Weighing Little Red Dots with Transient Events

arXiv:2609.00113 · astro-ph.GA, astro-ph.HE · Submitted 2026-08-31 · Read on arXiv

astro-ph.GA, astro-ph.HE

Submitted: 2026-08-31

Updated: 2026-08-31

Code: https://github.com/vinh-qtran/TidalDisruptionLRD

Terminology

• Core — 9× in this paper · explained in 2 episodes
• Little Red Dots — 4× in this paper · explained in 2 episodes
• AGN — 3× in this paper · explained in 1 episode
• Abundance — 2× in this paper · explained in 1 episode
• Degeneracy — 2× in this paper · explained in 3 episodes
• Little Red Dots (LRDs) — 2× in this paper · explained in 3 episodes
• Mass Segregation — 2× in this paper · explained in 2 episodes
• Metallicity — 1× in this paper · explained in 3 episodes
• Milky Way — 1× in this paper
• Roman Space Telescope — 1× in this paper
• Selection Bias — 1× in this paper · explained in 4 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• A PANORAMIC of UV-optical morphologies of "Little Red Dots": Two groups of LRDs distinguished by UV half-light radius
• RX J1420.4+5334 - another tidal disruption event?
• Little Red Dots host Black Hole Stars: A unified family of gas-reddened AGN revealed by JWST/NIRSpec spectroscopy
• The quasi-star model for Little Red Dots: potential and challenges
• GREX-PLUS Science Book
• Spatial decomposition of Little Red Dots with JWST/NIRSpec IFU into broad-line red cores and narrow-line blue host galaxies
• Through the Veil: Ly$\alpha$ Illuminates the Host Galaxies of Little Red Dots
• The $M_{\rm BH}-M_{*}$ Relationship at $3<z<7$: Big Black Holes in Little Red Dots
• A direct black hole mass measurement in a Little Red Dot at the Epoch of Reionization
• Tidal disruption event rates across cosmic time: forecasts for LSST, Roman, and JWST and their constraints on the supermassive black hole mass function
• The giant X-ray outbursts in NGC 5905 and IC 3599: Follow-up observations and outburst scenarios
• Discovery of a giant and luminous X-ray outburst from the optically inactive galaxy pair RXJ1242.6-1119
• Euclid Definition Study Report
• How I Wonder What You Are -- JWST's Little Red Dots do not TWINKLE
• Non-LTE atmosphere models of very luminous sources and their applicability to Little Red Dots, quasi-stars, and similar objects
• A "Black Hole Star" Reveals the Remarkable Gas-Enshrouded Hearts of the Little Red Dots
• Little Red Dots as Intermediate Mass, Super-Eddington Engines: Insights from Type IIn Supernovae and The 1837-1856 Great Eruption of eta Carinae
• Little Red Dots: One Photometric Tag Concealing Diverse Spectroscopic Flavors of Massive Star Formation and Black Hole Activity
• A Reference Survey for Supernova Cosmology with the Nancy Grace Roman Space Telescope
• Massive Black Holes Seeded by Dark Matter -- Implications for Little Red Dots and Gravitational Wave Signatures

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• MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies