A Unified Dark-matter-driven Relativistic Bondi Route to Black Hole Growth from Stellar to Supermassive Scales
學年 114
學期 2
出版（發表）日期 2026-04-17
作品名稱 A Unified Dark-matter-driven Relativistic Bondi Route to Black Hole Growth from Stellar to Supermassive Scales
作品名稱（其他語言）
著者 Chian-Shu Chen; Feng-Li Lin
單位
出版者
著錄名稱、卷期、頁數 The Astrophysical Journal Letters 1001(2), p.39
摘要 Observations of luminous quasars at z ≳ 7 reveal supermassive black holes (SMBHs) with inferred masses MBH ∼ 109 M⊙ formed within the first ∼700 Myr of cosmic history. Standard growth channels—Eddington-limited gas accretion and hierarchical mergers—face severe timescale restrictions. We consider a super-Eddington accretion mechanism aided by the Bondi accretion of a minimal model of self-interacting dark matter (SIDM). We demonstrate that in a critical regime with a near-relativistic sound speed, Bondi accretion yields an accretion rate that depends only on the SIDM mass m, thus it is universal across the ambient environment. This critical accretion mechanism for m ≳ 10−2 eV can grow seeds as small as 10 M⊙ primordial black holes (PBHs) in the early Universe into 109–1010 M⊙ SMBHs by z ∼ 7 without fine-tuned environments. Therefore, given a mass distribution of PBHs and a value of m, the mass function of primary black holes at late time can be fully determined with masses ranging from stellar to SMBHs. This connects the microscopic physics of dark matter to astrophysical observations of black holes.
關鍵字
語言 en
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129669 )