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JWST Discovers 27 Early Quasars, 22% Emit 8,400 km/s Winds

5/14/2026

Summary

Astronomers Uncover Outflows

U.S. astronomers using JWST found 27 quasars a billion years after the Big Bang, six (?22 %) with outflows up to ~8,400 km s?¹ at z ? 5–6.
Radiation pressure drives these winds, ejecting thousands of solar masses of gas and clearing a galaxy’s gas in a few million years.
The authors say the feedback can halt star formation within 100 million years, producing red, quenched massive galaxies and explaining the overmassive supermassive black holes.

Summary

JWST Surveys Quasars

JWST NIRSpec IFU surveys deliver optical spectra of z?5-6 quasars, revealing nuclear and host properties.
The ASPIRE JWST program provides large-scale rest-optical spectroscopy of more than 100 quasars beyond z > 6.5.
Q3D early release science maps ionization cones, clumpy star formation and shocks in a z = 3 red quasar, demonstrating IFU spatial resolution.
New pipelines like the 3D drizzle algorithm for MIRI and NSClean for NIRSpec reduce noise, sharpening faint line detections.

Summary

PyQSOFit Enables Fitting

PyQSOFit, a Python code released in 2018, enables fitting of quasar spectra (Guo, Shen & Wang).
Boroson & Green (1992) compiled emission-line properties of low-redshift quasi-stellar objects.
Vestergaard & Wilkes (2001) derived an empirical ultraviolet iron-emission template from I Zwicky 1.
Shen (2013) provided a comprehensive review of methods for measuring quasar masses.
Vietri et al. (2018) compared broad-line-region winds with kiloparsec-scale outflows in quasars.

History

Historical Context

In 1963 Maarten Schmidt showed that radio source 3C 273 was a distant quasar, establishing quasars as cosmological objects. Surveys such as the Sloan Digital Sky Survey in the 1990s then found quasars at redshift 5, proving supermassive black holes existed within a billion years of the Big Bang. Today JWST’s NIRSpec IFU detects dozens of z?5–6 quasars, contributing to the roughly one-million catalogued.

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Astronomers Uncover Outflows

U.S. astronomers using JWST found 27 quasars a billion years after the Big Bang, six (?22 %) with outflows up to ~8,400 km s?¹ at z ? 5–6.
Radiation pressure drives these winds, ejecting thousands of solar masses of gas and clearing a galaxy’s gas in a few million years.
The authors say the feedback can halt star formation within 100 million years, producing red, quenched massive galaxies and explaining the overmassive supermassive black holes.

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