Abstract
The Ambartsumian equation is used in the theory of surface brightness in milky way. This equation is a linear differential equation involving a proportional delay term. In this paper we use the Daftardar-Gejji and Jafari method to obtain analytical solution of Ambartsumian equation. The solution is provided in the form of a power series which is convergent for all reals. We prove the convergence of this series and plot solution graphs.
References
Ambartsumian VA (1994) On the fluctuation of the brightness of the milky way. Doklady Akad Nauk USSR 44:223–226
Daftardar-Gejji V, Jafari H (2006) An iterative method for solving non linear functional equations. J Math Anal Appl 316:753–763
Patade J, Bhalekar S (2015) Approximate analytical solutions of Newell-Whitehead-Segel equation using a new iterative method. World J Model Simul 11:94–103
Bhalekar S, Patade J (2016) An analytical solution of fishers equation using decomposition method. Am J Comput Appl Math 6:123–127
Daftardar-Gejji V, Bhalekar S (2008) Solving fractional diffusion-wave equations using the new iterative method. Fract Calc Appl Anal 11:193–202
Daftardar-Gejji V, Bhalekar S (2010) Solving fractional boundary value problems with Dirichlet boundary conditions. Comput Math Appl 59:1801–1809
AL-Jawary MA, AL-Qaissy HR (2015) A reliable iterative method for solving Volterra integro-differential equations and some applications for the Lane–Emden equations of the first kind. Mon Not R Astron Soc 448:3093–3104
Patade J, Bhalekar S (2015) A new numerical method based on Daftardar-Gejji and Jafari technique for solving differential equations. World J Model Simul 11:256–271
Kato T, McLeod JB (1971) The functional-differential equation \(y^{\prime }(x) = ay(\lambda x)+ b y(x)\). Bull Am Math Soc 77:891–935
Bhalekar S, Daftardar-Gejji V (2011) Convergence of the new iterative method. Int J Differ Equ 2011:1–10
Apostal TM (1964) Mathematical analysis. Addison-Wesley, Reading
Acknowledgements
The authors acknowledge NBHM, Department of Atomic Energy Mumbai, India for funding through Research Project [2148(6)/2013/NBHM(R.P.)/R & D II/689] and CSIR, New Delhi for funding through Research Project [25(0245)/15/EMR-II].
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Patade, J., Bhalekar, S. On Analytical Solution of Ambartsumian Equation. Natl. Acad. Sci. Lett. 40, 291–293 (2017). https://doi.org/10.1007/s40009-017-0565-2
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DOI: https://doi.org/10.1007/s40009-017-0565-2