Publications (7)2.35 Total impact
-
Article: Out-of-plane equilibrium points and stability in the generalised photogravitational restricted three body problem
[show abstract] [hide abstract]
ABSTRACT: The restricted three body problem is generalised to include the effects of an inverse square distance radiation pressure force on the infinitesimal mass due to the primaries, which are both radiating. In this paper we investigate the stability of out-of-plane equilibrium points, based on equations in variations. We have found the characteristic equation for the complex normal frequencies which is a sixth order polynomial. Thus we conclude that out-of-plane equilibrium points are unstable due to positive real part in complex roots. KeywordsStability–Out-of-plane points–Generalised–Photogravitational–RTBPAstrophysics and Space Science 05/2012; 332(1):115-119. · 1.69 Impact Factor -
Article: Non-linear stability in photogravitational non-planar restricted three body problem with oblate smaller primary
[show abstract] [hide abstract]
ABSTRACT: We have discussed non-linear stability in photogravitational non-planar restricted three body problem with oblate smaller primary. By photogravitational we mean that both primaries are radiating. We normalised the Hamiltonian using Lie transform as in Coppola and Rand (1989). We transformed the system into Birkhoff's normal form. Lie transforms reduce the system to an equivalent simpler system which is immediately solvable. Applying Arnold's theorem, we have found non-linear stability criteria. We conclude that $L_6$ is stable. We plotted graphs for $(\omega_1, D_2).$ They are rectangular hyperbola.09/2011; -
Article: Higher Order Normalizations in the Generalized Photogravitational Restricted Three Body Problem with Poynting-Robertson Drag
[show abstract] [hide abstract]
ABSTRACT: Higher order normalizations are performed in the generalized photogravitational restricted three body problem with Poynting-Robertson drag. In this problem we have taken bigger primary as a source of radiation and smaller primary as an oblate spheroid. Whittaker method is used to transform the second order part of the Hamiltonian into the normal form. We have also performed Birkhoff's normalization of the Hamiltonian. For this we have tilized Henrard's method and expanded the coordinates of the infinitesimal body in double D'Alembert series. We have found the values of first and second order components. They are affected by radiation pressure, oblateness and P-R drag. Finally we obtained the third order part of the Hamiltonian zero. Keywords:Higher Order Normalization, Generalized Photogravitational, RTBP,P-R drag10/2007; -
Article: Normalization of Hamiltonian in the Generalized Photogravitational Restricted Three Body Problem with Poynting–Robertson Drag
[show abstract] [hide abstract]
ABSTRACT: We have performed normalization of Hamiltonian in the generalized photogravitational restricted three body problem with Poynting–Robertson drag. In this problem we have taken bigger primary as source of radiation and smaller primary as an oblate spheroid. Whittaker’s method is used to transform the second order part of the Hamiltonian into the normal form.Earth Moon and Planets 09/2007; 101(1):55-64. · 0.67 Impact Factor -
Article: Nonlinear Stability in the Generalised Photogravitational Restricted Three Body Problem with Poynting-Robertson Drag
[show abstract] [hide abstract]
ABSTRACT: The Nonlinear stability of triangular equilibrium points has been discussed in the generalised photogravitational restricted three body problem with Poynting-Robertson drag. The problem is generalised in the sense that smaller primary is supposed to be an oblate spheroid. The bigger primary is considered as radiating. We have performed first and second order normalization of the Hamiltonian of the problem. We have applied KAM theorem to examine the condition of non-linear stability. We have found three critical mass ratios. Finally we conclude that triangular points are stable in the nonlinear sense except three critical mass ratios at which KAM theorem fails.10/2006; -
Article: First Order Normalization in the Generalized Photogravitational Restricted Three Body Problem with Poynting-Robertson Drag
[show abstract] [hide abstract]
ABSTRACT: In this paper we have studied non-linear stability of triangular equilibrium points. We have performed first order normalization in the generalized photogravitational restricted three body problem with Poynting-Robertson drag. In this problem we have taken bigger primary as source of radiation and smaller primary is an oblate spheroid. At first we have expanded the Lagrangian function in power series of x and y, where (x, y) are the coordinates of the triangular equilibrium points. Then the relation between the roots of the characteristic equation for the linearised system is obtained. Key Words:First order normalization / Generalised Photogravitational/ RTBP.03/2006; -
Article: Second Order Normalization in the Generalized Photogravitational Restricted Three Body Problem with Poynting-Robertson Drag
[show abstract] [hide abstract]
ABSTRACT: In this paper we have performed second order normalization in the generalised photogravitaional restricted three body problem with Poynting-Robertson drag. We have performed Birkhoff's normalization of the Hamiltonian. For this we have utilised Henrard's method and expanded the coordinates of the third body in Double d'Alembert series. We have found the values of first and second order components. The second order components are obtained as solutions of the two partial differential equations. We have employed the first condition of KAM theorem in solving these equations. The first and second order components are affected by radiation pressure, oblateness and P-R drag. Finaly we obtained the third order part $H_3$ of the Hamiltonian in $I_1^{1/2}I_2^{1/2}$ zero.03/2006;
