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Chandra Reveals Origin of Cosmic Treble Clef

Confirmed

Science Desk

In Short: Astronomers using NASA's Chandra X-ray Observatory have discovered that a cosmic radio wave structure resembling a treble clef is caused by a black hole outburst and galaxy cluster collision.

trebleclef, NASA
NASA / public domain

Astronomers have used NASA's Chandra X-ray Observatory to investigate the cause of a remarkable formation of radio waves they have nicknamed the 'Treble Clef' due to its distinct shape resembling the musical symbol.

The Treble Clef, located almost directly behind the plane of the Milky Way, has been a challenging subject for observation due to the obstruction caused by stars, gas, and dust from our home galaxy.

YouTube — Cosmic Files YouTube

Researchers have determined that the Treble Clef is likely the result of an outburst from a supermassive black hole, followed by a collision of two galaxy clusters.

The collision of these two clusters, which occurred a few hundred million years ago, compressed or re-energised ageing particle clouds, making them brighter in radio waves.

The Treble Clef is a multimillion-degree gas cloud detected in X-rays by Chandra and the German eROSITA X-ray telescope.

The resemblance to a treble clef is a case of pareidolia, the phenomenon where people see familiar shapes in random data.

The new composite image of the Treble Clef and its cluster shows the multimillion-degree gas detected in X-rays by Chandra and eROSITA in blue, with some of the Chandra data derived from a special technique to highlight important features.

The researchers concluded that the Treble Clef likely formed in a two-stage process involving a black hole outburst and the subsequent collision of two galaxy clusters.

The Treble Clef nickname was chosen because the radio source has a distinct shape resembling the musical symbol.

In addition to the Treble Clef, some observers have noted a resemblance to a dragon viewed from the side, another example of pareidolia.

What this adds

The new findings confirm the earlier WarpBeat report on the origin of the cosmic Treble Clef, providing additional details on the process and observations.

The nickname 'Treble Clef' highlights the unique shape of the radio wave structure, which is a result of pareidolia, the tendency to recognize familiar patterns in random data.

The composite image of the Treble Clef and its cluster, showing the multimillion-degree gas detected in X-rays, provides a clearer understanding of the structure's formation and composition.

Background

Astronomers using NASA's Chandra X-ray Observatory have discovered that a cosmic radio wave structure resembling a treble clef is caused by a black hole outburst and galaxy cluster collision.

A clef is a musical symbol used to indicate which notes are represented by the lines and spaces on a musical staff. Placing a clef on a staff assigns a particular pitch to one of the five lines or four spaces, which defines the pitches on the remaining lines and spaces.

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