학술논문
Observational Signatures of AGN Feedback in the Morphology and the Ionization States of Milky Way-like Galaxies
Document Type
Working Paper
Author
Qutob, Nadia; Emami, Razieh; Su, Kung-Yi; Smith, Randall; Hernquist, Lars; Triani, Dian P.; Hummels, Cameron; Fielding, Drummond; Hopkins, Philip F.; Somerville, Rachel S.; Ballantyne, David R.; Vogelsberger, Mark; Tremblay, Grant; Steiner, James F.; Finkbeiner, Douglas; Narayan, Ramesh; Park, Minjung; Grindlay, Josh; Natarajan, Priyamvada; Hayward, Christopher C.; Kereš, Dušan; Ponnada, Sam B.; Belli, Sirio; Davies, Rebecca; Maheson, Gabriel; Bugiani, Letizia; Li, Yijia
Source
Subject
Language
Abstract
We make an in-depth analysis of different AGN jet models' signatures, inducing quiescence in galaxies with a halo mass of $10^{12} M_\odot$. Three jet models, including cosmic ray-dominant, hot thermal, and precessing kinetic jets, are studied at two energy flux levels each, compared to a jet-free, stellar feedback-only simulation. We examine the distribution of Mg II, O VI, and O VIII ions, alongside gas temperature and density profiles. Low-energy ions, like Mg II, concentrate in the ISM, while higher energy ions, e.g., O VIII, prevail at the AGN jet cocoon's edge. High-energy flux jets display an isotropic ion distribution with lower overall density. High-energy thermal or cosmic ray jets pressurize at smaller radii, significantly suppressing core density. The cosmic ray jet provides extra pressure support, extending cool and warm gas distribution. A break in the ion-to-mass ratio slope in O VI and O VIII is demonstrated in the ISM-to-CGM transition (between 10-30 kpc), growing smoothly towards the CGM at greater distances.
Comment: 17 pages, 13 figures
Comment: 17 pages, 13 figures