The 2:3:6 quasi-periodic oscillation structure in GRS 1915+105 and cubic subharmonics in the context of relativistic discoseismology
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2014-06-01Autor
Ortega Rodríguez, Manuel
Solís Sánchez, Hugo
López Barquero, Vanessa
Matamoros Alvarado, Bryan
Venegas Li, Ariadna
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We propose a simple toy model to explain the 2:3:6 quasi-periodic oscillation (QPO) structure in GRS 1915+105 and, more generally, the 2:3 QPO structure in XTE J1550−564, GRO J1655−40 and H1743−322. The model exploits the onset of subharmonics in the context of discoseismology. We suggest that the observed frequencies may be the consequence of a resonance between a fundamental g mode and an unobservable p wave. The results include the prediction that, as better data become available, a QPO with a frequency of twice the higher twin frequency and a large quality factor will be observed in twin peak sources, as it might already have been observed in the especially active GRS 1915+105.
External link to the item
10.1093/mnras/stu488
Artículo científico -- Universidad de Costa Rica, Cenrtro de Investigaciones Geofísicas. 2013
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- Física [114]