The collision velocity of the bullet cluster in conventional and modified dynamics

G. W. Angus; S. S. McGaugh

doi:10.1111/j.1365-2966.2007.12403.x

The collision velocity of the bullet cluster in conventional and modified dynamics

G. W. Angus, S. S. McGaugh

Physics & Astronomy

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

We consider the orbit of the bullet cluster 1E 0657-56 in both cold dark matter (CDM) and Modified Newtonian Dynamics (MOND) using accurate mass models appropriate to each case in order to ascertain the maximum plausible collision velocity. Impact velocities consistent with the shock velocity (∼ 4700 km s^-1) occur naturally in MOND. CDM can generate collision velocities of at most ∼3800 km s^-1, and is only consistent with the data, provided that the shock velocity has been substantially enhanced by hydrodynamical effects.

Original language	English
Pages (from-to)	417-423
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	383
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2966.2007.12403.x
Publication status	Published - Jan 2008

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1111/j.1365-2966.2007.12403.x

Cite this

@article{5c8c1e8389364ff0b783d01799ddcf29,

title = "The collision velocity of the bullet cluster in conventional and modified dynamics",

abstract = "We consider the orbit of the bullet cluster 1E 0657-56 in both cold dark matter (CDM) and Modified Newtonian Dynamics (MOND) using accurate mass models appropriate to each case in order to ascertain the maximum plausible collision velocity. Impact velocities consistent with the shock velocity (∼ 4700 km s-1) occur naturally in MOND. CDM can generate collision velocities of at most ∼3800 km s-1, and is only consistent with the data, provided that the shock velocity has been substantially enhanced by hydrodynamical effects.",

author = "Angus, {G. W.} and McGaugh, {S. S.}",

year = "2008",

month = jan,

doi = "10.1111/j.1365-2966.2007.12403.x",

language = "English",

volume = "383",

pages = "417--423",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "2",

}

TY - JOUR

T1 - The collision velocity of the bullet cluster in conventional and modified dynamics

AU - Angus, G. W.

AU - McGaugh, S. S.

PY - 2008/1

Y1 - 2008/1

N2 - We consider the orbit of the bullet cluster 1E 0657-56 in both cold dark matter (CDM) and Modified Newtonian Dynamics (MOND) using accurate mass models appropriate to each case in order to ascertain the maximum plausible collision velocity. Impact velocities consistent with the shock velocity (∼ 4700 km s-1) occur naturally in MOND. CDM can generate collision velocities of at most ∼3800 km s-1, and is only consistent with the data, provided that the shock velocity has been substantially enhanced by hydrodynamical effects.

AB - We consider the orbit of the bullet cluster 1E 0657-56 in both cold dark matter (CDM) and Modified Newtonian Dynamics (MOND) using accurate mass models appropriate to each case in order to ascertain the maximum plausible collision velocity. Impact velocities consistent with the shock velocity (∼ 4700 km s-1) occur naturally in MOND. CDM can generate collision velocities of at most ∼3800 km s-1, and is only consistent with the data, provided that the shock velocity has been substantially enhanced by hydrodynamical effects.

UR - http://www.scopus.com/inward/record.url?scp=37849049946&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37849049946&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2966.2007.12403.x

DO - 10.1111/j.1365-2966.2007.12403.x

M3 - Article

AN - SCOPUS:37849049946

SN - 0035-8711

VL - 383

SP - 417

EP - 423

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

The collision velocity of the bullet cluster in conventional and modified dynamics

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this