Gravitational lensing of the farthest known supernova SN 1997ff

被引：24

作者：

Mörtsell, E ^{[1
]}

Gunnarsson, C ^{[1
]}

Goobar, A ^{[1
]}

机构：

[1] Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 561卷 / 01期

关键词：

galaxies : high-redshift; gravitational lensing; supernovae : individual (SN 1997ff);

D O I：

10.1086/323242

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the effects of gravitational lensing due to intervening galaxies on the recently discovered Type Ia supernova at z similar to 1.7, SN 1997ff, in the Hubble Deep Field North. We find that it is possible to obtain a wide range of magnifications by varying the mass and/or the velocity dispersion normalization of the lensing galaxies. In order to be able to use SN 1997ff to constrain the redshift-distance relation, very detailed modeling of the galaxies to control the systematic effects from lensing is necessary. Thus, we argue that, based on our current limited knowledge of the lensing galaxies, it is difficult to use SN 1997ff to constrain the values of Omega (M) and Omega (Lambda), or even to place severe limits on gray dust obscuration or luminosity evolution of Type Ia supernovae.

引用

页码：106 / 110

页数：5

共 10 条

[1]

Bergström L, 2000, ASTRON ASTROPHYS, V358, P13

[2] FEASIBILITY OF MEASURING THE COSMOLOGICAL CONSTANT-LAMBDA AND MASS-DENSITY-OMEGA USING TYPE IA SUPERNOVAE [J].