Dark matter caustics in galaxy clusters

V. Onemli; P. Sikivie

doi:10.1016/j.physletb.2009.04.027

Dark matter caustics in galaxy clusters

V. Onemli
, P. Sikivie^*

^*Bu çalışma için yazışmadan sorumlu yazar

University of Crete
University of Florida

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

6 Atıf (Scopus)

Özet

We interpret the recent gravitational lensing observations of Jee et al. [M.J. Jee, et al., Astrophys. J. 661 (2007) 728] as first evidence for a caustic ring of dark matter in a galaxy cluster. A caustic ring unavoidably forms when a cold collisionless flow falls with net overall rotation in and out of a gravitational potential well. Evidence for caustic rings of dark matter was previously found in the Milky Way and other isolated spiral galaxies. We argue that galaxy clusters have at least one and possibly two or three caustic rings. We calculate the column density profile of a caustic ring in a cluster and show that it is consistent with the observations of Jee et al.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	279-282
Sayfa sayısı	4
Dergi	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Hacim	675
Basın numarası	3-4
DOI'lar	https://doi.org/10.1016/j.physletb.2009.04.027
Yayın durumu	Yayınlandı - 18 May 2009
Harici olarak yayınlandı	Evet

Finansman

We thank Igor Tkachev for making available his numerical codes to solve the equations of the self-similar infall model. We thank Leanne Duffy for useful discussions. This work was supported in part by the US Department of Energy under contract DE-FG02-97ER41029. P.S. gratefully acknowledges the hospitality of the Aspen Center of Physics while working on this project.

Finansörler	Finansör numarası
U.S. Department of Energy	DE-FG02-97ER41029

Belgeye Erişim

10.1016/j.physletb.2009.04.027

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Dark matter caustics in galaxy clusters",

abstract = "We interpret the recent gravitational lensing observations of Jee et al. [M.J. Jee, et al., Astrophys. J. 661 (2007) 728] as first evidence for a caustic ring of dark matter in a galaxy cluster. A caustic ring unavoidably forms when a cold collisionless flow falls with net overall rotation in and out of a gravitational potential well. Evidence for caustic rings of dark matter was previously found in the Milky Way and other isolated spiral galaxies. We argue that galaxy clusters have at least one and possibly two or three caustic rings. We calculate the column density profile of a caustic ring in a cluster and show that it is consistent with the observations of Jee et al.",

author = "V. Onemli and P. Sikivie",

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doi = "10.1016/j.physletb.2009.04.027",

language = "English",

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AU - Onemli, V.

AU - Sikivie, P.

PY - 2009/5/18

Y1 - 2009/5/18

N2 - We interpret the recent gravitational lensing observations of Jee et al. [M.J. Jee, et al., Astrophys. J. 661 (2007) 728] as first evidence for a caustic ring of dark matter in a galaxy cluster. A caustic ring unavoidably forms when a cold collisionless flow falls with net overall rotation in and out of a gravitational potential well. Evidence for caustic rings of dark matter was previously found in the Milky Way and other isolated spiral galaxies. We argue that galaxy clusters have at least one and possibly two or three caustic rings. We calculate the column density profile of a caustic ring in a cluster and show that it is consistent with the observations of Jee et al.

AB - We interpret the recent gravitational lensing observations of Jee et al. [M.J. Jee, et al., Astrophys. J. 661 (2007) 728] as first evidence for a caustic ring of dark matter in a galaxy cluster. A caustic ring unavoidably forms when a cold collisionless flow falls with net overall rotation in and out of a gravitational potential well. Evidence for caustic rings of dark matter was previously found in the Milky Way and other isolated spiral galaxies. We argue that galaxy clusters have at least one and possibly two or three caustic rings. We calculate the column density profile of a caustic ring in a cluster and show that it is consistent with the observations of Jee et al.

UR - https://www.scopus.com/pages/publications/65349109346

U2 - 10.1016/j.physletb.2009.04.027

DO - 10.1016/j.physletb.2009.04.027

M3 - Article

AN - SCOPUS:65349109346

SN - 0370-2693

VL - 675

SP - 279

EP - 282

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Dark matter caustics in galaxy clusters

Özet

Finansman

Belgeye Erişim

Diğer Dosyalar ve Linkler

Parmak izi

Alıntı Yap