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Detection of an Extended Lyα Halo around a z = 6.64 Broad Absorption Line Quasar with the Keck Cosmic Web Imager

  • Authors: Raymond P. Remigio, Aaron J. Barth, Feige Wang, Jinyi Yang, Joseph F. Hennawi, Ryan J. Cooke, Eduardo Bañados, Xiaohui Fan, Emanuele Paolo Farina

Raymond P. Remigio et al 2026 The Astrophysical Journal Letters 1003 .

  • Provider: AAS Journals

Caption: Figure 3.

Radial surface brightness profile of the extended emission (blue points). The radial bins are logarithmically spaced, with the horizontal error bars spanning an entire bin. The shaded gray regions represent the 1σ (dark gray) and 2σ (light gray) noise levels measured over 9750–9780 Å. The PSF profile (FWHM = 1﹩\mathop{.}\limits^{^{\prime\prime} }﹩0) is plotted as a red dashed line.

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