2014A&A...572A.105J


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST02:36:11

2014A&A...572A.105J - Astronomy and Astrophysics, volume 572A, 105-105 (2014/12-1)

Discovery of a periodical apoastron GeV peak in LS I +61°303.

JARON F. and MASSI M.

Abstract (from CDS):

The aim of this paper is to analyse the previously discovered discontinuity of the periodicity of the GeV γ-ray emission of the radio-loud X-ray binary LS I +61°303 and to determine its physical origin. We used a wavelet analysis to explore the temporal development of periodic signals. The wavelet analysis was first applied to the whole data set of available Fermi-LAT data and then to the two subsets of orbital phase intervals Φ=0.0-0.5 and Φ=0.5-1.0. We also performed a Lomb-Scargle timing analysis. We investigated the similarities between GeV γ-ray emission and radio emission by comparing the folded curves of the Fermi-LAT data and the Green Bank Interferometer radio data. During the epochs when the timing analysis fails to determine the orbital periodicity, the periodicity is present in the two orbital phase intervals Φ=0.0-0.5 and Φ=0.5-1.0. That is, there are two periodical signals, one towards periastron (i.e., Φ=0.0-0.5) and another one towards apoastron (Φ=0.5-1.0). The apoastron peak seems to be affected by the same orbital shift as the radio outbursts and, in addition, reveals the same two periods P1 and P2 that are present in the radio data. The γ-ray emission of the apoastron peak normally just broadens the emission of the peak around periastron. Only when it appears at Φ≃0.8-1.0 because of the orbital shift, it is enough detached from the first peak to become recognisable as a second orbital peak, which is the reason why the timing analysis fails. Two γ-ray peaks along the orbit are predicted by the two-peak accretion model for an eccentric orbit that was proposed by several authors for LS I +61°303.

Abstract Copyright:

Journal keyword(s): radio continuum: stars - X-rays: binaries - X-rays: individuals: LS I +61°303 - gamma rays: stars

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 LS I +61 303 HXB 02 40 31.6641883136 +61 13 45.591138110 11.27 11.61 10.75 10.19 9.55 B0Ve 761 2

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST02:36:11

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


Basic data :
LS I +61 303 -- 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:
gam (1AGL,1AGLR,...), X (Ref,1E,...), * (HIP,ALS,...), Rad (BWE,GT,...), Em* (EM*,HBHA,...), HXB (Ref,2013ApJS..207...19B), V* (V*,AAVSO), *iC ([VGK85]), 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) :
02 40 31.6641883136 +61 13 45.591138110 (Optical) [ 0.0285 0.0300 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) :
02 36 40.6209752983 +61 00 54.151273472 [ 0.0285 0.0300 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) :
135.6752748739358 +01.0861260688011 [ 0.0285 0.0300 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 :
-0.296 -0.079 [0.041 0.067 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) -41.41 [~] / z(~) -0.000138 [~] / cz -41.41 [~]
   D 2009ApJ...698..514A
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):
0.3801 [0.0380] 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:
B0Ve 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 (9) :
U 11.27 [~] D 2003AJ....125.2531R
B 11.61 [~] D 2015A&A...574A..33R
V 10.75 [~] D 2015A&A...574A..33R
R 10.19 [~] D 2015A&A...574A..33R
G 10.3933 [0.0011] C 2018yCat.1345....0G
I 9.55 [~] D 2015A&A...574A..33R
J 8.621 [0.024] C 2003yCat.2246....0C
H 8.228 [0.021] C 2003yCat.2246....0C
K 7.917 [0.023] 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:


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

: 1 : 998 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (68) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HIP 12469 1FGL J0240.5+6116 HIC 12469 TYC 4047-1917-1
1AGL J0242+6111 1FGL J0240.5+6113 IGR J02403+6113 UBV M 50704
1AGLR J0240+6115 2FGL J0240.5+6113 INTREF 123 V* V615 Cas
ALS 7373 3FGL J0240.5+6113 INTREF 125 VER J0240+612
BWE 0236+6101 4FGL J0240.5+6113 LS I +61 303 WN B0236.6+6100
1CG 135+01 1FHL J0240.2+6113 LS I +63 303 2XMM J024031.6+611345
2CG 135+01 2FHL J0240.5+6113 MAGIC J0240+613 [BM83] X0236+610
CSI+61-02367 3FHL J0240.5+6113 2MASS J02403165+6113456 [BSF97] J024031.66+611345.6
1E 0236.6+6100 1FLE J0238+6115 NAME LS I +63 303 [CS2018] W4-I19
2E 627 GEN# +8.01610303 NVSS J024031+611345 [KW97] 13-1
2E 0236.6+6101 GEN# +6.20055754 PBC J0240.6+6114 [MPP98] 3
2EG J0241+6119 GeV J0241+6102 RGB J0240+612 [TSA98] J024031.33+611342.71
3EG J0241+6103 GRO J0240+61 RX J0240.4+6112 [VGK85] IC 1805 +61 182
EGR J0240+6112 GRO J0241+61 1RXS J024033.5+611358 AAVSO 0234+61
EM* VES 754 GSC 04047-01917 SWIFT J0240.5+6118 AAVSO 0232+60
1ES 0236+61.0 GT 0236+610 SWIFT J0240.9+6115 Gaia DR1 465645510826577280
0FGL J0240.3+6113 HBHA 6212-42 TeV J0240+612 Gaia DR2 465645515129855872

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References (761 between 1850 and 2020) (Total 761)
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 : 2    velocities : 1    PM : 3    PLX : 3    MK : 1   

   

Observing logs


XMM : 6    IUE : 17   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : LS I +61 303

Link by name to the catalogue in VizieR :

HIP 12469 ALS 7373 BWE 0236+6101 2E 627 3EG J0241+6103
GSC 04047-01917 HIC 12469 LS I +61 303 LS I +63 303 2MASS J02403165+6113456
NVSS J024031+611345 1RXS J024033.5+611358 TYC 4047-1917-1 V* V615 Cas WN B0236.6+6100
Gaia DR1 465645510826577280 Gaia DR2 465645515129855872

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2020.07.04-02:36:11

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