Constraints on the identity of the dark matter from strong gravitational lenses
Constraints on the identity of the dark matter from strong gravitational lenses
复制标题
强引力透镜对暗物质身份的限制
DOI:
10.1093/mnras/stw939
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发表时间:
2015-12
影响因子:
4.8
通讯作者:
Hellwing, Wojciech A.
中科院分区:
文献类型:
--
作者:
Cole, Shaun;Gao, Liang;Bose, Sownak;Hellwing, Wojciech A.
The cold dark matter (CDM) cosmological model unambiguously predicts that a large number of haloes should survive as subhaloes when they are accreted into a larger halo. The CDM model would be ruled out if such substructures were shown not to exist. By contrast, if the dark matter consists of warm particles (WDM), then below a threshold mass that depends on the particle mass far fewer substructures would be present. Finding subhaloes below a certain mass would then rule out warm particle masses below some value. Strong gravitational lensing provides a clean method to measure the subhalo mass function through distortions in the structure of Einstein rings and giant arcs.Using mock lensing observations constructed from high-resolution N-body simulations, we show that measurements of approximately 100 strong lens systems with a detection limit of 10^7h−1M⊙ would clearly distinguish CDM from WDM in the case where this consists of 7 keV sterile neutrinos such as those that might be responsible for the 3.5 keV X-ray emission line recently detected in galaxies and clusters.
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DOI:
10.1086/321541
发表时间:
2000-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Bode;J. Ostriker;N. Turok
通讯作者:
P. Bode;J. Ostriker;N. Turok
影响因子:
4.8
作者:
S. Bose;W. Hellwing;C. Frenk;A. Jenkins;M. Lovell;J. Helly;Baojiu Li
通讯作者:
S. Bose;W. Hellwing;C. Frenk;A. Jenkins;M. Lovell;J. Helly;Baojiu Li
影响因子:
4.8
作者:
H. Mahdi;M. V. Beek;P. Elahi;G. Lewis;C. Power;M. Killedar
通讯作者:
H. Mahdi;M. V. Beek;P. Elahi;G. Lewis;C. Power;M. Killedar
影响因子:
4.8
作者:
D. Erkal;V. Belokurov
通讯作者:
D. Erkal;V. Belokurov
DOI:
10.1046/j.1365-8711.1998.01319.x
发表时间:
1997-07
影响因子:
4.8
作者:
S. Mao;P. Schneider
通讯作者:
S. Mao;P. Schneider