Skip to main content

Bioenergetics and stellar luminosities

  • C Sivaram (a1), K Arun (a2) and O V Kiren (a3)

We draw attention to a curious coincidence wherein the most (steadily emitting) luminous objects in the Universe from stellar X-ray sources to ultra-luminous quasars and Ultra Luminous Infrared Galaxies, steadily emit a power per unit mass, which is just the same value as the maximal metabolic rate in (warm-blooded) bio-organisms.

Corresponding author
Author for correspondence: Kenath Arun, E-mail:
Hide All
Banavar, JR, Maritan, A and Rinaldo, A (1999) Size and form in efficient transportation networks. Nature 399, 130132.
McNab, BK (2003) Metabolism: Ecology shapes bird bioenergetics. Nature 426, 620621.
Shapiro, S and Teukolsky, S (1983) Black Holes, White Dwarfs, and Neutron Stars: The Physics of Compact Objects. New York: Wiley.
Sivaram, C (1982) A general upper limit on the mass and entropy production of a cluster of supermassive objects. Astrophysics and Space Science 86, 501504.
Sivaram, C and Sastry, A (2004) Introduction to Astrobiology. Hyderabad: Universities Press.
West, GB and Brown, JH (2004) Life's Universal Scaling Laws. Physics Today 57, 3643.
West, GB, Brown, JH and Enquist, BJ (1997) A general model for the origin of allometric scaling laws in biology. Science 276, 122126.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

International Journal of Astrobiology
  • ISSN: 1473-5504
  • EISSN: 1475-3006
  • URL: /core/journals/international-journal-of-astrobiology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 8
Total number of PDF views: 28 *
Loading metrics...

Abstract views

Total abstract views: 236 *
Loading metrics...

* Views captured on Cambridge Core between 12th October 2017 - 20th April 2018. This data will be updated every 24 hours.