Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-09T01:45:54.608Z Has data issue: false hasContentIssue false
  • English
  • Français

Observations of the Near-Infrared Extragalactic Background Light

Published online by Cambridge University Press:  13 May 2016

Toshio Matsumoto
Toshio Matsumoto*
Affiliation:
Institute of Space and Astronautical Science, Kanagawa 229–8510, Japan

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We searched for the near infrared extragalactic background light (IREBL) in data from the Near Infrared Spectrometer (NIRS) on the Infrared Telescope in Space (IRTS). After subtracting the contribution of faint stars and a modeled zodiacal component, a significant isotropic emission is detected whose in-band flux amounts to ~ 30 nWm−2sr−1. This brightness is consistent with upper limits of COBE/DIRBE, but is significantly brighter than the integrated light of faint galaxies. The star subtraction analyses from DIRBE data show essentially the same results apart from the uncertainty in the model of the zodiacal light. A significant fluctuation of the sky brightness was also detected. A 2-point correlation analysis indicates that the fluctuations have a characteristic spatial structure of 100 ~ 200 arcmin. This could be an indication of the large scale structure at high redshift. Combined with the far infrared and submillimeter EBL, the total energy flux amounts to 50 ~ 80 nWm−2sr−1 which is so bright that unknown energy sources at high redshifts are required.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 204: The Extragalactic Infrared Background and its Cosmological Implication , 2001 , pp. 87 - 100
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Abraham, P. et al 1998, in ESA SP-427, The Universe as Seen by ISO, ed. Cox, P. & Kessler, M., 145 Google Scholar
Bernstein, R. A., Freedman, W. L., & Madore, B. F. 2000, ApJ, submitted.Google Scholar
Blain, A. W., Kneib, J.-P, Ivison, R. J., & Smail, I. 1999, ApJ, 512, L87 CrossRefGoogle Scholar
Cohen, M. 1997, in ASP Conf. Series Vol. 124, Diffuse Infrared Radiation and the IRTS, ed. Okuda, H., Matsumoto, T. & Roellig, T. (San Francisco: ASP), 61 Google Scholar
Finkbeiner, D. P., Davis, M., & Schlegel, D. J. 2000, ApJ, 544, 81 CrossRefGoogle Scholar
Fixsen, D. J. et al. 1998, ApJ, 508, 123 Google Scholar
Gorjian, V., Wright, E. L., & Chary, R. R. 2000, ApJ, 536, 550 Google Scholar
Hauser, M. G. 1995, in AIP Conf. Proc., 348, Unveiling the Cosmic Infrared Background, ed. Dwek, E. (New York: AIP), 11 Google Scholar
Hauser, M. G. et al. 1998, ApJ, 508, 25 Google Scholar
Kashlinsky, A., & Odenwald, S. 2000, ApJ, 528, 74 Google Scholar
Kelsall, T. et al. 1998, ApJ, 508, 44 Google Scholar
Lagache, G., Haffner, L. M., Reynolds, R. J., & Tufte, S. L. 2000, A&A, 354, 247 Google Scholar
Madau, P., & Pozzetti, L. 2000, A&A, 312, L9 Google Scholar
Matsumoto, T., Itoh, N., Nakata, K., Cohen, M., & Tanaka, M. 2000, in preparation.Google Scholar
Matsuhara, H., Kawara, K., Sato, Y., Taniguchi, Y. et al. 2000, A&A, 361, 407 Google Scholar
Murakami, H. et al. 1996, PASJ, 48, L41 CrossRefGoogle Scholar
Noda, M. et al. 1994, ApJ, 428, 363 CrossRefGoogle Scholar
Noda, M. et al. 1996, SPIE, 2817, 248 Google Scholar
Puget, J.-L, et al. 1996, A&A, 308, L5 Google Scholar
Tanihata, C., Takahashi, T., & Matsumoto, T. 2000, in preparation.Google Scholar
Totani, T. et al. 2000, in this volume.Google Scholar
Totani, T., & Yoshii, Y. 2000, ApJ, 540, 81 Google Scholar
Vrtilek, J. M., & Hauser, M. G. 1995, ApJ, 455, 677 Google Scholar
Wright, E. L. 2000, astro-ph/0004192 Google Scholar