NOAO >   Observing Info >   Approved Programs >   2017A-0348

Small NOAO Logo

Program Information for 2017A-0348


PI: Peter Espenshade, Carnegie Mellon U., pespensh@andrew.cmu.edu
Address: Physics Department, 5032 Forbes Avenue, SMC 3943, Pittsburgh, PA 15289 United States

Title: Limits on the fractional abundance of primordial black holes using short timescale microlensing

Abstract: Dark matter is commonly identified with elementary particles. However, primordial black holes (PBHs) are viable candidates for dark matter as well (Hawkins 2011). I propose a survey of the Large Magellanic Cloud (LMC) in order to decrease the likelihood of PBH presence in the Galactic halo and thus decrease the likelihood of PBHs as dark matter. Surveys of this nature already exist, namely EROS and EROS-2. These surveys have utilized gravitational microlensing of massive compact halo objects (MACHOs) in order to constrain the upper bound fraction of the Galactic halo in PBHs. What sets this proposal apart from EROS and EROS-2 is that the 0.9-m telescope could utilize shorter image collecting intervals as well as an improved pixel scale in order to determine improved mass fraction constraints at lower masses. Such a constraint would further decrease the viability of PBHs as dark matter.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2017A):  CT-0.9m/CFIM -- 5n on Feb 08 - Feb 12 2017


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2017A-0348

noaoprop-help@noao.edu

Small NOAO Logo