The twisted parsec-scale structure of 0735+178

被引：21

作者：

Gómez, JL ^{[1
]}

Marscher, AP

Alberdi, A

Gabuzda, DC

机构：

[1] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain

[2] Boston Univ, Dept Astron, Boston, MA 02215 USA

[3] PN Lebedev Phys Inst, Ctr Astro Space, Moscow 117924, Russia

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 519卷 / 02期

关键词：

BL Lacertae objects : individual (0735+178); galaxies : active; galaxies : jets; polarization; radio continuum : galaxies; techniques : interferometric;

D O I：

10.1086/307410

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present two-epoch polarimetric images of the BL Lac object 0735+178 obtained with the Very Long Baseline Array at 22 and 43 GHz. These images provide the highest resolution observations of this source to date and show a twisted jet with two sharp apparent bends of 90 degrees within 2 mas of the core. The magnetic field appears to smoothly follow one of the bends in the jet, suggesting that this structure may be the result of a precessing nozzle in the jet of 0735+178. Proper-motion information is not conclusive as to whether the twisted geometry is the result of knots moving ballistically or following the direction of the jet axis.

引用

页码：642 / 646

页数：5

共 16 条

[1] THE PARSEC-SCALE RADIO JET OF 4C 39.25
ALBERDI, A
MARCAIDE, JM
MARSCHER, AP
ZHANG, YF
ELOSEGUI, P
GOMEZ, JL
SHAFFER, DB
[J]. ASTROPHYSICAL JOURNAL, 1993, 402 (01) : 160 - 172
[2] BAATH LB, 1991, ASTRON ASTROPHYS, V250, P50
[3] BAATH LB, 1991, ASTRON ASTROPHYS, V243, P328
[4] OPTICAL OBSERVATIONS OF RADIO-SOURCE 0735+178
CARSWELL, RF
STRITTMATTER, PA
WILLIAMS, RE
KINMAN, TD
SERKOWSKI, K
[J]. ASTROPHYSICAL JOURNAL, 1974, 190 (03) : L101 - +
[5] DENN GR, 1998, IAU C, V164, P169
[6] LINEAR-POLARIZATION STRUCTURE OF THE BL LACERTAE OBJECT 0735+178 AT MILLIARCSECOND RESOLUTION
GABUZDA, DC
WARDLE, JFC
ROBERTS, DH
[J]. ASTROPHYSICAL JOURNAL, 1989, 338 (02) : 743 - 751
[7] UNUSUAL EVOLUTION IN THE VLBI STRUCTURE OF 0735+178
GABUZDA, DC
WARDLE, JFC
ROBERTS, DH
ALLER, MF
ALLER, HD
[J]. ASTROPHYSICAL JOURNAL, 1994, 435 (01) : 128 - 139
[8] Subparsec polarimetric radio observations of 3C 120: A close-up look at superluminal motion
Gomez, JL
Marscher, AP
Alberdi, A
Marti, JM
Ibanez, JM
[J]. ASTROPHYSICAL JOURNAL, 1998, 499 (01) : 221 - 226
[9] Hydrodynamical models of superluminal sources
Gomez, JL
Marti, JM
Marscher, AP
Ibanez, JM
Alberdi, A
[J]. ASTROPHYSICAL JOURNAL, 1997, 482 (01) : L33 - &
[10] SPATIAL STABILITY OF RELATIVISTIC JETS - APPLICATION TO 3C-345
HARDEE, PE
[J]. ASTROPHYSICAL JOURNAL, 1987, 318 (01) : 78 - 92

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