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PS1-10jh: Black Hole Caught Red-handed in a Stellar Homicide
PS1-10jh
Visual Description:

  • A star that wandered too close to a supermassive black hole was ripped apart.

  • This discovery was made using NASA's GALEX telescope and the Pan-STARRS1 observatory in Hawaii.

  • Researchers used Chandra data to rule out a competing theory of an active galactic nucleus.

  • The galaxy where this violent act occurred is called PS1-10jh and is located about 2.7 billion light years from Earth.

This computer-simulated image shows gas from a star that is ripped apart by tidal forces as it falls into a black hole. Some of the gas also is being ejected at high speeds into space.

Using observations from telescopes in space and on the ground, astronomers have gathered the most direct evidence yet for this violent process: a supermassive black hole shredding a star that wandered too close. NASA's orbiting Galaxy Evolution Explorer (GALEX) and the Pan-STARRS1 telescope on the summit of Haleakala in Hawaii were used to help to identify the stellar remains.

A flare in ultraviolet and optical light revealed gas falling into the black hole as well as helium-rich gas that was expelled from the system. When the star is torn apart, some of the material falls into the black hole, while the rest is ejected at high speeds. The flare and its properties provide a signature of this scenario and give unprecedented details about the stellar victim.

To completely rule out the possibility of an active nucleus flaring up in the galaxy instead of a star being torn apart, the team used NASA's Chandra X-ray Observatory to study the hot gas. Chandra showed that the characteristics of the gas didn't match those from an active galactic nucleus.

The galaxy where the supermassive black hole ripped apart the passing star in known as PS1-10jh and is located about 2.7 billion light years from Earth. Astronomers estimate the black hole in PS1-10jh has a mass of several million suns, which is comparable to the supermassive black hole in our own Milky Way galaxy.

Visual Description:

The computer-simulated image of the PS1-10jh is a fascinating visual representation that shows gas from a star being ripped apart by tidal forces as it falls into a black hole. Some of the gas also is being ejected at high speeds into space. The image features a bright, orange-colored object with a long, curved shape that resembles a flame or a wavy line. This feature dominates the center of the image and stands out due to its brightness and contrast against the black background. In terms of textures, the orange-colored object has a smooth, fluid-like appearance, as if it were flowing or moving in some way. This texture creates a sense of dynamic movement within the image, even though the object itself is stationary.

 

Fast Facts for PS1-10jh:
Credit  NASA, S. Gezari (The Johns Hopkins University), and J. Guillochon (University of California, Santa Cruz)
Release Date  May 3, 2012
Category  Black Holes
Coordinates (J2000)  RA 16h 09m 28.30s | Dec +53° 40´ 24.20"
Constellation  Draco
Observation Date  22 May 2011
Observation Time  2.8 hours
Obs. ID  13418
Instrument  ACIS
References Gezari et al. Nature, 2012 (published online, May 2, 2012)
arXiv:1205.0252
Distance Estimate  About 2.7 billion light years
distance arrow
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