Merger Response of Halo Anisotropy Properties

Wang, Kuan; Mansfield, Philip; Anbajagane, Dhayaa; Avestruz, Camille

doi:10.3847/1538-4357/ada4aa

Title: Merger Response of Halo Anisotropy Properties

Journal Article · 28 January 2025 · The Astrophysical Journal

DOI: https://doi.org/10.3847/1538-4357/ada4aa · OSTI ID:2507346

^[1];

^[2];

^[3];

^[4]

The University of Michigan, Ann Arbor, MI (United States); The University of Texas, Austin, TX (United States)
Stanford University, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
University of Chicago, IL (United States)
The University of Michigan, Ann Arbor, MI (United States)

Anisotropy properties—halo spin, shape, position offset, velocity offset, and orientation—are an important family of dark matter halo properties that indicate the level of directional variation of the internal structures of halos. These properties reflect the dynamical state of halos, which in turn depends on the mass assembly history. In this work, we study the evolution of anisotropy properties in response to merger activity using the IllustrisTNG simulations. We find that the response trajectories of the anisotropy properties significantly deviate from secular evolution. These trajectories have the same qualitative features and timescales across a wide range of merger and host properties. We propose explanations for the behavior of these properties and connect their evolution to the relevant stages of merger dynamics. We measure the relevant dynamical timescales. We also explore the dependence of the strength of the response on time of merger, merger ratio, and mass of the main halo. These results provide insight into the physics of halo mergers and their effects on the statistical behavior of halo properties. This study paves the way toward a physical understanding of scaling relations, particularly to how systematics in their scatter are connected to the mass assembly histories of halos.

View Journal Article

Cite

Export

Save

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Science (SC); USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-76SF00515; SC0019193

OSTI ID:: 2507346

Journal Information:: The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 2 Vol. 979; ISSN 0004-637X

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

References (83)

Formation of galaxies and large-scale structure with cold dark matter Blumenthal, George R.; Faber, S. M.; Primack, Joel R. Nature, Vol. 311, Issue 5986 https://doi.org/10.1038/311517a0	journal	October 1984
Profiles of dark haloes: evolution, scatter and environment Bullock, J. S.; Kolatt, T. S.; Sigad, Y. Monthly Notices of the Royal Astronomical Society, Vol. 321, Issue 3 https://doi.org/10.1046/j.1365-8711.2001.04068.x	journal	March 2001
Populating a cluster of galaxies - I. Results at \fontshape{it}{z}=0 Springel, Volker; White, Simon D. M.; Tormen, Giuseppe Monthly Notices of the Royal Astronomical Society, Vol. 328, Issue 3 https://doi.org/10.1046/j.1365-8711.2001.04912.x	journal	December 2001
Planck 2013 results. XVI. Cosmological parameters Ade, P. A. R.; Aghanim, N.; Armitage-Caplan, C. Astronomy & Astrophysics, Vol. 571 https://doi.org/10.1051/0004-6361/201321591	journal	October 2014
Astropy: A community Python package for astronomy Robitaille, Thomas P.; Tollerud, Erik J.; Greenfield, Perry Astronomy & Astrophysics, Vol. 558 https://doi.org/10.1051/0004-6361/201322068	journal	September 2013
Planck 2015 results : XIII. Cosmological parameters Ade, P. A. R.; Aghanim, N.; Arnaud, M. Astronomy & Astrophysics, Vol. 594 https://doi.org/10.1051/0004-6361/201525830	journal	September 2016
Planck 2018 results: VI. Cosmological parameters Aghanim, N.; Akrami, Y.; Ashdown, M. Astronomy & Astrophysics, Vol. 641, A6 https://doi.org/10.1051/0004-6361/201833910	journal	September 2020
A 2163: Merger events in the hottest Abell galaxy cluster: I. Dynamical analysis from optical data Maurogordato, S.; Cappi, A.; Ferrari, C. Astronomy & Astrophysics, Vol. 481, Issue 3 https://doi.org/10.1051/0004-6361:20077614	journal	February 2008
The evolution of large-scale structure in a universe dominated by cold dark matter Davis, M.; Efstathiou, G.; Frenk, C. S. The Astrophysical Journal, Vol. 292 https://doi.org/10.1086/163168	journal	May 1985
A Universal Density Profile from Hierarchical Clustering Navarro, Julio F.; Frenk, Carlos S.; White, Simon D. M. The Astrophysical Journal, Vol. 490, Issue 2 https://doi.org/10.1086/304888	journal	December 1997
Statistical Properties of X‐Ray Clusters: Analytic and Numerical Comparisons Bryan, Greg L.; Norman, Michael L. The Astrophysical Journal, Vol. 495, Issue 1 https://doi.org/10.1086/305262	journal	March 1998
Concentrations of Dark Halos from Their Assembly Histories Wechsler, Risa H.; Bullock, James S.; Primack, Joel R. The Astrophysical Journal, Vol. 568, Issue 1 https://doi.org/10.1086/338765	journal	March 2002
The Origin of Angular Momentum in Dark Matter Halos Vitvitska, Maya; Klypin, Anatoly A.; Kravtsov, Andrey V. The Astrophysical Journal, Vol. 581, Issue 2 https://doi.org/10.1086/344361	journal	December 2002
Shapes and Alignments of Galaxy Cluster Halos Kasun, S. F.; Evrard, A. E. The Astrophysical Journal, Vol. 629, Issue 2 https://doi.org/10.1086/430811	journal	August 2005
The Robustness of Dark Matter Density Profiles in Dissipationless Mergers Kazantzidis, Stelios; Zentner, Andrew R.; Kravtsov, Andrey V. The Astrophysical Journal, Vol. 641, Issue 2 https://doi.org/10.1086/500579	journal	April 2006
The Alignment of Dark Matter Halos with the Cosmic Web Patiri, Santiago G.; Cuesta, Antonio J.; Prada, Francisco The Astrophysical Journal, Vol. 652, Issue 2 https://doi.org/10.1086/510330	journal	November 2006
The Causes of Halo Shape Changes Induced by Cooling Baryons: Disks versus Substructures Debattista, Victor P.; Moore, Ben; Quinn, Thomas The Astrophysical Journal, Vol. 681, Issue 2 https://doi.org/10.1086/587977	journal	July 2008
The spin and Orientation of dark Matter Halos Within Cosmic Filaments Zhang, Youcai; Yang, Xiaohu; Faltenbacher, Andreas The Astrophysical Journal, Vol. 706, Issue 1 https://doi.org/10.1088/0004-637X/706/1/747	journal	November 2009
Constraints on the Relationship Between Stellar mass and halo mass at low and high Redshift Moster, Benjamin P.; Somerville, Rachel S.; Maulbetsch, Christian The Astrophysical Journal, Vol. 710, Issue 2 https://doi.org/10.1088/0004-637X/710/2/903	journal	January 2010
What do dark Matter halo Properties tell us About Their mass Assembly Histories? Wong, Anson W. C.; Taylor, James E. The Astrophysical Journal, Vol. 757, Issue 1 https://doi.org/10.1088/0004-637X/757/1/102	journal	September 2012
The Cosmic History of the spin of dark Matter Halos Within the Large-Scale Structure Trowland, Holly E.; Lewis, Geraint F.; Bland-Hawthorn, Joss The Astrophysical Journal, Vol. 762, Issue 2 https://doi.org/10.1088/0004-637X/762/2/72	journal	December 2012
Dependence of the Outer Density Profiles of Halos on Their mass Accretion rate Diemer, Benedikt; Kravtsov, Andrey V. The Astrophysical Journal, Vol. 789, Issue 1 https://doi.org/10.1088/0004-637X/789/1/1	journal	June 2014
Clash: Weak-Lensing Shear-And-Magnification Analysis of 20 Galaxy Clusters Umetsu, Keiichi; Medezinski, Elinor; Nonino, Mario The Astrophysical Journal, Vol. 795, Issue 2 https://doi.org/10.1088/0004-637X/795/2/163	journal	October 2014
On Determining the Shape of Matter Distributions Zemp, Marcel; Gnedin, Oleg Y.; Gnedin, Nickolay Y. The Astrophysical Journal Supplement Series, Vol. 197, Issue 2 https://doi.org/10.1088/0067-0049/197/2/30	journal	November 2011
Alignment between galaxies and large-scale structure Faltenbacher, A.; Li, Cheng; White, Simon D. M. Research in Astronomy and Astrophysics, Vol. 9, Issue 1 https://doi.org/10.1088/1674-4527/9/1/004	journal	January 2009
The Size-Virial Radius Relation of Galaxies Kravtsov, Andrey V. The Astrophysical Journal, Vol. 764, Issue 2 https://doi.org/10.1088/2041-8205/764/2/L31	journal	February 2013
Core condensation in heavy halos: a two-stage theory for galaxy formation and clustering White, S. D. M.; Rees, M. J. Monthly Notices of the Royal Astronomical Society, Vol. 183, Issue 3 https://doi.org/10.1093/mnras/183.3.341	journal	July 1978
Concentrations of dark haloes emerge from their merger histories Wang, Kuan; Mao, Yao-Yuan; Zentner, Andrew R. Monthly Notices of the Royal Astronomical Society, Vol. 498, Issue 3 https://doi.org/10.1093/mnras/staa2733	journal	September 2020
The three causes of low-mass assembly bias Mansfield, Philip; Kravtsov, Andrey V. Monthly Notices of the Royal Astronomical Society, Vol. 493, Issue 4 https://doi.org/10.1093/mnras/staa430	journal	February 2020
Observed structural parameters of EAGLE galaxies: reconciling the mass–size relation in simulations with local observations de Graaff, Anna; Trayford, James; Franx, Marijn Monthly Notices of the Royal Astronomical Society, Vol. 511, Issue 2 https://doi.org/10.1093/mnras/stab3510	journal	December 2021
MultiCAM: a multivariable framework for connecting the mass accretion history of haloes with their properties Mendoza, Ismael; Mansfield, Philip; Wang, Kuan Monthly Notices of the Royal Astronomical Society, Vol. 523, Issue 4 https://doi.org/10.1093/mnras/stad1768	journal	June 2023
Haunted haloes: tracking the ghosts of subhaloes lost by halo finders Diemer, Benedikt; Behroozi, Peter; Mansfield, Philip Monthly Notices of the Royal Astronomical Society, Vol. 533, Issue 4 https://doi.org/10.1093/mnras/stae2007	journal	August 2024
Evidence for spin alignment of spiral and elliptical/S0 galaxies in filaments Tempel, E.; Stoica, R. S.; Saar, E. Monthly Notices of the Royal Astronomical Society, Vol. 428, Issue 2 https://doi.org/10.1093/mnras/sts162	journal	November 2012
Cosmic web alignments with the shape, angular momentum and peculiar velocities of dark matter haloes Forero-Romero, Jaime E.; Contreras, Sergio; Padilla, Nelson Monthly Notices of the Royal Astronomical Society, Vol. 443, Issue 2 https://doi.org/10.1093/mnras/stu1150	journal	July 2014
The EAGLE project: simulating the evolution and assembly of galaxies and their environments Schaye, Joop; Crain, Robert A.; Bower, Richard G. Monthly Notices of the Royal Astronomical Society, Vol. 446, Issue 1 https://doi.org/10.1093/mnras/stu2058	journal	November 2014
Orbital parameters of infalling satellite haloes in the hierarchical ΛCDM model Jiang, Lilian; Cole, Shaun; Sawala, Till Monthly Notices of the Royal Astronomical Society, Vol. 448, Issue 2 https://doi.org/10.1093/mnras/stv053	journal	February 2015
Dark matter halo properties of GAMA galaxy groups from 100 square degrees of KiDS weak lensing data Viola, M.; Cacciato, M.; Brouwer, M. Monthly Notices of the Royal Astronomical Society, Vol. 452, Issue 4 https://doi.org/10.1093/mnras/stv1447	journal	August 2015
The merger rate of galaxies in the Illustris simulation: a comparison with observations and semi-empirical models Rodriguez-Gomez, Vicente; Genel, Shy; Vogelsberger, Mark Monthly Notices of the Royal Astronomical Society, Vol. 449, Issue 1 https://doi.org/10.1093/mnras/stv264	journal	March 2015
A unified model for the spatial and mass distribution of subhaloes Han, Jiaxin; Cole, Shaun; Frenk, Carlos S. Monthly Notices of the Royal Astronomical Society, Vol. 457, Issue 2 https://doi.org/10.1093/mnras/stv2900	journal	February 2016
The mass–concentration–redshift relation of cold and warm dark matter haloes Ludlow, Aaron D.; Bose, Sownak; Angulo, Raúl E. Monthly Notices of the Royal Astronomical Society, Vol. 460, Issue 2 https://doi.org/10.1093/mnras/stw1046	journal	May 2016
Spin flips – II. Evolution of dark matter halo spin orientation, and its correlation with major mergers Bett, Philip E.; Frenk, Carlos S. Monthly Notices of the Royal Astronomical Society, Vol. 461, Issue 2 https://doi.org/10.1093/mnras/stw1395	journal	June 2016
Halo and subhalo demographics with Planck cosmological parameters: Bolshoi–Planck and MultiDark–Planck simulations Rodríguez-Puebla, Aldo; Behroozi, Peter; Primack, Joel Monthly Notices of the Royal Astronomical Society, Vol. 462, Issue 1 https://doi.org/10.1093/mnras/stw1705	journal	July 2016
MultiDark simulations: the story of dark matter halo concentrations and density profiles Klypin, Anatoly; Yepes, Gustavo; Gottlöber, Stefan Monthly Notices of the Royal Astronomical Society, Vol. 457, Issue 4 https://doi.org/10.1093/mnras/stw248	journal	February 2016
The bahamas project: calibrated hydrodynamical simulations for large-scale structure cosmology McCarthy, Ian G.; Schaye, Joop; Bird, Simeon Monthly Notices of the Royal Astronomical Society, Vol. 465, Issue 3 https://doi.org/10.1093/mnras/stw2792	journal	October 2016
Statistics of dark matter substructure – I. Model and universal fitting functions Jiang, Fangzhou; van den Bosch, Frank C. Monthly Notices of the Royal Astronomical Society, Vol. 458, Issue 3 https://doi.org/10.1093/mnras/stw439	journal	February 2016
On the shape of dark matter haloes from MultiDark Planck simulations Vega-Ferrero, Jesús; Yepes, Gustavo; Gottlöber, Stefan Monthly Notices of the Royal Astronomical Society, Vol. 467, Issue 3 https://doi.org/10.1093/mnras/stx282	journal	February 2017
First results from the IllustrisTNG simulations: the galaxy colour bimodality Nelson, Dylan; Pillepich, Annalisa; Springel, Volker Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 1 https://doi.org/10.1093/mnras/stx3040	journal	November 2017
First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies Pillepich, Annalisa; Nelson, Dylan; Hernquist, Lars Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 1 https://doi.org/10.1093/mnras/stx3112	journal	December 2017
First results from the IllustrisTNG simulations: matter and galaxy clustering Springel, Volker; Pakmor, Rüdiger; Pillepich, Annalisa Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 1 https://doi.org/10.1093/mnras/stx3304	journal	December 2017
First results from the IllustrisTNG simulations: radio haloes and magnetic fields Marinacci, Federico; Vogelsberger, Mark; Pakmor, Rüdiger Monthly Notices of the Royal Astronomical Society https://doi.org/10.1093/mnras/sty2206	journal	August 2018
Tidal stripping and post-merger relaxation of dark matter haloes: causes and consequences of mass-loss Lee, Christoph T.; Primack, Joel R.; Behroozi, Peter Monthly Notices of the Royal Astronomical Society, Vol. 481, Issue 3 https://doi.org/10.1093/mnras/sty2538	journal	September 2018
First results from the IllustrisTNG simulations: a tale of two elements – chemical evolution of magnesium and europium Naiman, Jill P.; Pillepich, Annalisa; Springel, Volker Monthly Notices of the Royal Astronomical Society, Vol. 477, Issue 1 https://doi.org/10.1093/mnras/sty618	journal	March 2018
IPython: A System for Interactive Scientific Computing Perez, Fernando; Granger, Brian E. Computing in Science & Engineering, Vol. 9, Issue 3 https://doi.org/10.1109/MCSE.2007.53	journal	January 2007
Matplotlib: A 2D Graphics Environment Hunter, John D. Computing in Science & Engineering, Vol. 9, Issue 3 https://doi.org/10.1109/MCSE.2007.55	journal	January 2007
The NumPy Array: A Structure for Efficient Numerical Computation van der Walt, Stéfan; Colbert, S. Chris; Varoquaux, Gaël Computing in Science & Engineering, Vol. 13, Issue 2 https://doi.org/10.1109/MCSE.2011.37	journal	March 2011
The evolution of the dark halo spin parameters λ and λ′ in a ΛCDM universe: the role of minor and major mergers Hetznecker, Helmut; Burkert, Andreas Monthly Notices of the Royal Astronomical Society, Vol. 370, Issue 4 https://doi.org/10.1111/j.1365-2966.2006.10616.x	journal	July 2006
Halo assembly bias and its effects on galaxy clustering Croton, D. J.; Gao, L.; White, S. D. M. Monthly Notices of the Royal Astronomical Society, Vol. 374, Issue 4 https://doi.org/10.1111/j.1365-2966.2006.11230.x	journal	February 2007
The hierarchical formation of the brightest cluster galaxies De Lucia, G.; Blaizot, J. Monthly Notices of the Royal Astronomical Society, Vol. 375, Issue 1 https://doi.org/10.1111/j.1365-2966.2006.11287.x	journal	February 2007
Concentration, spin and shape of dark matter haloes: scatter and the dependence on mass and environment Maccio, A. V.; Dutton, A. A.; Van Den Bosch, F. C. Monthly Notices of the Royal Astronomical Society, Vol. 378, Issue 1 https://doi.org/10.1111/j.1365-2966.2007.11720.x	journal	June 2007
A statistical study of weak lensing by triaxial dark matter haloes: consequences for parameter estimation: Weak lensing by triaxial dark matter haloes Corless, Virginia L.; King, Lindsay J. Monthly Notices of the Royal Astronomical Society, Vol. 380, Issue 1 https://doi.org/10.1111/j.1365-2966.2007.12018.x	journal	August 2007
The evolution of dark matter halo properties in clusters, filaments, sheets and voids Hahn, Oliver; Carollo, C. Marcella; Porciani, Cristiano Monthly Notices of the Royal Astronomical Society, Vol. 381, Issue 1 https://doi.org/10.1111/j.1365-2966.2007.12249.x	journal	September 2007
The statistics of CDM halo concentrations Neto, A. F.; Gao, L.; Bett, P. Monthly Notices of the Royal Astronomical Society, Vol. 381, Issue 4 https://doi.org/10.1111/j.1365-2966.2007.12381.x	journal	November 2007
Angular momentum-large-scale structure alignments in ΛCDM models and the SDSS Paz, Dante J.; Stasyszyn, Federico; Padilla, Nelson D. Monthly Notices of the Royal Astronomical Society, Vol. 389, Issue 3 https://doi.org/10.1111/j.1365-2966.2008.13655.x	journal	September 2008
On halo formation times and assembly bias Li, Yun; Mo, H. J.; Gao, L. Monthly Notices of the Royal Astronomical Society, Vol. 389, Issue 3 https://doi.org/10.1111/j.1365-2966.2008.13667.x	journal	September 2008
Concentration, spin and shape of dark matter haloes as a function of the cosmological model: WMAP 1, WMAP 3 and WMAP 5 results Macciò, Andrea V.; Dutton, Aaron A.; van den Bosch, Frank C. Monthly Notices of the Royal Astronomical Society, Vol. 391, Issue 4 https://doi.org/10.1111/j.1365-2966.2008.14029.x	journal	December 2008
Resolving cosmic structure formation with the Millennium-II Simulation Boylan-Kolchin, Michael; Springel, Volker; White, Simon D. M. Monthly Notices of the Royal Astronomical Society, Vol. 398, Issue 3 https://doi.org/10.1111/j.1365-2966.2009.15191.x	journal	September 2009
E pur si muove: Galilean-invariant cosmological hydrodynamical simulations on a moving mesh Springel, Volker Monthly Notices of the Royal Astronomical Society, Vol. 401, Issue 2 https://doi.org/10.1111/j.1365-2966.2009.15715.x	journal	January 2010
The angular momentum of cold dark matter haloes with and without baryons Bett, Philip; Eke, Vincent; Frenk, Carlos S. Monthly Notices of the Royal Astronomical Society https://doi.org/10.1111/j.1365-2966.2010.16368.x	journal	February 2010
The redshift evolution of Λ cold dark matter halo parameters: concentration, spin and shape: Halo parameters: mass and redshift dependence Muñoz-Cuartas, J. C.; Macciò, A. V.; Gottlöber, S. Monthly Notices of the Royal Astronomical Society, Vol. 411, Issue 1 https://doi.org/10.1111/j.1365-2966.2010.17704.x	journal	October 2010
The shape of dark matter haloes in the Aquarius simulations: evolution and memory: The shape of the Aquarius dark matter haloes Vera-Ciro, Carlos A.; Sales, Laura V.; Helmi, Amina Monthly Notices of the Royal Astronomical Society, Vol. 416, Issue 2 https://doi.org/10.1111/j.1365-2966.2011.19134.x	journal	July 2011
The dynamical state of dark matter haloes in cosmological simulations - I. Correlations with mass assembly history Power, Chris; Knebe, Alexander; Knollmann, Steffen R. Monthly Notices of the Royal Astronomical Society, Vol. 419, Issue 2 https://doi.org/10.1111/j.1365-2966.2011.19820.x	journal	October 2011
The dynamical state and mass–concentration relation of galaxy clusters: The concentrations of massive galaxy clusters Ludlow, Aaron D.; Navarro, Julio F.; Li, Ming Monthly Notices of the Royal Astronomical Society, Vol. 427, Issue 2 https://doi.org/10.1111/j.1365-2966.2012.21892.x	journal	November 2012
The age dependence of halo clustering Gao, L.; Springel, V.; White, S. D. M. Monthly Notices of the Royal Astronomical Society: Letters, Vol. 363, Issue 1 https://doi.org/10.1111/j.1745-3933.2005.00084.x	journal	October 2005
Angular distribution of satellite galaxies from the Sloan Digital Sky Survey Data Release 4 Azzaro, M.; Patiri, S. G.; Prada, F. Monthly Notices of the Royal Astronomical Society: Letters, Vol. 376, Issue 1 https://doi.org/10.1111/j.1745-3933.2007.00282.x	journal	March 2007
The correlation structure of dark matter halo properties: Correlations of dark matter halo properties Jeeson-Daniel, Akila; Vecchia, Claudio Dalla; Haas, Marcel R. Monthly Notices of the Royal Astronomical Society: Letters, Vol. 415, Issue 1 https://doi.org/10.1111/j.1745-3933.2011.01081.x	journal	June 2011
The Connection Between Galaxies and Their Dark Matter Halos Wechsler, Risa H.; Tinker, Jeremy L. Annual Review of Astronomy and Astrophysics, Vol. 56, Issue 1 https://doi.org/10.1146/annurev-astro-081817-051756	journal	September 2018
Small-Scale Challenges to the Λ CDM Paradigm Bullock, James S.; Boylan-Kolchin, Michael Annual Review of Astronomy and Astrophysics, Vol. 55, Issue 1 https://doi.org/10.1146/annurev-astro-091916-055313	journal	August 2017
The IllustrisTNG simulations: public data release Nelson, Dylan; Springel, Volker; Pillepich, Annalisa Computational Astrophysics and Cosmology, Vol. 6, Issue 1 https://doi.org/10.1186/s40668-019-0028-x	journal	May 2019
Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of ∼5000 Companions Price-Whelan, Adrian M.; Hogg, David W.; Rix, Hans-Walter The Astronomical Journal, Vol. 156, Issue 1 https://doi.org/10.3847/1538-3881/aac387	journal	June 2018
Testing for X-Ray–SZ Differences and Redshift Evolution in the X-Ray Morphology of Galaxy Clusters Nurgaliev, D.; McDonald, M.; Benson, B. A. The Astrophysical Journal, Vol. 841, Issue 1 https://doi.org/10.3847/1538-4357/aa6db4	journal	May 2017
Relating the Structure of Dark Matter Halos to Their Assembly and Environment Chen, Yangyao; Mo, H. J.; Li, Cheng The Astrophysical Journal, Vol. 899, Issue 1 https://doi.org/10.3847/1538-4357/aba597	journal	August 2020
The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package* The Astrophysical Journal, Vol. 935, Issue 2 https://doi.org/10.3847/1538-4357/ac7c74	journal	August 2022
symfind : Addressing the Fragility of Subhalo Finders and Revealing the Durability of Subhalos Mansfield, Philip; Darragh-Ford, Elise; Wang, Yunchong The Astrophysical Journal, Vol. 970, Issue 2 https://doi.org/10.3847/1538-4357/ad4e33	journal	July 2024

Similar Records

Concentrations of dark haloes emerge from their merger histories

Journal Article · 2020 · Monthly Notices of the Royal Astronomical Society · OSTI ID:1665918

Wang, Kuan; Mao, Yao-Yuan; Zentner, Andrew R.; +3 more

DARK MATTER HALO MERGERS: DEPENDENCE ON ENVIRONMENT

Journal Article · 2010 · Astrophysical Journal · OSTI ID:21448747

Hester, J A; Tasitsiomi, A

Asymmetric velocity anisotropies in remnants of collisionless mergers

Journal Article · 2012 · Journal of Cosmology and Astroparticle Physics · OSTI ID:22280050

Sparre, Martin

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Cosmology
Dynamical evolution
Galaxy dark matter halos
Hydrodynamical simulations

Title: Merger Response of Halo Anisotropy Properties

Citation Formats

References (83)

Similar Records

Related Subjects