A quantum theory of gravity is proving elusive. Observations of radiation from the Crab nebula now place even stronger constraints on the likelihood of detecting the effects of quantum gravity.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
References
Jacobson, T., Liberati, S. & Mattingly, D. Nature 424, 1019–1021 (2003).
Amelino-Camelia, G., Ellis, J., Mavromatos, N. E., Nanopoulos, D. V. & Sarkar, S. Nature 393, 763–765 (1998).
Myers, R. C. & Pospelov, M. Phys. Rev. Lett. 90, 211601 (2003).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Carroll, S. An astrophysical constraint. Nature 424, 1007–1008 (2003). https://doi.org/10.1038/4241007a
Issue Date:
DOI: https://doi.org/10.1038/4241007a