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Researchers discover a blazar-like narrow-line Seyfert 1 galaxy

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Researchers discover a blazar-like narrow-line Seyfert 1 galaxy

Post by Dragon on Mon Jan 22, 2018 7:57 pm

Researchers have identified a new blazar-like narrow-line Seyfert 1 galaxy that emits gamma-ray radiation. The new galaxy, designated SDSS J211852.96−073227.5, could offer insights into formation and evolution of jets of radiation produced by massive galactic central black holes. The findings are reported January 11 in a paper published on arXivorg.

Narrow-line Seyfert 1 (NLS1) galaxies are a class of active galactic nuclei (AGN) that have all the properties of type 1 Seyfert galaxies, but show peculiar characteristic like narrow Balmer lines, strong Fe II emission, and extreme properties in the X-rays.

Astronomers and astrophysicists are specially interested in the radio-loud (RL) NLS1 galaxies, which usually showcase a compact radio morphology with a one-sided core-jet structure. Previous studies indicate that some RL NLS1, due to their blazar-like characteristics, produce relativistic jets—beams of ionized matter accelerated close to the speed of light.

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Re: Researchers discover a blazar-like narrow-line Seyfert 1 galaxy

Post by Dragon on Mon Jan 22, 2018 7:58 pm


Credit: Yang et al., 2018.

R band SDSS image of J2118-0732.

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Re: Researchers discover a blazar-like narrow-line Seyfert 1 galaxy

Post by Dragon on Mon Jan 22, 2018 7:59 pm



Studying new RL NLS1s could help us improve our knowledge about complex phenomena like relativistic jets as the process of their formation and evolution is still not well understood.

 

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