11 citations · 20 across the 11 of their papers we have counts for
13 papers
Hot off the Stacks: X-rays in Romulus25, Part I - Comparisons to Observations from eRosita
N. Nicole Sanchez, Andrew Benson, Gwen Rudie +7
Recent observations from the from Spectrum Roentgen Gamma (SRG)/eROSITA all-sky survey data have helped to illuminate the hot circumgalactic medium (CGM) around galaxies at Milky W…
The Virgo Cluster as a Case Study for Ancient Cosmic Ray Halos in Radio and X-rays
Philip F. Hopkins, Emily M. Silich, Jack Sayers +2
Virgo is the nearest cool core (CC) galaxy cluster, and is archetypal of the class of X-ray weak CCs. Despite the X-ray continuum implying a large cooling rate ($\gtrsim 10\,{\rm M…
An Inverse-Compton-Boosted Cool Core Unifies Perseus's Radio and X-ray Halos
Philip F. Hopkins, Emily M. Silich, Jack Sayers +2
Perseus is the brightest X-ray strong cool-core (SCC) cluster, with a bright central radio and -ray source plus low-frequency radio mini and giant halos. It is the archetype of…
Observational Implications of Cosmic Ray-Inverse Compton 'Boosted' Cool Cores in Clusters
Philip F. Hopkins, Emily Silich, Jack Sayers +2
X-ray luminous cool-core (CC) galaxy clusters contain powerful cosmic ray (CR) sources. High-energy CRs powering GHz synchrotron lose energy rapidly, but long-lived (~Gyr-old) popu…
Effects of Varied Cosmic Ray Feedback from AGN on Massive Galaxy Properties
Charvi Goyal, Sam B. Ponnada, Philip F. Hopkins +3
Active galactic nuclei (AGN) provide energetic feedback necessary to `turn off' star formation in high-mass galaxies (M 10 M, $10.4 \leq \log(…
Fermi Bubbles Without AGN: Gamma-Ray Bubbles in MHD Galaxy Formation Simulations with Full Cosmic Ray Spectra
Isabel S. Sands, Philip F. Hopkins, Sam B. Ponnada
For the first time, we show in MHD simulations with cosmological initial conditions that bi-lobed gamma-ray outflows similar to the Fermi bubbles can form from star formation and s…
Exploring a Cosmic-Ray Inverse-Compton Origin to the SZ-to-X-Ray Pressure Deficit in the Cool Core Cluster ZwCl 3146
Emily M. Silich, Jack Sayers, Philip F. Hopkins +4
We explore the possibility that inverse-Compton (IC) scattering of cosmic microwave background photons by GeV cosmic rays (CRs) injected by the central active galactic nucleu…
Strong Evidence for Cosmic Ray-Supported L Galaxy Halos via X-ray \& tSZ Constraints
Sam B. Ponnada, Philip F. Hopkins, Yue Samuel Lu +3
Many state-of-the-art galaxy simulations featuring traditional feedback modes have significant challenges producing enough extended soft X-ray ( keV) emission at R $\si…
Galactic Center Gamma-Ray Emission in MHD Galaxy Formation Simulations with Full Cosmic Ray Spectra
Isabel S. Sands, Philip F. Hopkins, Sam B. Ponnada +3
The Milky Way's galactic center is a highly dynamical, crowded environment. Gamma ray observations of this region, such as the excess of GeV scale gamma rays observed by Fermi LAT,…
Cosmic Rays on Galaxy Scales: Progress and Pitfalls for CR-MHD Dynamical Models
Philip F. Hopkins
Recent years have seen many arguments for cosmic rays (CRs) as an important influence on galactic and circumgalactic (CGM) physics, star and galaxy formation. We present a pedagogi…
Cosmic Rays Masquerading as Cool Cores: An Inverse-Compton Origin for Cool Core Cluster Emission
Philip F. Hopkins, Eliot Quataert, Emily M. Silich +3
X-ray bright cool-core (CC) clusters contain luminous radio sources accelerating cosmic ray (CR) leptons at prodigious rates. Near the acceleration region, high-energy leptons prod…
X-ray emission signatures of galactic feedback in the hot circumgalactic medium: predictions from cosmological hydrodynamical simulations
Emily M. Silich, John ZuHone, Elena Bellomi +6
Little is currently known about the physical properties of the hot circumgalactic medium (CGM) surrounding massive galaxies. Next-generation X-ray observatories will enable detaile…
Cosmic Ray Feedback in Massive Halos: Implications for the Distribution of Baryons
Eliot Quataert, Philip F. Hopkins
We use order of magnitude estimates and observational constraints to argue that feedback from relativistic cosmic rays (CRs) produced by massive black holes is likely to have a par…