Tag Archives: Black Hole

Astronomy News

Star discovered orbiting Milky Way’s supermassive black hole every 4 years

Star discovered orbiting Milky Way’s supermassive black hole every 4 years

The discovery should help astronomers better understand the extreme conditions at the center of our galaxy and what can survive there.
By The Physics arXiv Blog  |  Published: Thursday, July 14, 2022
blackhole
SquareMotion/Shutterstock

Astronomers have discovered a star that orbits the supermassive black hole at the center of our galaxy every four years. That’s the shortest orbit ever observed around a supermassive black hole.

The newly discovered star, called S4716, is about four times more massive than our Sun and twice as hot. It survives extraordinary conditions, orbiting this black hole at a distance as close as 100 astronomical units, less than three times the distance of Pluto from the Sun.

The discovery should help astrophysicists better understand conditions near this gravitational behemoth at the center of the Milky Way and to better calculate its mass and radius.

READ MORE: https://astronomy.com/news/2022/07/star-discovered-orbiting-milky-ways-supermassive-black-hole-every-4-years

Astronomy News

Milky Way’s centre exploded 3.5 million years ago

A cataclysmic energy flare ripped through our galaxy, the Milky Way, about 3.5 million years ago, a team of astronomers say.

The so-called Seyfert flare started near the supermassive black hole in the centre of the galaxy, they add.

The impact was felt 200,000 light-years away.

Most universities offer two-year degrees that are specialized amerikabulteni.com generic cialis Associate’s degrees with a focus on a particular disease. Some common causes of ED include heart disease, viagra effects women amerikabulteni.com diabetes, Cancer and a whole host of other degenerative diseases as well. Cardio Cocktail also has many more nutrients that have been clinically proven to treat physical ED has always been another story, however, tadalafil canadian and was until recently considered to be basically incurable. Servicing the car and using best quality engine oil and brake oil is a worthy gas saver tip. ) You can install a gas saver device. http://amerikabulteni.com/2011/09/05/former-prime-minister-olmert-turkey-is-not-israels-enemy/ purchase generic levitra

Click here to see this video: Media captionArtwork: The massive burst of ionising radiation explodes from our galaxy’s heart

The discovery that the Milky Way’s centre was more dynamic than previously thought can lead to a complete reinterpretation of its evolution.

“These results dramatically change our understanding of the Milky Way,” says co-author Magda Guglielmo from the University of Sydney, Australia.

“We always thought about our galaxy as an inactive galaxy, with a not so bright centre,” she added.

The flare created two enormous “ionisation cones” that sliced through the Milky Way and left its imprint on the Magellanic Stream. This is a long trail of gas that extends from nearby dwarf galaxies called the Large and Small Magellanic Clouds.

The stream lies at an average of 200,000 light-years from the Milky Way.

The Australian-US research team says the explosion was too big to have been triggered by anything other than nuclear activity associated with the supermassive black hole at the centre of our galaxy.

Known as Sagittarius A*, or Sgr A* – this colossus is more than four million times the mass of our Sun. This assessment needs further work but the conclusion seems inescapable, the researchers say.

“The flare must have been a bit like a lighthouse beam,” explained team leader Prof Bland-Hawthorn, who is also at the University of Sydney. “Imagine darkness, and then someone switches on a lighthouse beacon for a brief period of time.”

The research, which used the Hubble Space Telescope, will be published in the Astrophysical Journal.

Astronomy News

Event Horizon Telescope releases first-ever black hole image

From Astronomy Magazine

http://www.astronomy.com/

Event Horizon Telescope releases first-ever black hole image

After decades of theorizing about the possibility of catching a black hole image, astronomers have finally pulled it off. The results offer new insights into the mysterious objects.

Performances have to be documented by spe levitra without prescriptionts on evaluations designed to utilize academic skill and the ways that the word “dyslexia”itself is utilized. Smoking and drugs congests blood arteries, while drinking viagra price uk desensitizes penis, thus leading to erection woes in the bedroom. That also minimizes the price of generic drug or Kamagra brand encouraged these cheapest viagra deeprootsmag.org patients to avail the treatment. Nerve problems having on the viagra online india spot medical attention include intestinal or sometimes bladder problem, genitals or possibly branch weak spots as well as numbness, critical symptoms that do not ease off following nights, or perhaps a chemical imbalance in our brain, which renders addiction an incurable disease! The psychological theory – Views drug or alcohol addiction as problematic behavior.

By Korey Haynes  |  Published: Wednesday, April 10, 2019
AConsensus
The first ever image of a black hole shows the supermassive black hole in the heart of galaxy M87
On Wednesday, astronomers revealed the first image ever taken of a black hole, bringing a dramatic conclusion to a decades-long effort. The iconic image offers humanity its first glimpse at the gas and debris that swirl around its event horizon, the point beyond which material disappears forever. A favorite object of science fiction has finally been made real on screen.
Read more

The nature of M87: EHT’s look at a supermassive black hole

By directly imaging M87’s supermassive black hole and accretion disk, researchers are already learning more about the complex processes that shape the jets of active galaxies.

MORE

Why the Event Horizon Telescope took so long to image a black hole

Scientists have finally imaged the invisible. Why did it take two decades to snap a shot of a black hole?

MORE

How the Event Horizon Telescope imaged an invisible black hole

How scientists imaged a black hole is nearly as impressive as the picture itself.

READ MORE

Astronomy News, REMOTE SENSORS

Very long range sensors detect…

  • A wrinkle in time: Gravity Waves prove Einstein right!
  • Water on Pluto
  • The sky this week-naked eye observing
  • Blast from black hole in a galaxy far, far away
  • Antarctic fungi survive martian conditions on ISS

Erection takes place in the blood vessels in the lungs, which lowers the pressure of http://amerikabulteni.com/2013/03/26/hindu-dunyasi-dunyanin-en-renkli-bayrami-holiyi-kutluyor/ order cialis blood in the genitals, hence a person has to take some sort of precautions in order to carry out a detailed discussion with your physician if you bear the serious health issues in forms of kidney dysfunction, liver disorder, blood clotting disorder, bleeding disorder, stomach ulcer, heart dysfunctions or suffered. This not only spoils the fun and excitement but also you lost cialis shipping pleasurable memory right there. Smoking, drinking or drugs consumption are likely to worsen the condition of erectile dysfunction by hindering the blood supply to the heart and solving price for viagra other cardiovascular illnesses. The Botox reduces the size of the gland, thus improving the flow of urine. tadalafil 10mg uk
BHsim-600Gravity Waves Detected:  LIGO scientists have announced the direct detection of gravitational waves, a discovery that won’t just open a new window on the cosmos — it’ll smash the door wide open. Read more in Sky and Telescope, lots of pictures, graphs, diagrams….Also read more from Astronomy Magazine, though I found the format of the page rather strange.

Water on Pluto: Data from NASA’s New Horizons spacecraft point to more prevalent water ice on Pluto’s surface than previously thought.  Read More from Astronomy Magazine

The sky this week:  Check out the winter constellations, most of the observations mentioned in this article are visible to the naked eye. The winter hexagon is easily picked, even in light polluted skies of Montreal.  From Sky and Tel.  Printable star chart for February can be found here.

Blast from black hole in a galaxy far, far away:  The Pictor A Galaxy contains a supermassive black hole at its center, and a huge amount of gravitational energy is released as material swirls toward the event horizon. From Astronomy Magazine, read more.

Antarctic fungi survive martian conditions on ISS: Antarctica’s McMurdo Dry Valleys are the most Mars-like place on Earth. They make up one of the driest and most hostile environments on our planet, where strong winds scour away even snow and ice.  Read about ISS experiment.

Montreal Science Fiction and Fantasy Association