2018MNRAS.479L.143C

Query : 2018MNRAS.479L.143C

2018MNRAS.479L.143C - Mon. Not. R. Astron. Soc., 479, L143-L147 (2018/September-1)

Interposing a varying gravitational constant between modified Newtonian dynamics and weak Weyl gravity.

CHRISTODOULOU D.M. and KAZANAS D.

Abstract (from CDS):

The Newtonian gravitational constant G obeys the dimensional relation [G][M][a] = [v]4, where M, a, and v denote mass, acceleration, and speed, respectively. Since the baryonic Tully-Fisher (BTF) and Faber-Jackson (BFJ) relations are observed facts, this relation implies that G a= constant. This result cannot be obtained in Newtonian dynamics which cannot explain the origin of the BTF and BFJ relations. An alternative, modified Newtonian dynamics (MOND) assumes that G = G0 is constant in space and derives naturally a characteristic constant acceleration a = a0, as well as the BTF and BFJ relations. This is overkill and it comes with a penalty: MOND cannot explain the origin of a0. A solid physical resolution of this issue is that G∝a–1, which implies that in lower-acceleration environments the gravitational force is boosted relative to its Newtonian value because G increases. This eliminates all problems related to MOND's empirical cutoff a0 and yields a quantitative method for mapping the detailed variations of G(a) across each individual galaxy as well as on larger and smaller scales. On the opposite end, the large accelerations produced by G(a) appear to be linked to the weak-field limit of the fourth-order theory of conformal Weyl gravity.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): gravitation - methods: analytical - galaxies: kinematics and dynamics

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 - 2024 		#notes
1 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4796 2

Query : 2018MNRAS.479L.143C

Basic data :
ACO 1656 -- Cluster of Galaxies
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: 		ClG (2010A&A,ACO,...), X (2A,3A,...), C?G (2014A&A,XCLASS), GrG (RASSCALS,[N93]), gLe (2011A&A), gam (IGR,INTREF), Rad (DB)
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) : 		12 59 44.40 +27 54 44.9 (Optical) [ ] D 2020ApJS..246....2A
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) : 		12 57 19.64 +28 10 54.4 [ ]
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) : 		056.48504 +87.99927 [ ]
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) 6933 [~] / z(spectroscopic) 0.0234 [~] / cz 7015 [~]
   (Opt) C 2016ApJ...819...63R
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin): 		30.0 30.0 ~ (Rad) D 2015ApJ...813...77Y
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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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.
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Some important notes on this object about identifications and objects associations.
notes:

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

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: 3124 		Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (48) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

ACO 1656 FR 76 PLCKESZ G057.33+88.01 4U 1257+28
2A 1257+283 1H 1257+281 PSZ1 G057.84+87.98 XCLASS 1783
3A 1257+282 H 1257+283 PSZ2 G057.80+88.00 XSS J12596+2759
BAX 194.9531+27.9807 H 1256+27 PSZRX G057.30+88.00 X Com X-1
CAN 90 HMS 1257+2814 RASSCALS NRGb226 [AWK2020] 3
CID 90 IGR J12595+2755 RBS 1198 [B2017] 1599
ClG 1257.4+2815 INTREF 534 RXC J1259.7+2756 [F81] 253
DB 88 1M 1257+281 RX J1259.7+2756 [KRL2007b] 128
2E 2932 2MAXI J1259+279 1RXS J125947.9+275636 [KVC2005] 8
2E 1257.4+2812 MCXC J1259.7+2756 SWIFT J1259.7+2755 [N93] 109
1ES 1257+28.2 NAME Coma Cluster 2U 1257+28 [S85] 222
EXSS 1257.4+2815 PBC J1259.5+2756 3U 1257+28 [SPD2011] 67

References (4796 between 1850 and 2024) (Total 4796)
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


velocities : 10   

   

Observing logs


herschel : 4    XMM : 18   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : ACO 1656

Link by name to the catalogue in VizieR :

ACO 1656 2E 2932 RXC J1259.7+2756 1RXS J125947.9+275636

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