New Class of Dark Matter Objects and their Detection

Abstract

About one-fourth of the universe is thought to consist of dark matter. Yet there is no clear understanding about the nature of these particles. Commonly discussed dark matter candidates includes the so called WIMPs or weakly interacting massive particles with masses from about 10GeV to 1TeV. These particles can gravitate to form a new class of objects in dark matter halos or around the galactic centre. We study in some detail many properties of these objects; which are dark matter dominated and bound by their self gravity; their formation and possibilities of their detection. Implications of the presence of such objects for star formation are also discussed. These objects could provide the possibility of forming primordial black holes distinct from the usual Hawking black holes and they could also provide a scenario for short duration gamma ray bursts, avoiding the baryon load problem.

16 pages, 81 equations

References in corpus (7)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Dark matter and the first stars: a new phase of stellar evolution
• Compact stars made of fermionic dark matter
• Resolving Cosmic Gamma Ray Anomalies with Dark Matter Decaying Now
• Superdense cosmological dark matter clumps
• Impact of Primordial Ultracompact Minihaloes on the Intergalactic Medium and First Structure Formation
• Search for VHE $\gamma$-ray emission from the globular cluster M13 with the MAGIC telescope

Cited by in corpus (6)

• Dark matter, dark energy, and alternate models: A review
• Effects of dark matter in star formation
• Evolution of Primordial Dark Matter Planets in the Early Universe
• Charged Black Holes and Constraints on Baryon Asymmetry
• Possible Alternate Scenario for short Duration GRBs
• Astrophysical Signatures of Fermionic Dark Matter