away, and has between 9-13 times the mass of the Sun.

So, we can say with confidence that we are in no danger of being destroyed by a black hole.

4.What the hell is a singularity?

In the center of a black hole is a gravitationalsingularity, a one-dimensional point which contains a huge mass in an infinitely small space, where density and gravity become infinite and space-time curves infinitely, and where the laws of physics as we know them cease to operate.