SIMBAD references

2004A&A...427...61M - Astronomy and Astrophysics, volume 427, 61-77 (2004/11-3)

LMC self-lensing from a new perspective.

MANCINI L., CALCHI NOVATI S., JETZER P. and SCARPETTA G.

Abstract (from CDS):

We present a new analysis of the location of the observed microlensing events in the direction of the Large Magellanic Cloud (LMC). This is carried out starting from a recently drawn coherent picture of the geometrical structure and dynamics of the LMC disk and by considering different configurations for the LMC bar. In this framework it clearly emerges that the spatial distribution of the events observed so far shows a near-far asymmetry. This turns out to be compatible with the optical depth calculated for the LMC halo objects. Our main conclusion, supported by a statistical analysis of the outcome of an evaluation of the microlensing rate, is that self-lensing cannot account for all the observed events. Finally we propose a general inequality to calculate quickly an upper limit to the optical depth along a line of view through the LMC center.

Abstract Copyright:

Journal keyword(s): gravitational lensing - cosmology: dark matter - galaxies: Magellanic Clouds

Simbad objects: 18

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2004A&A...427...61M and select 'bookmark this link' or equivalent in the popup menu


2021.05.11-10:31:11

© Université de Strasbourg/CNRS

    • Contact