2008

Probing the Effective Number of Neutrino Species with Cosmic Microwave Background

Ichikawa, Kazuhide, Sekiguchi, Toyokazu, Takahashi, Tomo

Understand

We discuss how much we can probe the effective number of neutrino species N_nu with cosmic microwave background alone.

Using the data of WMAP, ACBAR, CBI and BOOMERANG experiments, we obtain a constraint on the effective number of neutrino species as 0.96< N_nu <7.94 at 95% C.L.
for a power-law LCDM flat universe model.
The limit is improved to be 1.39 < N_nu < 6.38 at 95% C.L.

Built on

L. H. Kawano, FERMILAB-Pub-92/04-A (1992)
1992
Earlier work this paper cites.
M. Kawasaki, K. Kohri and N. Sugiyama, Phys. Rev. Lett. 82
1999
Earlier work this paper cites.
C. Angulo et al
1999
Earlier work this paper cites.
S. Seager, D. D. Sasselov and D. Scott, Astrophys. J. Lett. 523
1999
Earlier work this paper cites.
M. Kawasaki, K. Kohri and N. Sugiyama, Phys. Rev. D 62
2000
Earlier work this paper cites.
J. P. Kneller, R. J. Scherrer, G. Steigman and T. P. Walker, Phys. Rev. D 64
2001
Earlier work this paper cites.
S. Hannestad, Phys. Rev. D 64
2001
Earlier work this paper cites.
W. L. Freedman et al
2001
Earlier work this paper cites.
W. Hu, M. Fukugita, M. Zaldarriaga and M. Tegmark, Astrophys. J. 549
2001
Earlier work this paper cites.
A. D. Dolgov, Phys. Rept. 370
2002
Earlier work this paper cites.
R. Bowen, S. H. Hansen, A. Melchiorri, J. Silk and R. Trotta, Mon. Not. Roy. Astron. Soc. 334
2002
Earlier work this paper cites.
A. Lewis and S. Bridle, Phys. Rev. D 66
2002
Earlier work this paper cites.
A. Kosowsky, M. Milosavljevic and R. Jimenez, Phys. Rev. D 66
2002
Earlier work this paper cites.
E. Komatsu and U. Seljak, Mon. Not. Roy. Astron. Soc. 336
2002
Earlier work this paper cites.
P. Crotty, J. Lesgourgues and S. Pastor, Phys. Rev. D 67
2003
Earlier work this paper cites.
E. Pierpaoli, Mon. Not. Roy. Astron. Soc. 342
2003
Earlier work this paper cites.
S. Hannestad, JCAP 0305
2003
Earlier work this paper cites.
V. Barger, J. P. Kneller, H. S. Lee, D. Marfatia and G. Steigman, Phys. Lett. B 566
2003
Earlier work this paper cites.

Similar

L. M. Krauss and B. Chaboyer, Science 299
2003
Cited alongside, same era.
S. Hannestad, Phys. Rev. D 70
2004
Cited alongside, same era.
P. Crotty, J. Lesgourgues and S. Pastor, Phys. Rev. D 69
2004
Cited alongside, same era.
S. Bashinsky and U. Seljak, Phys. Rev. D 69
2004
Cited alongside, same era.
G. Huey, R. H. Cyburt and B. D. Wandelt, Phys. Rev. D 69
2004
Cited alongside, same era.
P. D. Serpico, S. Esposito, F. Iocco, G. Mangano, G. Miele and O. Pisanti, JCAP 0412
2004
Cited alongside, same era.
K. Ichikawa, M. Kawasaki and F. Takahashi, Phys. Lett. B 597
2004
Cited alongside, same era.
K. Ichikawa, M. Kawasaki and F. Takahashi, Phys. Rev. D 72
2005
Cited alongside, same era.
G. Mangano, G. Miele, S. Pastor, T. Pinto, O. Pisanti and P. D. Serpico, Nucl. Phys. B 729
2005
Cited alongside, same era.
W. M. Yao et al
2006
Cited alongside, same era.
S. Hannestad, JCAP 0601
2006
Cited alongside, same era.
U. Seljak, A. Slosar and P. McDonald, JCAP 0610
2006
Cited alongside, same era.

Then

K. Ichikawa and T. Takahashi, Phys. Rev. D 73
2006
Later among the works it cites.
L. Perotto, J. Lesgourgues, S. Hannestad, H. Tu and Y. Y. Y. Wong, JCAP 0610
2006
Later among the works it cites.
J. Chluba and R. A. Sunyaev, Astron. Astrophys. 446
2006
Later among the works it cites.
A. Lewis, J. Weller and R. Battye, Mon. Not. Roy. Astron. Soc. 373
2006
Later among the works it cites.
D. N. Spergel et al
2007
Later among the works it cites.
K. Ichikawa, M. Kawasaki and F. Takahashi, JCAP 0705
2007
Later among the works it cites.
G. Mangano, A. Melchiorri, O. Mena, G. Miele and A. Slosar, JCAP 0703
2007
Later among the works it cites.
J. Hamann, S. Hannestad, G. G. Raffelt and Y. Y. Y. Wong, JCAP 0708
Original
2007
Later among the works it cites.
K. Ichikawa, M. Kawasaki, K. Nakayama, M. Senami and F. Takahashi, JCAP 0705
2007
Later among the works it cites.
J. Chluba, J. A. Rubino-Martin and R. A. Sunyaev, Mon. Not. Roy. Astron. Soc. 374
2007
Later among the works it cites.
F. de Bernardis, A. Melchiorri, L. Verde and R. Jimenez, JCAP 0803
Original
2008
Closest in time.
V. Simha and G. Steigman, JCAP 0806
Original
2008
Closest in time.
L. A. Popa and A. Vasile, JCAP 0806
Original
2008
Closest in time.
J. Hamann, J. Lesgourgues and G. Mangano, JCAP 0803
Original
2008
Closest in time.
K. Ichikawa, T. Sekiguchi and T. Takahashi, Phys. Rev. D 78
Original
2008
Closest in time.
E. R. Switzer and C. M. Hirata, Phys. Rev. D 77
2008
Closest in time.
C. M. Hirata and E. R. Switzer, Phys. Rev. D 77
2008
Closest in time.
E. R. Switzer and C. M. Hirata, Phys. Rev. D 77
2008
Closest in time.

Beyond the bibliography

alphaXiv searches the wider corpus for related work and actual follow-ups.

Open on alphaXiv

alphaXiv is searching for related work…

Reading the bibliography…