Shaping a Spiral Galaxy – Watts Up With That?


NGC 1068, or M77

Magnetic fields in NGC 1068, or M77, are proven as streamlines over a visual mild and X-ray composite picture of the galaxy from the Hubble House Telescope, NuSTAR or the Nuclear Spectroscopic Array, and the Sloan Digital Sky Survey.

The magnetic fields align alongside the complete size of the large spiral arms — 24,000 mild years throughout (zero.eight kiloparsecs) — implying that the gravitational forces that created the galaxy’s form are additionally compressing the its magnetic area.

This helps the main idea of how the spiral arms are compelled into their iconic form generally known as “density wave idea.” SOFIA, the Stratospheric Observatory for Infrared Astronomy, studied the galaxy utilizing far-infrared mild (89 microns) to disclose sides of its magnetic fields that earlier observations utilizing seen and radio telescopes couldn’t detect.

Study extra: Methods to Form a Spiral Galaxy

Picture Credit score: NASA/SOFIA; NASA/JPL-Caltech/Roma Tre Univ.Final Up to date: Dec. 28, 2020Editor: Yvette Smith

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