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Primordial gas heating by dark matter and structure formation · Around

2007

Primordial gas heating by dark matter and structure formation

Mapelli, M., Ripamonti, E.

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Dark matter (DM) decays and annihilations might heat and partially reionize the Universe at high redshift.

Although this effect is not important for the cosmic reionization, the gas heating due to DM particles might affect the structure formation.
In particular, the critical halo mass for collapse is increased up to a factor of ~2.
Also the fraction of gas which collapses inside the smallest halos is substantially reduced with respect to the cosmological value.

Built on

Navarro J. F., Frenk C. S., White S. D. M., 1996, ApJ, 462, 563
1996
Earlier work this paper cites.
Tegmark M., Silk J., Rees M. J., Blanchard A., Abel T., Palla F. 1997, ApJ, 474, 1
Original
1997
Earlier work this paper cites.
Mapelli, M., Ferrara A. & Pierpaoli E., 2006, MNRAS, 369, 1719
2006
Earlier work this paper cites.

Similar

Mapelli, M. & Ripamonti, E. 2007, to appear in the proceedings of the 11th Marcel Grossmann Meeting held in Berlin, Germany, July 23-29 2006, arXiv:astro-ph/0701672v1
2006
Cited alongside, same era.
Ripamonti, E. & Mapelli, M. 2007, to appear in the proceedings of the 11th Marcel Grossmann Meeting held in Berlin, Germany, July 23-29 2006, arXiv:astro-ph/0701673v1
2006
Cited alongside, same era.
Ripamonti, E., Mapelli, M. & Ferrara, A. 2007a, MNRAS, 374, 1067
Cited in the paper.
Ripamonti, E., Mapelli, M. & Ferrara, A. 2007b, MNRAS, 375, 1399
Cited in the paper.

Then

Ripamonti, E., 2007, MNRAS, 376, 709
2007
Closest in time.
Spergel, D. N. et al. 2007, ApJ, accepted, arXiv:astro-ph/0603449v2
2007
Closest in time.

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