Suggested Searches

 

1 min read

Little Red Dot Abell2744-QSO1: Sonification of Gas Velocity Around a Supermassive Black Hole (NIRCam and NIRSpec IFU)

A sonification is a translation of data into sound. In this sonification, the velocity of hydrogen gas moving around a black hole in the center of a Little Red Dot known as Abell2744-QSO1 (QSO1) is translated into sounds of varying pitch (or frequency). The faster the gas is moving toward the telescope, the higher the pitch. The faster it is moving away from the telescope, the lower the pitch.  

Notice how the speed of the gas is highest where it is closest to the black hole. This is characteristic of objects orbiting a central mass (like planets orbiting the Sun): the closer they are, the faster they move.  

Also notice how  the motion of the gas appears to change direction suddenly: The pitch of the sound changes abruptly from high to low. This occurs because the gas is circling the black hole: On the left side of the black hole, the gas is moving toward us. On the right side, it has circled back around and is moving away from us.  

Researchers were able to use the simple relationship between velocity and distance to directly measure the mass of the black hole. This was the first direct mass measurement of a black hole within the first billion years of the universe.  

The velocity measurements were made using data collected using the NIRSpec integral field unit (IFU) on NASA’s James Webb Space Telescope. Explore this observation of QSO1 on Space Telescope Live.  

  • Release Date
    May 27, 2026
  • Science Release
    NASA’s Webb Reveals Black Hole That Formed Before Its Galaxy
    Read the release
  • Credit
    Sonification: NASA, ESA, CSA, STScI, Christopher Britt (STScI), Ralf Crawford (STScI), Alyssa Pagan (STScI), Margaret Carruthers (STScI); Science: Ignas Juodžbalis (Cambridge), Cosimo Marconcini (University of Florence), Roberto Maiolino (Cambridge), Francesco D'Eugenio (Cambridge), Hannah Übler (MPE)

Downloads

  • Video: 1080 × 1920, 30 FPS
    mp4 (105.85 MB)

Related Images & Videos

Space telescope image showing hundreds of bright objects of different size, color, and shape on the black background of space. Colors range from white to deep red. Shapes include elliptical, spiral, dot-like, dash-like, and arcuate. Many of the large objects near the center of the image are fuzzy white, with bright white cores. Many smaller objects scattered throughout the image are pink to red. Three objects in the central part of the image are called out with small white boxes: A box labeled u201cCu201d at about 12 ou2019clock; one labeled u201cBu201d at 3 ou2019clock; and a box labeled u201cAu201d at 4 ou2019clock. Images of the three objects are enlarged in boxes running vertically along the right. From top to bottom these are labeled QSO1A, QSO1B, and QSO1C. At the center of each box is a tiny, circular red dot. QSO1A (top) is notably larger, brighter, and clearer than the other two. QSO1B, in the middle, is smallest and fuzziest, and is somewhat washed out by the light of a larger white object next to it.

Little Red Dot Abell2744-QSO1 (NIRCam Image)

An image from NIRCam on NASA’s James Webb Space Telescope shows Little Red Dot Abell2744-QSO1, magnified and triply imaged by galaxy cluster Abell 2744 (Pandora’s Cluster).

Image at left. Pullout with map on right. Left: Space telescope image labeled QSO1A shows small, red, circular object outlined with white square. Scale bar in bottom left corner labeled 1 arcsecond shows that image is about 4 arcseconds across and object is about 0.4 arcseconds across. Right: Enlarged view of Little Red Dot overlaid with dumbbell-shaped array of pixels ranging in color from blue to orange. Dumbbell shape is vertical, and pixels are oriented at 45 degrees. Below pixels is blue to orange scale bar showing that color of each pixel is related to gas velocity in kilometers per second. Left side of scale bar grades from blue (labeled 20) to gray (labeled 0). Blue arrow pointing left from 0 to 20 beneath left (blue) side of scale bar is labeled toward. Orange arrow pointing right from 0 to 20 beneath the right (orange) side labeled away. Pixels on lower half of dumbbell shape are blue to gray. Most pixels on upper half are orange to gray, but some are blue.

Little Red Dot Abell2744-QSO1a (NIRCam Image with NIRSpec IFU Velocity Map)

An image detail from NIRCam (left) on NASA’s James Webb Space Telescope shows Little Red Dot Abell2744-QSO1. A map of gas velocity in QSO1 (right), made using the IFU on NIRSpec, shows evidence for a 50-million-solar-mass black hole at the center.

Image titled James Webb Space Telescope, Pandorau2019s Cluster, Little Red Dot Abell2744-QSO1 with compass arrows, scale bar, and color key. A deep field image showing objects of different size, color, and shape. Three tiny, red circular objects are called out with small white boxes, and enlarged in pullouts labeled from top to bottom: QSO1A, QSO1B, and QSO1C. In the bottom left corner of the image are compass arrows indicating the orientation of the image on the sky. The east arrow points toward 10 ou2019clock. The north arrow points toward 1 o'clock. At the bottom right corner of the image is a scale bar labeled 15 arcseconds. The image width is about 5.5 times the length of the scale bar. Below the image is a color key showing which NIRCam filters were used to create the image and which visible light color is assigned to each filter. From left to right: F115W (blue), F150W (blue), F200W (green), F277W (green), F356W (red), F444W (red).

Little Red Dot Abell2744-QSO1 (NIRCam Compass Image)

Image of Abell 2744 and Little Red Dot Abell2744-QSO1, captured by Webb’s NIRCam, with compass arrows, scale bar, and color key for reference.

Share

Details

Last Updated
May 27, 2026
Location
NASA Goddard Space Flight Center
Contact
Media

Laura Betz
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
laura.e.betz@nasa.gov

Related Terms

Keep Exploring

Discover More Topics From Webb

James Webb Space Telescope

Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the…

Science Overview

Webb Observatory

Webb Image Galleries