X‐ray galaxy cluster studies for astro‐physics and cosmology

Böhringer, H.; Schartel, N.

doi:10.1002/asna.201211886

Cited by 3 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Shaded areas correspond to the parameter regions allowed (at 2σ) by Planck cluster data [7,8] and by extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) [10]. We should also note that earlier results obtained in [9], while in agreement with [10], are even father away from the Planck base ΛCDM model. In DDM model, when F and Γ are varied, σ 8 and Ω m closely follow the line marked DDM in Fig.…”

Section: Decaying Dark Mattermentioning

confidence: 90%

Reconciling Planck results with low redshift astronomical measurements

2015

View full text Add to dashboard Cite

We show that emerging tension between the direct astronomical measurements at low redshifts and cosmological parameters deduced from the Planck measurements of the CMB anisotropies can be alleviated if the dark matter consists of two fractions, stable part being dominant and a smaller unstable fraction. The latter constitutes $\sim 10$ per cent at the recombination epoch if decays by now.Comment: Replaced with the version accepted for publication in Phys. Rev. D, Rapid Communication

show abstract

Section: Decaying Dark Mattermentioning

confidence: 90%

Reconciling Planck results with low redshift astronomical measurements

2015

View full text Add to dashboard Cite

show abstract

“…Allen et al 2011;Böhringer & Schartel 2013). Several hundreds of clusters were discovered in X-rays based on previous X-ray missions mainly from ROSAT data (e.g.…”

Section: Introductionmentioning

confidence: 99%

The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey

Takey

Durret

Mahmoud

et al. 2016

A&A

View full text Add to dashboard Cite

We present a galaxy cluster survey based on XMM-Newton observations that are located in Stripe 82 of the Sloan Digital Sky Survey (SDSS). The survey covers an area of 11.25 deg 2 . The X-ray cluster candidates were selected as serendipitously extended detected sources from the third XMM-Newton serendipitous source catalogue (3XMM-DR5). A cross-correlation of the candidate list that comprises 94 objects with recently published X-ray and optically selected cluster catalogues provided optical confirmations and redshift estimates for about half of the candidate sample. We present a catalogue of X-ray cluster candidates previously known in X-ray and/or optical bands from the matched catalogues or NED. The catalogue consists of 54 systems with redshift measurements in the range of 0.05-1.19 with a median of 0.36. Of these, 45 clusters have spectroscopic confirmations as stated in the matched catalogues. We spectroscopically confirmed another 6 clusters from the available spectroscopic redshifts in the SDSS-DR12. The cluster catalogue includes 17 newly X-ray discovered clusters, while the remainder were detected in previous XMM-Newton and/or ROSAT cluster surveys. Based on the available redshifts and fluxes given in the 3XMM-DR5 catalogue, we estimated the X-ray luminosities and masses for the cluster sample. We also present the list of the remaining X-ray cluster candidates (40 objects) that have no redshift information yet in the literature. Of these candidates, 25 sources are considered as distant cluster candidates beyond a redshift of 0.6. We also searched for galaxy cluster mergers in our cluster sample and found two strong candidates for newly discovered cluster mergers at redshifts of 0.11 and 0.26. The X-ray and optical properties of these systems are presented.

show abstract

“…The advantages of X-ray cluster surveys are first, that they provide almost pure and complete cluster catalogues, and second, that the X-ray observables (temperature and luminosity) correlate tightly with cluster masses (e.g. Allen et al 2011;Böhringer & Schartel 2013). Several hundreds of clusters were discovered in X-rays based on previous X-ray missions mainly from ROSAT data (e.g.…”

Section: Introductionmentioning

confidence: 99%

The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey: Cluster catalogue and discovery of two merging cluster candidates

Takey,

Durret,

Mahmoud

et al. 2016

Preprint

View full text Add to dashboard Cite

We present a galaxy cluster survey based on XMM-Newton observations that are located in Stripe 82 of the Sloan Digital Sky Survey (SDSS). The survey covers an area of 11.25 deg 2 . The X-ray cluster candidates were selected as serendipitously extended detected sources from the third XMM-Newton serendipitous source catalogue (3XMM-DR5). A cross-correlation of the candidate list that comprises 94 objects with recently published X-ray and optically selected cluster catalogues provided optical confirmations and redshift estimates for about half of the candidate sample. We present a catalogue of X-ray cluster candidates previously known in Xray and/or optical bands from the matched catalogues or NED. The catalogue consists of 54 systems with redshift measurements in the range of 0.05-1.19 with a median of 0.36. Of these, 45 clusters have spectroscopic confirmations as stated in the matched catalogues. We spectroscopically confirmed another 6 clusters from the available spectroscopic redshifts in the SDSS-DR12. The cluster catalogue includes 17 newly X-ray discovered clusters, while the remainder were detected in previous XMM-Newton and/or ROSAT cluster surveys. Based on the available redshifts and fluxes given in the 3XMM-DR5 catalogue, we estimated the X-ray luminosities and masses for the cluster sample. We also present the list of the remaining X-ray cluster candidates (40 objects) that have no redshift information yet in the literature. Of these candidates, 25 sources are considered as distant cluster candidates beyond a redshift of 0.6. We also searched for galaxy cluster mergers in our cluster sample and found two strong candidates for newly discovered cluster mergers at redshifts of 0.11 and 0.26. The X-ray and optical properties of these systems are presented.

show abstract

X‐ray galaxy cluster studies for astro‐physics and cosmology

Cited by 3 publications

References 50 publications

Reconciling Planck results with low redshift astronomical measurements

Reconciling Planck results with low redshift astronomical measurements

The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey

The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey: Cluster catalogue and discovery of two merging cluster candidates

Contact Info

Product

Resources

About