David Richard Harvey

Publications associées (27)

À propos
Confidentialité
Mentions légales

Graph Chatbot

Observable tests of self-interacting dark matter in galaxy clusters: BCG wobbles in a constant density core

David Richard Harvey, Richard Massey

Models of cold dark matter (CDM) predict that the distribution of dark matter in galaxy clusters should be cuspy, centrally concentrated. Constant density cores would be strong evidence for beyond CDM physics, such as self-interacting dark matter (SIDM). A ...

OXFORD UNIV PRESS2019

Dark matter dynamics in Abell 3827: new data consistent with standard cold dark matter

Frédéric Courbin, David Richard Harvey, Mathilde Jauzac, Rémy Elie Joseph, Richard Massey, Johan Richard

2018

H0LiCOW VIII. A weak-lensing measurement of the external convergence in the field of the lensed quasar HE0435-1223

Frédéric Courbin, Georges Meylan, David Richard Harvey, Vivien François Bonvin, Olga Tihhonova

2018

The shape of galaxy dark matter haloes in massive galaxy clusters: insights from strong gravitational lensing

David Richard Harvey, Mathilde Jauzac, Richard Massey

2018

Growing a 'cosmic beast': observations and simulations of MACS J0717.5+3745

Jean-Paul Richard Kneib, David Richard Harvey, Barney Frederick Drake, Mathilde Jauzac, Matthieu Schaller, Matthew Aaron Robertson, Elena Cristina Dalla Vecchia, Richard Massey

We present a gravitational lensing and X-ray analysis of a massive galaxy cluster and its surroundings. The core of MACS J0717.5+3745 (M(R < 1Mpc) similar to 2 x 10(15) M-circle dot, z = 0.54) is already known to contain four merging components. We show th ...

OXFORD UNIV PRESS2018

The impact of cored density profiles on the observable quantities of dwarf spheroidal galaxies

Yves Revaz, David Richard Harvey, Loïc Hausammann

We modify the chemo-dynamical code GEAR to simulate the impact of self-interacting dark matter (SIDM) on the observable quantities of 19 low-mass dwarf galaxies with a variety star-forming properties. We employ a relatively high, velocity independent cross ...

OXFORD UNIV PRESS2018

Abell 2744: too much substructure for Lambda CDM?

David Richard Harvey, Mathilde Jauzac, Richard Massey

The massive substructures found in Abell 2744 by Jauzac et al. present a challenge to the cold dark matter paradigm due to their number and proximity to the cluster centre. We use one of the biggest N-body simulations, the Millennium XXL, to investigate th ...

Oxford Univ Press2017

Potential Recoiling Supermassive Black Hole, CXO J101527.2+625911

David Richard Harvey

We have carried out a systematic search for recoiling supermassive black holes (rSMBH) using the Chandra Source and SDSS Cross-Match Catalog. From the survey, we have detected a potential rSMBH, CXO J101527.2 +625911, at z = 0.3504. The source CXO J101527. ...

Iop Publishing Ltd2017

Looking for dark matter trails in colliding galaxy clusters

Jean-Paul Richard Kneib, David Richard Harvey, Richard Massey

If dark matter interacts, even weakly, via non-gravitational forces, simulations predict that it will be preferentially scattered towards the trailing edge of the halo during collisions between galaxy clusters. This will temporarily create a non-symmetric ...

Oxford Univ Press2017

A test for skewed distributions of dark matter, and a possible detection in galaxy cluster Abell 3827

Frédéric Courbin, David Richard Harvey, Rémy Elie Joseph, Mathilde Jauzac, Richard Massey

Simulations of self-interacting dark matter predict that dark matter should lag behind galaxies during a collision. If the interaction is mediated by a high-mass force carrier, the distribution of dark matter can also develop asymmetric dark matter tails. ...

Oxford Univ Press2017

Page 2 sur 3