homehome Home chatchat Notifications


Black hole in Dragon's belly swallows star and everything goes nutty from here

  The Draco constellation (which is Latin for Dragon) is located at about 3.8 billion light years from Earth; just like every dragon that has at least some common sense, it breathes fire, especially after carelessly eating a nearby star. Rewind. A mysterious cosmic blast in the Draco constellation is causing waves that continue to […]

Mihai Andrei
April 9, 2011 @ 11:09 am

share Share

Plot shows brightness changes recorded by telescopes. Credit: NASA/Swift/Penn State/J. Kennea

 

The Draco constellation (which is Latin for Dragon) is located at about 3.8 billion light years from Earth; just like every dragon that has at least some common sense, it breathes fire, especially after carelessly eating a nearby star.

Rewind. A mysterious cosmic blast in the Draco constellation is causing waves that continue to be observed long after researchers believe they should have stopped. Astronomers are scrambling, trying to find an answer to this puzzling question, but they haven’t been really successful, and nothing seems to explain this unusual situation; instead of the short lived gamma ray explosions that are typically associated with the death of a massive star that last only a few hours, the explosion continues to emit rays more than a week after the event.

This is a visible-light image of GRB 110328A's host galaxy (arrow) taken on April 4 by the Hubble Space Telescope's Wide Field Camera 3. The galaxy is 3.8 billion light-years away. (Credit: NASA/ESA/A. Fruchter - STScI)

 

“We know of objects in our own galaxy that can produce repeated bursts, but they are thousands to millions of times less powerful than the bursts we are seeing now,” said Andrew Fruchter, an astronomer at the Space Telescope Science Institute in Baltimore. “This is truly extraordinary.”

Images from Swift's Ultraviolet/Optical (white, purple) and X-ray telescopes (yellow and red) were combined in this view of GRB 110328A. The blast was detected only in X-rays, which were collected over a 3.4-hour period on March 28. (Credit: NASA/Swift/Stefan Immler)

 

Most galaxies, including our own, have supermassive black holes at their centers, with the mass more than a million times the Sun. But in a big galaxy, like the one we’re talking about, they can be even a thousand times bigger.

“Every spiral galaxy has a black hole at the center of it,” Paul Czysz, professor emeritus of aerospace engineering at St. Louis University, told TechNewsWorld. “At the center of our galaxy, there’s a lot of stars circulating around the black hole at the center of the Milky Way.”

Just like the Sun keeps the planets in our solar system spinning around it, a supermassive black hole does the same for a galaxy, but sometimes, it “chews” on one of the stars closest to it, thus generating the short lived gamma ray bursts I was telling you about earlier. However, this phenomenon could revolutionize researchers’ understanding of how supermassive black holes, which is quite important, considering we have one of them in the very center of the Milky Way.

share Share

Astronomers May Have Discovered The First Rocky Earth-Like World With An Atmosphere, Just 41 Light Years Out

Astronomers may have discovered the first rocky planet with 'air' where life could exist.

Mars Seems to Have a Hot, Solid Core and That's Surprisingly Earth-Like

Using a unique approach to observing marsquakes, researchers propose a structure for Mars' core.

Giant solar panels in space could deliver power to Earth around the clock by 2050

A new study shows space solar panels could slash Europe’s energy costs by 2050.

Frozen Wonder: Ceres May Have Cooked Up the Right Recipe for Life Billions of Years Ago

If this dwarf planet supported life, it means there were many Earths in our solar system.

Astronomers See Inside The Core of a Dying Star For the First Time, Confirm How Heavy Atoms Are Made

An ‘extremely stripped supernova’ confirms the existence of a key feature of physicists’ models of how stars produce the elements that make up the Universe.

Scientists May Have Found a New Mineral on Mars. It Hints The Red Planet Stayed Warm Longer

Scientists trace an enigmatic infrared band to heated, oxygen-altered sulfates.

A Comet That Exploded Over Earth 12,800 Years Ago May Have Triggered Centuries of Bitter Cold

Comet fragments may have sparked Earth’s mysterious 1,400-year cold spell.

Astronomers Find ‘Punctum,’ a Bizarre Space Object That Might be Unlike Anything in the Universe

Bright, polarized, and unseen in any other light — Punctum challenges astrophysical norms.

How Much Has Mercury Shrunk?

Mercury is still shrinking as it cools in the aftermath of its formation; new research narrows down estimates of just how much it has contracted.

First Complete Picture of Nighttime Clouds on Mars

Data captured by the Emirates Mars Mission reveal that clouds are typically thicker during Martian nighttime than daytime.