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Astronomy Picture of the Day
Astronomy Picture of the Day
@apod@reentry.codl.fr  ·  activity timestamp 12 hours ago

NGC 1275 in the Perseus Cluster
Image Credit & Copyright: Michal Wierzbinski, Hellas-Sky

Explanation: Active galaxy NGC 1275 is the central, dominant member of the large and relatively nearby Perseus Cluster of Galaxies. Wild-looking at visible wavelengths, the active galaxy is also a prodigious source of x-rays and radio emission. NGC 1275 accretes matter as entire galaxies fall into it, ultimately feeding a supermassive black hole at the galaxy's core. Narrowband image data used in this sharp telescopic image highlights the resulting galactic debris and filaments of glowing gas, some up to 20,000 light-years long. The filaments persist in NGC 1275, even though the turmoil of galactic collisions should destroy them. What keeps the filaments together? Observations indicate that the structures, pushed out from the galaxy's center by the black hole's activity, are held together by magnetic fields. Also known as Perseus A, NGC 1275 itself spans over 100,000 light years and lies about 230 million light years away.

https://apod.nasa.gov/apod/ap260205.html #apod

Sorry, no caption provided by author
Sorry, no caption provided by author
Sorry, no caption provided by author

Perseus (constellation) - Wikipedia

arXiv.org

Magnetic support of the optical emission line filaments in NGC 1275

The giant elliptical galaxy NGC 1275, at the centre of the Perseus cluster, is surrounded by a well-known giant nebulosity of emission-line filaments, which are plausibly about >10^8 yr old. The filaments are dragged out from the centre of the galaxy by the radio bubbles rising buoyantly in the hot intracluster gas before later falling back. They act as dramatic markers of the feedback process by which energy is transferred from the central massive black hole to the surrounding gas. The mechanism by which the filaments are stabilized against tidal shear and dissipation into the surrounding 4x10^7 K gas has been unclear. Here we report new observations that resolve thread-like structures in the filaments. Some threads extend over 6 kpc, yet are only 70 pc wide. We conclude that magnetic fields in the threads, in pressure balance with the surrounding gas, stabilize the filaments, so allowing a large mass of cold gas to accumulate and delay star formation.

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National Radio Astronomy Observatory

The Science of Radio Astronomy - National Radio Astronomy Observatory

What is Radio Astronomy? This section tackles the basic scientific concepts behind radio astronomy. What are radio waves? What is frequency?
Chandra :: Field Guide to X-ray Astronomy :: History of X-Ray Astronomy

APOD: 2009 May 8 - Galaxies of the Perseus Cluster

A different astronomy and space science related image is featured each day, along with a brief explanation.

APOD: 2026 February 5 - NGC 1275 in the Perseus Cluster

A different astronomy and space science related image is featured each day, along with a brief explanation.

Active galactic nucleus - Wikipedia

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