73 citations · 332 across the 16 of their papers we have counts for
18 papers
Kinematically Resolving the Fe K Complex in Her X-1: The Accretion Disk and Ionized Wind Across X-ray Eclipses
Koh Sakamoto, Teruaki Enoto, Peter Kosec +8
We present XRISM/Resolve spectroscopy of Her X-1 across three X-ray eclipses observed in September 2024, resolving its iron K complex through the ingress, mid-eclipse, and egress p…
XRISM finds the Changing-Look AGN NGC 1365 in an extended low state: A dense, highly ionized outflow obscures the central source
Fatima Zaidouni, Erin Kara, Peter Kosec +21
We present the first XRISM/Resolve observations of the active galactic nucleus, NGC 1365, obtained in 2024 February and July. NGC 1365 is known for rapid transitions between Compto…
A Deep Chandra View of Abell 2597: Bubbles, Shocks, Cold Fueling, and a Plasma Depletion Layer
Osase Omoruyi, Grant Tremblay, Stefi A. Baum +14
To examine how AGN feedback shapes the intracluster medium (ICM) and fuels black hole accretion in the cool-core galaxy cluster Abell 2597, we present deep (600 ks) Chandra X…
XRISM constraints on unidentified X-ray emission lines, including the 3.5 keV line, in the stacked spectrum of ten galaxy clusters
XRISM Collaboration, Marc Audard, Hisamitsu Awaki +150
We stack 3.75 Megaseconds of early XRISM Resolve observations of ten galaxy clusters to search for unidentified spectral lines in the 2.5-15 keV band (rest frame), including t…
A Sharper View of the X-ray Spectrum of MCG--6-30-15 with XRISM, XMM-Newton and NuSTAR
Laura W. Brenneman, Daniel R. Wilkins, Anna Ogorzałek +15
We present a time-averaged spectral analysis of the 2024 XRISM observation of the narrow-line Seyfert-1 galaxy MCG--6-30-15, taken contemporaneously with XMM-Newton and NuSTAR. Our…
XRISM/Resolve observations of Hercules X-1: vertical structure and kinematics of the disk wind
Peter Kosec, Laura Brenneman, Erin Kara +11
X-ray binary accretion disk winds can carry away a significant fraction of the matter transferred from the companion and hence strongly affect the accretion flow and the long-term…
XRISM forecast for the Coma cluster: stormy, with a steep power spectrum
XRISM Collaboration, Marc Audard, Hisamitsu Awaki +142
The XRISM Resolve microcalorimeter array measured the velocities of hot intracluster gas at two positions in the Coma galaxy cluster: 3'x3' squares at the center and at 6' (170 kpc…
Chemical enrichment of ICM within the A3266 cluster I: radial profiles
E. Gatuzz, J. Sanders, A. Liu +7
We present a detailed study of the elemental abundances distribution of the intracluster medium (ICM) within the A3266 cluster using {\it XMM-Newton} observations. This analysis us…
Investigating the Ultra-Compact X-ray Binary Candidate SLX 1735-269 with NICER and NuSTAR
David Moutard, Renee Ludlam, Malu Sudha +8
We present two simultaneous NICER and NuSTAR observations of the ultra-compact X-ray binary (UCXB) candidate SLX 1735-269 while the source was in two different spectral states. Usi…
Redshifted iron emission and absorption lines in the Chandra X-ray spectrum of Centaurus A
David Bogensberger, Jon Miller, Elias Kammoun +9
Cen A hosts the closest active galactic nucleus to the Milky Way, which makes it an ideal target for investigating the dynamical processes in the vicinity of accreting supermassive…
Multi-messenger-Athena Synergy White Paper
L. Piro, M. Ahlers, A. Coleiro +30
In this paper we explore the scientific synergies between Athena and some of the key multi-messenger facilities that should be operative concurrently with Athena. These facilities…
Measuring bulk flows of the intracluster medium in the Perseus and Coma galaxy clusters using XMM-Newton
J. S. Sanders, K. Dennerl, H. R. Russell +7
We demonstrate a novel technique for calibrating the energy scale of the XMM EPIC-pn detector, which allows us to measure bulk flows in the intracluster medium (ICM) of the Perseus…
Thermal stability of winds driven by radiation pressure in super-Eddington accretion disks
Ciro Pinto, Missagh Mehdipour, Dom J. Walton +7
Ultraluminous X-ray sources (ULXs) are mainly powered by accretion in neutron stars or stellar-mass black holes. Accreting at rates exceeding the Eddington limit by factors of a fe…
Improved measurements of turbulence in the hot gaseous atmospheres of nearby giant elliptical galaxies
A. Ogorzalek, I. Zhuravleva, S. W. Allen +7
We present significantly improved measurements of turbulent velocities in the hot gaseous halos of nearby giant elliptical galaxies. Using deep XMM-Newton Reflection Grating Spectr…
Exploring the origin of a large cavity in Abell 1795 using deep Chandra observations
S. A. Walker, A. C. Fabian, P. Kosec
We examine deep stacked Chandra observations of the galaxy cluster Abell 1795 (over 700ks) to study in depth a large (34 kpc radius) cavity in the X-ray emission. Curiously, despit…
A relativistically broadened O VIII Lyalpha line in the ultra-compact X-ray binary 4U 0614+091
O. K. Madej, P. G. Jonker, A. C. Fabian +3
Ultra-compact X-ray binaries consist of a neutron star or black hole that accretes material from a white dwarf-donor star. The ultra-compact nature is expressed in very short orbit…
X-rays from Clusters of Galaxies
A. C. Fabian, S. W. Allen
The X-ray emission from clusters of galaxies enables them to be used as good cosmological probes and as an example for massive galaxy formation. The gas mass fraction in clusters s…
ASCA observations of the iron K complex of Circinus X-1 near zero phase: spectral evidence for partial covering
W. N. Brandt, A. C. Fabian, T. Dotani +4
We report on ASCA energy spectra of Cir X-1 taken near its zero phase on 1994 August 4-5. The ASCA SIS detectors allow a more detailed study of the iron K complex than has been pos…