activity
20182026
most citedLine Emission Mapper (LEM): Probing the physics of cosmic ecosystems

46 citations · 177 across the 21 of their papers we have counts for

collaborators

21 papers

astro-ph.GA2026

Diagnosing the Fe line complex of the intracluster medium by XRISM high-resolution spectroscopy

K. Fukushima, L. Hirata, N. Y. Yamasaki +17

We aim to test the validity of the CIE framework in the ICM by performing line diagnostics based mainly on resolved Fe-K emission lines. Methods. We analyse Resolve full-array spec…

astro-ph.HE2026

Science of High Resolution X-ray Imaging

H. L. Marshall, K. Weaver, M. Schattenburg +34

This report summarizes potential studies of the Hi-ReX Science Analysis Group for an Ultra-High Angular Resolution X-ray Observatory. Many potential science cases are presented, sp…

astro-ph.HE2025★ 3 cited

The Advanced X-ray Imaging Satellite (AXIS) Community Science Book

Michael Koss, Nafisa Aftab, Steven W. Allen +395

The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…

astro-ph.GA2025★ 8 cited

The Nineteenth Data Release of the Sloan Digital Sky Survey

SDSS Collaboration, Gautham Adamane Pallathadka, Mojgan Aghakhanloo +210

Mapping the local and distant Universe is key to our understanding of it. For decades, the Sloan Digital Sky Survey (SDSS) has made a concerted effort to map millions of celestial…

astro-ph.GA2025

Constraints on Non-Thermal Pressure at galaxy cluster outskirts from a Joint SPT and XMM-Newton Analysis

Arnab Sarkar, Michael McDonald, Lindsey Bleem +11

We present joint South Pole Telescope (SPT) and XMM-Newton observations of 8 massive galaxy clusters (0.8--1.710 M) spanning a redshift range of 0.16 to 0.…

astro-ph.HE2024★ 2 cited

Physics of 1 keV line in X-ray binaries

Priyanka Chakraborty, Gary Ferland, Andrew Fabian +5

X-ray binaries (XRBs) often exhibit spectral residuals in the 0.5 to 2 keV range, known as the ``1 keV residual/1 keV feature", with variable centroid and intensity across differen…

astro-ph.HE2024★ 1 cited

Active Galaxy Science with the Line Emission Mapper: The Case for High-Resolution Soft X-ray Spectroscopy

Kimberly A. Weaver, Jenna M. Cann, Ryan W. Pfeifle +11

This white paper discusses the breadth of science related to active galactic nuclei (AGN) and associated phenomena to be enabled by a mission with microcalorimeter energy resolutio…

astro-ph.HE2024

On the Particle Acceleration Mechanisms in a Double Radio Relic Galaxy Cluster, Abell 1240

Arnab Sarkar, Felipe Andrade-Santos, Reinout J. van Weeren +12

We present a 368 ks deep Chandra observation of Abell~1240, a binary merging galaxy cluster at a redshift of 0.195 with two Brightest Cluster Galaxies (BCGs) may have passed each o…

astro-ph.GA2023★ 3 cited

Exploring chemical enrichment of the intracluster medium with the Line Emission Mapper

François Mernier, Yuanyuan Su, Maxim Markevitch +27

Synthesized in the cores of stars and supernovae, most metals disperse over cosmic scales and are ultimately deposited well outside the gravitational potential of their host galaxi…

astro-ph.HE2023

Mapping the Intracluster Medium in the Era of High-resolution X-ray Spectroscopy

Congyao Zhang, Irina Zhuravleva, Maxim Markevitch +24

High-resolution spectroscopy in soft X-rays will open a new window to map multiphase gas in galaxy clusters and probe physics of the intracluster medium (ICM), including chemical e…

astro-ph.HE2023

Probing extreme black-hole outflows on short timescales via high spectral-resolution X-ray imagers

Ciro Pinto, James F. Steiner, Arash Bodaghee +7

We investigate outflows and the physics of super-Eddington versus sub-Eddington regimes in black hole systems. Our focus is on prospective science using next-generation high-resolu…

astro-ph.GA2023★ 29 cited

X-ray metal line emission from the hot circumgalactic medium: probing the effects of supermassive black hole feedback

Nhut Truong, Annalisa Pillepich, Dylan Nelson +15

We derive predictions from state-of-the-art cosmological galaxy simulations for the spatial distribution of the hot circumgalactic medium (CGM, ) through its…

astro-ph.GA2023★ 3 cited

The 2023 release of Cloudy

Marios Chatzikos, Stefano Bianchi, Francesco Camilloni +8

We describe the 2023 release of the spectral synthesis code Cloudy. Since the previous major release, migrations of our online services motivated us to adopt git as our version con…

astro-ph.GA2023★ 6 cited

Mapping the imprints of stellar and AGN feedback in the circumgalactic medium with X-ray microcalorimeters

Gerrit Schellenberger, Ákos Bogdán, John A. ZuHone +24

The Astro2020 Decadal Survey has identified the mapping of the circumgalactic medium (CGM, gaseous plasma around galaxies) as a key objective. We explore the prospects for characte…

astro-ph.IM2023★ 2 cited

NANCY: Next-generation All-sky Near-infrared Community surveY

Jiwon Jesse Han, Arjun Dey, Adrian M. Price-Whelan +206

The Nancy Grace Roman Space Telescope is capable of delivering an unprecedented all-sky, high-spatial resolution, multi-epoch infrared map to the astronomical community. This oppor…

astro-ph.GA2023★ 19 cited

Resonant scattering of the OVII X-ray emission line in the circumgalactic medium of TNG50 galaxies

Dylan Nelson, Chris Byrohl, Anna Ogorzalek +15

We study the impact of resonantly scattered X-ray line emission on the observability of the hot circumgalactic medium (CGM) of galaxies. We apply a Monte Carlo radiative transfer p…

astro-ph.IM2022★ 46 cited

Line Emission Mapper (LEM): Probing the physics of cosmic ecosystems

Ralph Kraft, Maxim Markevitch, Caroline Kilbourne +107

The Line Emission Mapper (LEM) is an X-ray Probe for the 2030s that will answer the outstanding questions of the Universe's structure formation. It will also provide transformative…

astro-ph.GA2022★ 14 cited

Gas sloshing and cold fronts in pre-merging galaxy cluster Abell 98

Arnab Sarkar, Scott Randall, Yuanyuan Su +10

We present deep Chandra observations of the pre-merger galaxy cluster Abell 98. Abell 98 is a complex merging system. While the northern (A98N) and central subclusters (A98S) are m…

astro-ph.GA2022★ 22 cited

Discovery of a pre-merger shock in an intercluster filament in Abell 98

Arnab Sarkar, Scott Randall, Yuanyuan Su +11

We report the first unambiguous detection of an axial merger shock in the early-stage merging cluster Abell 98 using deep (227 ks) Chandra observations. The shock is about 420 kpc…

astro-ph.HE2022★ 16 cited

X-ray spectroscopy in the microcalorimeter era 4: Optical depth effects on the soft X-rays studied with CLOUDY

Priyanka Chakraborty, Gary Ferland, Marios Chatzikos +4

In this paper, we discuss atomic processes modifying the soft X-ray spectra in from optical depth effects like photoelectric absorption and electron scattering suppressing the soft…

astro-ph.GA2018★ 3 cited

Mean Occupation Function of High Redshift Quasars from the Planck Cluster Catalog

Priyanka Chakraborty, Suchetana Chatterjee, Alankar Dutta +1

We characterise the distribution of quasars within dark matter halos using a direct measurement technique for the first time at redshifts as high as . Using the Planck Su…