Publication

A new quadruple gravitational lens system: CLASS B0128+437

Phillips, PM., Norbury, MA., Koopmans, LVE., Browne, IWA., Jackson, NJ., Wilkinson, PN., Biggs, AD., Blandford, RD., de Bruyn, AG., Fassnacht, CD., Helbig, P., Mao, S., Marlow, DR., Myers, ST., Pearson, TJ., Readhead, ACS., Rusin, D. & Xanthopoulos, E., 1-Dec-2000, In : Monthly Notices of the Royal Astronomical Society. 319, 2, p. L7-L11 5 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Phillips, PM., Norbury, MA., Koopmans, LVE., Browne, IWA., Jackson, NJ., Wilkinson, PN., Biggs, AD., Blandford, RD., de Bruyn, AG., Fassnacht, CD., Helbig, P., Mao, S., Marlow, DR., Myers, ST., Pearson, TJ., Readhead, ACS., Rusin, D., & Xanthopoulos, E. (2000). A new quadruple gravitational lens system: CLASS B0128+437. Monthly Notices of the Royal Astronomical Society, 319(2), L7-L11. https://doi.org/10.1046/j.1365-8711.2000.04033.x

Author

Phillips, PM ; Norbury, MA ; Koopmans, LVE ; Browne, IWA ; Jackson, NJ ; Wilkinson, PN ; Biggs, AD ; Blandford, RD ; de Bruyn, AG ; Fassnacht, CD ; Helbig, P ; Mao, S ; Marlow, DR ; Myers, ST ; Pearson, TJ ; Readhead, ACS ; Rusin, D ; Xanthopoulos, E. / A new quadruple gravitational lens system : CLASS B0128+437. In: Monthly Notices of the Royal Astronomical Society. 2000 ; Vol. 319, No. 2. pp. L7-L11.

Harvard

Phillips, PM, Norbury, MA, Koopmans, LVE, Browne, IWA, Jackson, NJ, Wilkinson, PN, Biggs, AD, Blandford, RD, de Bruyn, AG, Fassnacht, CD, Helbig, P, Mao, S, Marlow, DR, Myers, ST, Pearson, TJ, Readhead, ACS, Rusin, D & Xanthopoulos, E 2000, 'A new quadruple gravitational lens system: CLASS B0128+437', Monthly Notices of the Royal Astronomical Society, vol. 319, no. 2, pp. L7-L11. https://doi.org/10.1046/j.1365-8711.2000.04033.x

Standard

A new quadruple gravitational lens system : CLASS B0128+437. / Phillips, PM; Norbury, MA; Koopmans, LVE; Browne, IWA; Jackson, NJ; Wilkinson, PN; Biggs, AD; Blandford, RD; de Bruyn, AG; Fassnacht, CD; Helbig, P; Mao, S; Marlow, DR; Myers, ST; Pearson, TJ; Readhead, ACS; Rusin, D; Xanthopoulos, E.

In: Monthly Notices of the Royal Astronomical Society, Vol. 319, No. 2, 01.12.2000, p. L7-L11.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Phillips PM, Norbury MA, Koopmans LVE, Browne IWA, Jackson NJ, Wilkinson PN et al. A new quadruple gravitational lens system: CLASS B0128+437. Monthly Notices of the Royal Astronomical Society. 2000 Dec 1;319(2):L7-L11. https://doi.org/10.1046/j.1365-8711.2000.04033.x


BibTeX

@article{61c1b3164863499aa5ff36230206075b,
title = "A new quadruple gravitational lens system: CLASS B0128+437",
abstract = "High-resolution MERLIN observations of a newly discovered four-image gravitational lens system, B0128+437, are presented. The system was found after a careful re-analysis of the entire CLASS data set. The MERLIN observations resolve four components in a characteristic quadruple-image configuration; the maximum image separation is 542 mas and the total flux density is 48 mJy at 5 GHz. A best-fitting lens model with a singular isothermal ellipsoid results in large errors in the image positions. A significantly improved fit is obtained after the addition of a shear component, suggesting that the lensing system is more complex and may consist of multiple deflectors. The integrated radio spectrum of the background source indicates that it is a gigahertz peaked spectrum source, It may therefore be possible to resolve structure within the radio images with deep VLBI observations and thus to constrain the lensing mass distribution better.",
keywords = "quasars : individual : B0128+437, cosmology : observations, gravitational lensing, PHASE CALIBRATION SOURCES, VLA ASTROMETRIC SURVEY, RADIO-SOURCES, SKY SURVEY, STATISTICS",
author = "PM Phillips and MA Norbury and LVE Koopmans and IWA Browne and NJ Jackson and PN Wilkinson and AD Biggs and RD Blandford and {de Bruyn}, AG and CD Fassnacht and P Helbig and S Mao and DR Marlow and ST Myers and TJ Pearson and ACS Readhead and D Rusin and E Xanthopoulos",
note = "Relation: https://www.rug.nl/ date_submitted:2006 Rights: University of Groningen",
year = "2000",
month = dec,
day = "1",
doi = "10.1046/j.1365-8711.2000.04033.x",
language = "English",
volume = "319",
pages = "L7--L11",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - A new quadruple gravitational lens system

T2 - CLASS B0128+437

AU - Phillips, PM

AU - Norbury, MA

AU - Koopmans, LVE

AU - Browne, IWA

AU - Jackson, NJ

AU - Wilkinson, PN

AU - Biggs, AD

AU - Blandford, RD

AU - de Bruyn, AG

AU - Fassnacht, CD

AU - Helbig, P

AU - Mao, S

AU - Marlow, DR

AU - Myers, ST

AU - Pearson, TJ

AU - Readhead, ACS

AU - Rusin, D

AU - Xanthopoulos, E

N1 - Relation: https://www.rug.nl/ date_submitted:2006 Rights: University of Groningen

PY - 2000/12/1

Y1 - 2000/12/1

N2 - High-resolution MERLIN observations of a newly discovered four-image gravitational lens system, B0128+437, are presented. The system was found after a careful re-analysis of the entire CLASS data set. The MERLIN observations resolve four components in a characteristic quadruple-image configuration; the maximum image separation is 542 mas and the total flux density is 48 mJy at 5 GHz. A best-fitting lens model with a singular isothermal ellipsoid results in large errors in the image positions. A significantly improved fit is obtained after the addition of a shear component, suggesting that the lensing system is more complex and may consist of multiple deflectors. The integrated radio spectrum of the background source indicates that it is a gigahertz peaked spectrum source, It may therefore be possible to resolve structure within the radio images with deep VLBI observations and thus to constrain the lensing mass distribution better.

AB - High-resolution MERLIN observations of a newly discovered four-image gravitational lens system, B0128+437, are presented. The system was found after a careful re-analysis of the entire CLASS data set. The MERLIN observations resolve four components in a characteristic quadruple-image configuration; the maximum image separation is 542 mas and the total flux density is 48 mJy at 5 GHz. A best-fitting lens model with a singular isothermal ellipsoid results in large errors in the image positions. A significantly improved fit is obtained after the addition of a shear component, suggesting that the lensing system is more complex and may consist of multiple deflectors. The integrated radio spectrum of the background source indicates that it is a gigahertz peaked spectrum source, It may therefore be possible to resolve structure within the radio images with deep VLBI observations and thus to constrain the lensing mass distribution better.

KW - quasars : individual : B0128+437

KW - cosmology : observations

KW - gravitational lensing

KW - PHASE CALIBRATION SOURCES

KW - VLA ASTROMETRIC SURVEY

KW - RADIO-SOURCES

KW - SKY SURVEY

KW - STATISTICS

U2 - 10.1046/j.1365-8711.2000.04033.x

DO - 10.1046/j.1365-8711.2000.04033.x

M3 - Article

VL - 319

SP - L7-L11

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -

ID: 3140030