2007A&A...474..903B


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.03CEST23:59:37

2007A&A...474..903B - Astronomy and Astrophysics, volume 474, 903-910 (2007/11-2)

Fluctuations and symmetry in the speed and direction of the jets of SS 433 on different timescales.

BLUNDELL K.M., BOWLER M.G. and SCHMIDTOBREICK L.

Abstract (from CDS):

The Galactic microquasar SS433 launches oppositely-directed plasma jets at speeds approximately a quarter of the speed of light along an axis which precesses, tracing out a cone of polar angle 20 degrees. Both the speed and direction of launch of the bolides that comprise the jets exhibit small fluctuations. To present new results on variations in speed and direction of successive bolides over periods of one day or less and the range in speed and direction exhibited by material within individual bolides. To present the expansion rate of bolides revealed by optical line broadening. To integrate these results with earlier data sensitive to fluctuations and symmetry over longer timescales. New high resolution spectra, taken with a 3.6-m telescope almost nightly over 0.4 of a precession cycle, are analysed in terms of fluctuations in the properties of the ejecta, by comparing the redshift data with predictions for small departures from the simple kinematic model. The variations of redshifts of the jets within a day are studied, in addition to the longer term variations of the daily averaged properties. (i) These data exhibit multiple ejections within most 24-h periods and, throughout the duration of the observing campaign, the weighted means of the individual bolides, in both the red jet and the blue jet, clearly exhibit the pronounced nodding known in this system; (ii) we present further evidence for a 13-day periodicity in the jet speed, and show this cannot be dominated by Doppler shifts from orbital motion; (iii) we show the phase of this peak jet speed has shifted by a quarter of a cycle in the last quarter-century; (iv) we show that the two jets ejected by SS433 are highly symmetric on timescales measured thus far; (v) we demonstrate that the anti-correlation between variations in direction and in speed is not an artifact of an assumption of symmetry; (vi) we show that a recently proposed mechanism (Begelman et al., 2006MNRAS.370..399B) for varying the ejection speed and anti-correlating it with polar angle variations is ruled out; (vii) the speed of expansion of the plasma bolides in the jets is approximately 0.0024c. These novel data carry a clear signature of speed variations. They have a simple and natural interpretation in terms of both angular and speed fluctuations which are identical on average in the two jets. They complement archival optical data and recent radio imaging.

Abstract Copyright:

Journal keyword(s): ISM: jets and outflows - line: profiles - stars: binaries: eclipsing

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 - 2020
#notes
1 SS 433 HXB 19 11 49.5645897701 +04 58 57.824087535   16.3 13.0     A7Ib: 1935 3

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2020.08.03CEST23:59:37

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
SS 433 -- High Mass X-ray Binary
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
X (Ref,4U,...), Rad (BWE,4C,...), * (PLX,USNO,...), Em* (HBHA,SS,...), gam (INTEGRAL1,INTREF), V* (V*,AAVSO), HX? (Ref), N*? (Ref), SB* (SBC9), HXB (Ref), XB* (Ref), IR (2MASS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
19 11 49.5645897701 +04 58 57.824087535 (Optical) [ 0.0463 0.0448 90 ] A 2018yCat.1345....0G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
19 09 21.2950112714 +04 53 54.175982876 [ 0.0463 0.0448 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
039.6940970710966 -02.2445960703556 [ 0.0463 0.0448 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
-2.853 -4.570 [0.105 0.096 90] A 2018yCat.1345....0G
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) 27.0 [~] / z(~) 0.000090 [~] / cz 27.00 [~]
   E 1995A&AS..114..269D
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas):
0.2161 [0.0626] A 2018yCat.1345....0G
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
A7Ib: D ~
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (6) :
B 16.3 [~] E ~
V 13.0 [~] D 1995GCTP..C......0V
G 12.6339 [0.0168] C 2018yCat.1345....0G
J 9.398 [0.021] C 2003yCat.2246....0C
H 8.739 [0.029] C 2003yCat.2246....0C
K 8.163 [0.024] C 2003yCat.2246....0C
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The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
Some important notes on this object about identifications and objects associations.
notes:


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (42) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

4U 1908+05 87GB 190920.8+045332 PLX 4470.01 WEB 16429
1A 1909+04 GPS 1909+049 RGB J1911+049 2XMM J191149.5+045858
3A 1909+048 GRS G039.60 -01.80 RX J1911.7+0459 [BM83] X1909+048
BWE 1909+0453 1H 1908+047 1RXS J191149.7+045857 [BSF97] J191149.56+045857.4
4C 04.66 HBHA 204-02 SBC9 1129 [DPS86] B1909+048
2E 4204 INTEGRAL1 110 SS 433 [KRL2007b] 358
2E 1909.3+0453 INTREF 969 SWIFT J1912.0+0500 [KW97] 36-17
1ES 1909+04.8 2MASS J19114957+0458578 SWIFT J1911.7+0500 AAVSO 1906+04
F3R 1368 NEK 40.1-02.1 TXS 1909+048 Gaia DR2 4293406612283985024
GAL 039.7-02.0 NVSS J191149+045858 USNO 659
GB6 B1909+0453 PBC J1911.8+0459 V* V1343 Aql

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References (1935 between 1850 and 2020) (Total 1935)
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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Collections of Measurements


distance : 1    velocities : 1    PM : 1    PLX : 1   

   

Observing logs


ISO : 36    XMM : 10    herschel : 4    IUE : 2   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : SS 433

Link by name to the catalogue in VizieR :

BWE 1909+0453 4C 04.66 2E 4204 F3R 1368 2MASS J19114957+0458578
NVSS J191149+045858 1RXS J191149.7+045857 V* V1343 Aql Gaia DR2 4293406612283985024

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2020.08.03-23:59:37

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