2003ApJ...585L..11D

Query : 2003ApJ...585L..11D

2003ApJ...585L..11D - Astrophys. J., 585, L11-L14 (2003/March-1)

Corrective lenses for high-redshift supernovae.

DALAL N., HOLZ D.E., CHEN X. and FRIEMAN J.A.

Abstract (from CDS):

Weak lensing of high-redshift Type Ia supernovae induces an external dispersion in their observed standard candle brightnesses, comparable in magnitude to the intrinsic dispersion for redshifts z>1. The same matter fluctuations responsible for the magnification of distant supernovae also generate shear in the images of background galaxies. We investigate the possibility of using lensing shear maps constructed from galaxies surrounding the supernovae as a means of correcting the lensing-induced magnification dispersion. We find that a considerable fraction of the lensing dispersion derives from subarcminute scales, which are not probed by shear maps smoothed on arcminute scales. We thus find that weak-lensing shear maps will be of only limited value in reducing the weak-lensing magnification fluctuations of supernovae.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Observations - Cosmology: Theory - Cosmology: Dark Matter - Cosmology: Gravitational Lensing - Stars: Supernovae: General

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 1997ff SN* 12 36 44.10 +62 12 44.7         26.77 SNIa 67 1

Query : 2003ApJ...585L..11D

Basic data :
SN 1997ff -- SuperNova
Other object types: otypes_help 		SN* (2012A&A,SN)
ICRS coord. (ep=J2000) : 		12 36 44.10 +62 12 44.7 [ ] D 2008yCat.2283....0B
FK4 coord. (ep=B1950 eq=1950) : 		12 34 30.08 +62 29 14.6 [ ]
Gal coord. (ep=J2000) : 		125.90627 +54.83084 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 229992 [~] / z(~) 1.755 [~] / cz 526136 [~]
   D 2004ApJ...602...12Z
Spectral type: 		SNIa C 2008yCat....1.2024B
Fluxes (1) :
I 26.77 [~] D 2008yCat.2283....0B
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Identifiers (1) :
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SN 1997ff

References (67 between 1850 and 2026) (Total 67)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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