Difference between revisions of "4U 0115+634"
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(Created page with "Category:Accreting X-ray Pulsars === Other Names === * V635 Cassiopeiae ([http://simbad.u-strasbg.fr/simbad/sim-id?Ident=4U+0115%2B634&NbIdent=1&Radius=2&Radius.unit=arc...") |
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* optical companion: O9e star (<ref name="Unger98" />) | * optical companion: O9e star (<ref name="Unger98" />) | ||
| − | * distance: < | + | * distance: <math> 7-8\,\text{kpc} </math> (<ref name="Negueruela01" />) |
=== Orbital Parameters === | === Orbital Parameters === | ||
| − | * orbital period: < | + | * orbital period: <math> P_{\text{Orb}} = 24.31617^{+0.00005}_{-0.00007}\,\text{d} </math> ([[Müller et al. in prep.]]) |
| − | * epoch of periastron passage: < | + | * epoch of periastron passage: <math> T_0 = 49279.2677(34)\,\text d </math> (<ref name="Bildsten97" />) |
| − | * projected semimajor axis:< | + | * projected semimajor axis:<math> a_{\text x}\sin i = 140.13(8)\,\text{lt-s} </math> (<ref name="Bildsten97" />) |
| − | * eccentricity:< | + | * eccentricity:<math> e = 0.3402(2) </math> (<ref name="Bildsten97" />) |
| − | * longitude of periastron: < | + | * longitude of periastron: <math>\omega = 47.66(9)^{\circ} </math> (<ref name="Bildsten97" />) |
=== Pulsations === | === Pulsations === | ||
Latest revision as of 13:19, 7 July 2022
Other Names
- V635 Cassiopeiae (SIMBAD)
General Characteristics
Orbital Parameters
- orbital period: [math]\displaystyle{ P_{\text{Orb}} = 24.31617^{+0.00005}_{-0.00007}\,\text{d} }[/math] (Müller et al. in prep.)
- epoch of periastron passage: [math]\displaystyle{ T_0 = 49279.2677(34)\,\text d }[/math] ([3])
- projected semimajor axis:[math]\displaystyle{ a_{\text x}\sin i = 140.13(8)\,\text{lt-s} }[/math] ([3])
- eccentricity:[math]\displaystyle{ e = 0.3402(2) }[/math] ([3])
- longitude of periastron: [math]\displaystyle{ \omega = 47.66(9)^{\circ} }[/math] ([3])
Pulsations
- pulse profiles strongly energy dependent (Müller et al. in prep.)
- double peaked at low energies
- single peaked at high energies
- phase lags at the energies of cyclotron scattering features (Ferrigno et al. submitted)
Quantitative Spectral Analysis
- outburst 1999 ([4],[5])
- NPEX x CYAB (x CYAB) describes the RXTE-observation well
- Becker & Wolff model and Soft Thermal Comptonization describes one Beppo-SAX observation well
- outburst 2008 (Müller et al. in prep.)
- (PL x FDcut + BlackBody + 10keV feature) x GAUABS x GAUABS describes the RXTE-observation well (preliminary)
Cyclotron Features
- fundamental resonance at ~11 keV ([6], [7])
- second harmonic at ~23 keV ([8], [6], [7])
- third harmonic at ~36 keV ([9])
- fourth harmonic at ~50 keV ([10])
- fifth harmonic at ~60 keV ([11], [5])
References
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedUnger98 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedNegueruela01 - ↑ 3.0 3.1 3.2 3.3 Cite error: Invalid
<ref>tag; no text was provided for refs namedBildsten97 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedNakajima06 - ↑ 5.0 5.1 Cite error: Invalid
<ref>tag; no text was provided for refs namedFerrigno2009 - ↑ 6.0 6.1 Cite error: Invalid
<ref>tag; no text was provided for refs namedWhite83 - ↑ 7.0 7.1 Cite error: Invalid
<ref>tag; no text was provided for refs namedNagase91 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedWheaton79 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedHeindl99 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedSantangelo99 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedHeindl2004