Distinguishing Active Galactic Nuclei Feedback Models with the Thermal Sunyaev-Zel’dovich Effect
Astrophysical Journal, ISSN: 1538-4357, Vol: 957, Issue: 1
2023
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Article Description
Current models of galaxy formation require strong feedback from active galactic nuclei (AGN) to explain the observed lack of star formation in massive galaxies since z ≈ 2, but direct evidence of this energy input is limited. We use the SIMBA cosmological galaxy formation simulations to assess the ability of thermal Sunyaev-Zel’dovich (tSZ) measurements to provide such evidence, by mapping the pressure structure of the circumgalactic medium around massive z ≈ 0.2-1.5 galaxies. We undertake a stacking approach to calculate the total tSZ signal and its radial profile in simulations with varying assumptions of AGN feedback, and we assess its observability with current and future telescopes. By convolving our predictions with the 2.′1 beam of the Atacama Cosmology Telescope, we show that current observations at z ≈ 1 are consistent with SIMBA’s fiducial treatment of AGN feedback and inconsistent with SIMBA models without feedback. At z ≈ 0.5, observational signals lie between SIMBA run with and without AGN feedback, suggesting AGN in SIMBA may inject too much energy at late times. By convolving our data with a 9.″5 beam corresponding to the TolTEC camera on the Large Millimeter Telescope Alfonso Serrano, we predict a unique profile for AGN feedback that can be distinguished with future higher-resolution measurements. Finally, we explore a novel approach to quantify the nonspherically symmetric features surrounding our galaxies by plotting radial profiles representing the component of the stack with m-fold symmetry.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85176210915&origin=inward; http://dx.doi.org/10.3847/1538-4357/acfd26; https://iopscience.iop.org/article/10.3847/1538-4357/acfd26; https://dx.doi.org/10.3847/1538-4357/acfd26; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=a1f2c1da-18d0-4f2f-8c04-8e971ddae6dd&ssb=19603229719&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.3847%2F1538-4357%2Facfd26&ssi=c6bdeabc-cnvj-4bd0-9ea7-4d23c73cdeec&ssk=botmanager_support@radware.com&ssm=6462568998175300377923542128980723&ssn=25205e388d53dba9a3d14dd44519f8a155b1bfa5c2a5-3bc8-4051-8c5965&sso=1dfbe2ef-1734209401ae6dd32521f2cbb1ad828273265babd4acf232&ssp=65422328251724654550172489589206949&ssq=17443361349507101879897749436382412220788&ssr=MzQuMjM2LjI2LjMx&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJfX3V6bWYiOiI3ZjYwMDBkNWUwMmRiOC0xMGZlLTQ2ZWUtYmYzMC04M2YxMTcwMTgwNWUxNzI0Njk3NzQ5MTgwMTE1NzQ1ODk3LTMxZDliZGEzMjkxZTYwMDA3NzkyIiwidXpteCI6IjdmOTAwMGE5ZWYwZjg3LWJjOWUtNDk4Yi05MWU5LTY1MWNhY2NlZjliODMtMTcyNDY5Nzc0OTE4MDExNTc0NTg5Ny05ZmU5Y2RhMTFiYzBkZGI4Nzc4OSJ9
American Astronomical Society
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