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MG B2016+112: "X-ray Magnifying Glass" Enhances View of Distant Black Holes
MG B2016+112

  • Astronomers have used an "X-ray magnifying glass" to study a black hole system in the early Universe.

  • The amplification and magnification of light by an intervening galaxy allowed the detection of two distant X-ray-emitting objects.

  • The objects are either two growing supermassive black holes, or one such black hole and a jet.

  • This result helps us understand the growth of black holes in the early Universe and the possible existence of systems with multiple black holes.

A new technique using NASA's Chandra X-ray Observatory has allowed astronomers to obtain an unprecedented look at a black hole system in the early Universe, as reported in our latest press release. This is providing a way for astronomers to look at faint and distant X-ray objects in more detail than had previously been possible.

Astronomers used an alignment in space that shows "gravitational lensing" of light from two objects that are nearly 12 billion light years away. An artist's illustration in the main part of this graphic shows how the paths of light from these distant objects are bent and amplified by a galaxy along the line of sight between Earth and the objects.

Labeled version of main graphic
Illustration: NASA/CXC/M. Weiss; X-ray (inset): NASA/CXC/SAO/D. Schwartz et al.

The objects in this latest Chandra study are part of a system called MG B2016+112. The X-rays detected by Chandra were emitted by this system when the Universe was only 2 billion years old compared to its current age of nearly 14 billion years.

Previous studies of radio emission from MG B2016+112 suggested that the system consisted of two separate supermassive black holes, each of which may also be producing a jet. Using a gravitational lensing model based on the radio data, Schwartz and his colleagues concluded that the three X-ray sources they detected from the MG B2016+112 system must have resulted from the lensing of two distinct objects.

The X-ray light from one of the objects on the left (purple) has been warped by the gravity of the intervening galaxy to produce two beams and X-ray sources ("A" and "B" in a labeled version) detected in the Chandra image, which is represented by the dashed square on the right. The X-ray light from the fainter object (blue) produces an X-ray source ("C") that has been amplified by the galaxy to be as much as 300 times brighter than it would have been without the lensing. The Chandra image is shown in the inset.

These two X-ray-emitting objects are likely a pair of growing supermassive black holes or a growing supermassive black hole and a jet. Previous Chandra measurements of pairs or trios of growing supermassive black holes have generally involved objects much closer to Earth, or with much larger separations between the objects.

A paper describing these results appears in The Astrophysical Journal and a pre-publication version is available at https://arxiv.org/abs/2103.08537. The authors of the study are Dan Schwartz (Center for Astrophysics | Harvard and Smithsonian), Cristiana Spignola (INAF), and Anna Barnacka (CfA).

NASA's Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory's Chandra X-ray Center controls science from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.

 

Fast Facts for MG B2016+112:
Credit  Illustration: NASA/CXC/M. Weiss; X-ray Image (inset): NASA/CXC/SAO/D. Schwartz et al.
Release Date  August 31, 2021
Scale  X-ray image (inset) is about 10 arcsec (250,000 light years) across.
Category  Quasars & Active Galaxies, Black Holes
Constellation  Delphinus
Observation Date  Apr 12, 2000
Observation Time  2 hours 9 minutes
Obs. ID  429
Instrument  ACIS
References Schwartz, D., Spingola, C., and Barnacka, A., 2021, ApJ, 917, 26; arXiv:2103:08537
Color Code  X-ray: Pink
X-ray
Distance Estimate  About 11.8 billion light years (z=3.273)
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