PKS 0537-441 - AN ELUSIVE CASE OF A GRAVITATIONALLY LENSED BLAZER

被引：0

作者：

FALOMO, R

MELNICK, J

TANZI, EG

机构：

[1] EUROPEAN SO OBSERV, LA SILLA, CHILE

[2] OSSERV ASTROFIS CATANIA, I-95125 CATANIA, ITALY

[3] CNR, IST FIS COSM, I-20133 MILAN, ITALY

来源：

ASTRONOMY & ASTROPHYSICS | 1992年 / 255卷 / 1-2期

关键词：

BL LACERTAE OBJECTS; GALAXIES; INDIVIDUAL;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

NTT high resolution imaging (FWHM = 0.55 arcsec) of PKS 0537-441, proposed as a case of gravitationally lensed blazar, shows that the source (z = 0.894) is unresolved, thus failing to detect the alleged presence of a foreground galaxy along the line of sight. As a consequence, the case for a gravitational lensing effect to account for the properties of the source is substantially weakened.

引用

页码：L17 / L19

页数：3

共 14 条

[1] BARBON R, 1976, ASTRON ASTROPHYS, V51, P25
[2] Blandford R. D., 1978, BL LAC OBJECTS, P328
[3] BROWNE IWA, 1989, BL LAC OBJECTS, P401
[4] BURBIDGE G, 1989, BL LAC OBJECTS, P412
[5] ON THE CLOSE ENVIRONMENT OF BL LACERTAE OBJECTS
FALOMO, R
MELNICK, J
TANZI, EG
[J]. NATURE, 1990, 345 (6277) : 692 - 694
[6] FALOMO R, 1991, IN PRESS APJ
[7] FASANO G, 1990, ASTRON ASTROPHYS, V234, P89
[8] ARE SOME BL LAC OBJECTS ARTIFACTS OF GRAVITATIONAL LENSING
OSTRIKER, JP
VIETRI, M
[J]. NATURE, 1985, 318 (6045) : 446 - 448
[9] OSTRIKER JP, 1989, BL LAC OBJECTS, P420
[10] FANAROFF-RILEY-I GALAXIES AS THE PARENT POPULATION OF BL LACERTAE OBJECTS .2. OPTICAL CONSTRAINTS
PADOVANI, P
URRY, CM
[J]. ASTROPHYSICAL JOURNAL, 1991, 368 (02) : 373 - 379

← 1 2 →