J0316+4328: A probable 'asymmetric double' lens

E. R. Boyce; S. T. Myers; I. W A Browne; W. J. Stroman; N. J. Jackson

doi:10.1111/j.1745-3933.2007.00365.x

J0316+4328: A probable 'asymmetric double' lens

E. R. Boyce, S. T. Myers, I. W A Browne, W. J. Stroman, N. J. Jackson

Research output: Contribution to journal › Article › peer-review

Abstract

We report a probable gravitational lens J0316+4328, one of 19 candidate asymmetric double lenses (two images at a high flux density ratio) from CLASS. Observations with the Very Large Array (VLA), MERLIN and the Very Long Baseline Array (VLBA) imply that J0316+4328 is a lens with high confidence. It has two images separated by 0.40 arcsec, with 6-GHz flux densities of 62 mJy and 3.2 mJy. The flux density ratio of ~ 19 (constant over the frequency range 6-22 GHz) is the largest for any two-image gravitational lens. High-resolution optical imaging and deeper VLBI maps should confirm the lensing interpretation and provide inputs to detailed lens models. The unique configuration will give strong constraints on the lens galaxy's mass profile. © 2007 The Authors. Journal compilation © 2007 RAS.

Original language	English
Pages (from-to)	L55-L59
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	381
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2007.00365.x
Publication status	Published - Oct 2007

Keywords

Cosmology: miscellaneous
Gravitational lensing

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title = "J0316+4328: A probable 'asymmetric double' lens",

abstract = "We report a probable gravitational lens J0316+4328, one of 19 candidate asymmetric double lenses (two images at a high flux density ratio) from CLASS. Observations with the Very Large Array (VLA), MERLIN and the Very Long Baseline Array (VLBA) imply that J0316+4328 is a lens with high confidence. It has two images separated by 0.40 arcsec, with 6-GHz flux densities of 62 mJy and 3.2 mJy. The flux density ratio of ~ 19 (constant over the frequency range 6-22 GHz) is the largest for any two-image gravitational lens. High-resolution optical imaging and deeper VLBI maps should confirm the lensing interpretation and provide inputs to detailed lens models. The unique configuration will give strong constraints on the lens galaxy's mass profile. {\textcopyright} 2007 The Authors. Journal compilation {\textcopyright} 2007 RAS.",

keywords = "Cosmology: miscellaneous, Gravitational lensing",

author = "Boyce, {E. R.} and Myers, {S. T.} and Browne, {I. W A} and Stroman, {W. J.} and Jackson, {N. J.}",

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doi = "10.1111/j.1745-3933.2007.00365.x",

language = "English",

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T1 - J0316+4328: A probable 'asymmetric double' lens

AU - Boyce, E. R.

AU - Myers, S. T.

AU - Browne, I. W A

AU - Stroman, W. J.

AU - Jackson, N. J.

PY - 2007/10

Y1 - 2007/10

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KW - Cosmology: miscellaneous

KW - Gravitational lensing

U2 - 10.1111/j.1745-3933.2007.00365.x

DO - 10.1111/j.1745-3933.2007.00365.x

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JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

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J0316+4328: A probable 'asymmetric double' lens

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