Temporal Bias in the Clustering of Massive Cosmological Objects

Evan Scannapieco; Robert J. Thacker

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arXiv · astro-ph/0311136

Temporal Bias in the Clustering of Massive Cosmological Objects

Evan Scannapieco·Robert J. Thacker

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Abstract

It is a well-established fact that massive cosmological objects exhibit a ``geometrical bias'' that boosts their spatial correlations with respect to the underlying mass distribution. Although this geometrical bias is a simple function of mass, this is only half of the story. We show using numerical simulations that objects that are in the midst of accreting material also exhibit a ``temporal bias,'' which further boosts their clustering far above geometrical bias levels. These results may help to resolve a discrepancy between spectroscopic and clustering mass estimates of Lyman Break Galaxies, a population of high-redshift galaxies that are caught in the act of forming large numbers of new stars.

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Evan Scannapieco, Robert J. Thacker. 2003-11-05. Temporal Bias in the Clustering of Massive Cosmological Objects. https://arxiv.org/abs/astro-ph/0311136

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