476 citations · 10.1k across the 164 of their papers we have counts for
6 papers · 1 filter
Observational Tests to Discern the Topology of Planckian Space-Time
Marco Spaans
Observational diagnostics are constructed which reflect the underlying topology of Planckian space-time, and are directly related to phenomena on much larger scales. Specific predi…
Far-Infrared and Sub-Millimeter Observations and Physical Models of the Reflection Nebula Ced 201
Ciska Kemper, Marco Spaans, David J. Jansen +3
ISO [C II] 158 micron, [O I] 63 micron, and H_2 9 and 17 micron observations are presented of the reflection nebula Ced 201, which is a photon-dominated region illuminated by a B9.…
Models for Dusty Lyman alpha Emitters at High Redshift
Zoltan Haiman, Marco Spaans
Models are presented for the Lyman alpha emission of dusty high-redshift galaxies by combining the Press-Schechter formalism with a treatment of the inhomogeneous dust distribution…
Towards a Topological Formulation of Fundamental Interactions
Marco Spaans
A thought experiment is formulated to unify quantum mechanics and general relativity in a topological manner. An analysis of the interactions in Nature is then presented. The unive…
Search for Interstellar Water in the Translucent Molecular Cloud toward HD 154368
Marco Spaans, David Neufeld, Stephen Lepp +2
We report an upper limit of 9 x 10^{12} cm-2 on the column density of water in the translucent cloud along the line of sight toward HD 154368. This result is based upon a search fo…
Effective Star Formation Rates for Cosmological Applications
Marco Spaans, Marcella Carollo
Effective star formation rates in tabular form are computed which yield a prescription for the star formation activity in model galaxies as a function of ambient density, metallici…