Pith. sign in

REVIEW 3 cited by

Discovery of a Dissociative Galaxy Cluster Merger with Large Physical Separation

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1110.4391 v2 pith:3AXJUIKV submitted 2011-10-19 astro-ph.CO

William A. Dawson , David Wittman , Myungkook Jee , Perry Gee , John P. Hughes , J. Anthony Tyson , Samuel Schmidt , Paul Thorman
show 5 more authors
Marusa Bradac Satoshi Miyazaki Brian Lemaux Yousuke Utsumi Vera E. Margoniner
This is my paper · ORCID
classification astro-ph.CO
keywords clustermergerdarkdissociativegalaxymatterobservationsobserved
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

We present DLSCL J0916.2+2951 (z=0.53), a newly discovered major cluster merger in which the collisional cluster gas has become dissociated from the collisionless galaxies and dark matter. We identified the cluster using optical and weak lensing observations as part of the Deep Lens Survey. Our follow-up observations with Keck, Subaru, Hubble Space Telescope, and Chandra show that the cluster is a dissociative merger and constrain the dark matter self-interaction cross-section {\sigma}_{DM}m_{DM}^{-1}\leq7 cm^2g^{-1}. The system is observed at least 0.7\pm0.2 Gyr since first pass-through, thus providing a picture of cluster mergers 2-5 times further progressed than similar systems observed to date. This improved temporal leverage has implications for our understanding of merging clusters and their impact on galaxy evolution.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Near-IR Weak-lensing (NIRWL) Measurements in the CANDELS Fields. II. Mass Mapping and Overdensity Characterization

    astro-ph.GA 2026-05 unverdicted novelty 7.0 of 10

    First near-IR weak-lensing analysis of CANDELS fields detects 12 shear-selected overdensities with masses 0.2-2.2 x 10^14 solar masses at redshifts 0.22-0.9 and mean z=0.68.

  2. Discovery and Multi-Wavelength Analysis of a New Dissociative Galaxy Merger: The Champagne Cluster

    astro-ph.CO 2025-01 conditional novelty 6.0 of 10

    The Champagne Cluster is a newly identified post-pericenter galaxy cluster merger near the plane of the sky, with the X-ray gas offset between two galaxy clumps.

  3. Velocity-dependent self-interacting dark matter and composite Higgs

    hep-ph 2024-12 reject novelty 6.0 of 10

    A composite Higgs model in which dark matter mass and a light scalar mediator both arise from hypercolor dynamics, giving velocity-dependent self-interacting dark matter with a claimed viable thermal relic.

Pith tools