Unveiling the Cosmic Dawn with SHARP: Probing extended Lyman- alpha nebulae in a Universe less than 600 Myr old

arXiv:2606.31917 · astro-ph.GA, astro-ph.IM · Submitted 2026-06-30 · Read on arXiv

Susanna Bisogni, Giustina Vietri, Enrico Piconcelli, Federica Ricci, Andrea Travascio, Paolo Franzetti, Adriana Gargiulo, Chiara Mancini

astro-ph.GA, astro-ph.IM

Submitted: 2026-06-30

Comments: 9 pages, 1 figure, accepted for publication in New Astronomy as part of the SHARP Science Book

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• AGN — 23× in this paper · explained in 1 episode
• alpha — 5× in this paper · explained in 1 episode
• Benchmark — 4× in this paper · explained in 2 episodes
• AGN Feedback — 3× in this paper · explained in 1 episode
• Abundance — 2× in this paper · explained in 1 episode
• Active Galactic Nuclei (AGN) — 1× in this paper · explained in 1 episode
• Aperture — 1× in this paper · explained in 1 episode
• Entrainment — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Metallicity — 1× in this paper · explained in 3 episodes
• Velocity Dispersion — 1× in this paper · explained in 2 episodes

Sources

• The Stacked Lyman-Alpha Emission Profile from the Circum-Galactic Medium of z~2 Quasars
• Deep HeII and CIV Spectroscopy of a Giant Lyman alpha Nebula: Dense Compact Gas Clumps in the Circumgalactic Medium of a z~2 Quasar
• QSO MUSEUM I: A sample of 61 extended Ly$\alpha$-emission nebulae surrounding $z\sim3$ quasars
• Inspiraling Halo Accretion Mapped in Lyman-$\alpha$ Emission around a $z\sim3$ Quasar
• Entrainment of Hot Gas into Cold Streams: The Origin of Excessive Star-formation Rates at Cosmic Noon
• An 800-million-solar-mass black hole in a significantly neutral Universe at redshift 7.5
• The fundamental signature of star formation quenching from AGN feedback: A critical dependence of quiescence on supermassive black hole mass not accretion rate
• Ubiquitous giant Ly $\alpha$ nebulae around the brightest quasars at $z\sim3.5$ revealed with MUSE
• JADES NIRSpec Spectroscopy of GN-z11: Lyman-$\alpha$ emission and possible enhanced nitrogen abundance in a $z=10.60$ luminous galaxy
• Evolution of the Cool Gas in the Circumgalactic Medium (CGM) of Massive Halos -- A Keck Cosmic Web Imager (KCWI) Survey of Ly$\alpha$ Emission around QSOs at $z\approx2$
• A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar
• Fluorescent Ly-alpha emission from the high-redshift intergalactic medium
• JWST spectroscopy of $z\sim 5-8$ UV-selected galaxies: New constraints on the evolution of the Ly$\alpha$ escape fraction in the reionization era
• The Role of Black Hole Feedback on Size and Structural Evolution in Massive Galaxies
• AGN-driven outflows and the formation of Ly$\alpha$ nebulae around high-z quasars
• The environment of bright QSOs at z ~ 6: Star forming galaxies and X-ray emission
• The quenching and morphological evolution of central galaxies is facilitated by the feedback-driven expulsion of circumgalactic gas
• A VLT/FORS2 view at $z\sim6$: Lyman-$\alpha$ emitter fraction and galaxy physical properties at the edge of the epoch of cosmic reionization
• An ALMA [CII] survey of 27 quasars at z>5.94
• Cold streams in early massive hot haloes as the main mode of galaxy formation

Related papers

• Apparent Stability in Self-Gravitating Turbulence and the Evolution of Molecular Clouds
• Two sets of potential-density basis pairs for the study of radial perturbations in collisionless spherical stellar systems
• Constraining reionization-era Ly alpha escape with JELS-MUSE: a highly complete H alpha-selected sample at z about6.1
• Deriving volume density profiles of filaments from observed surface densities
• Little Red Dots and Supermassive Black Hole Seed Formation in Ultralight Dark Matter Halos
• MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies