Speaker
Description
Filaments connecting galaxy clusters appear to contain the vast majority of the ‘missing baryons’ in the form of a warm-hot intergalactic medium (WHIM) gas and are expected to emit a diffuse soft X-ray signal. Utilizing eROSITA’s sensitivity in the soft X-ray band, down to 0.2 keV, along with its wide field of view, raster scanning, and stable background, we are able to characterize this diffuse signal. Data from the eROSITA performance verification observations of the Abell 3391/3395 field have previously been analyzed to constrain the properties of three separate filamentary connections between clusters. However, extracting filamentary gas temperatures and densities from spectral fits to the eROSITA data is challenging, and has limited these analyses. We thus aim to combine the eROSITA data with thermal Sunyaev-Zeldovich (SZ) measurements from Planck and SPT to better probe the density and temperature distributions of the filamentary gas in this system. I will present an update on this analysis, including initial estimates on parameter constraints and remaining tasks.
| Would you be interested in presenting a poster if the conference is oversubcribed? | Yes |
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