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IPM
30
YEARS OLD

“School of Astronomy”

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Paper   IPM / Astronomy / 16124
School of Astronomy
  Title:   Impact of the vector dark matter on polarization of the CMB photon
  Author(s): 
1.  S. Modares Vamegh
2.  M. Haghighat
3.  S. Mahmoudi
4.  R. Mohammadi
  Status:   Published
  Journal:
  Vol.:  100
  Year:  2019
  Supported by:            ipm IPM
  Abstract:
We consider a vector dark matter (VDM) with a direct coupling with photon. We examine the effect of such an interaction on the CMB polarization to put new constrains on the properties of the DM particles. We show that a partially polarized VDM of the order of temperature fluctuation with a quadrupole distribution leads to a valuable CP for the CMB. In different DM-models the DM-masses range from few eV to a few TeV. We show that the CP angular power spectrum depends on the mass of VDM as C(S)Vl∝1/m6V such that for mV=10eV−1keV, the CP angular power spectrum is C(S)Vl≃103−10−11nK2. Therefore, the light VDM with masses less than 10eV leads to an unexpected very large CP which can be excluded from the acceptable range of the VDM masses

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