Bounded and unbounded oscillating solutions  to a      parabolic-elliptic system in two dimensional space

Yūki Naito; Takasi Senba

doi:10.3934/cpaa.2013.12.1861

Article Contents

2013, Volume 12, Issue 5: 1861-1880. Doi: 10.3934/cpaa.2013.12.1861

This issue Previous Article An infinite dimensional bifurcation problem with application to a class of functional differential equations of neutral type Next Article Parabolic and elliptic problems with general Wentzell boundary condition on Lipschitz domains

Bounded and unbounded oscillating solutions to a parabolic-elliptic system in two dimensional space

Yūki Naito^1, and
Takasi Senba^2,

1.
Department of Mathematics, Faculty of Sciences, Ehime University, Matsuyama, 790-8577
2.
Department of Mathematics, Kyushu Institute of Technology, Sensuicho, Tobata, Kitakyushu 804-8550

Received: February 28, 2011

Revised: September 30, 2012

Published: August 2013

Abstract Related Papers Cited by

Abstract

In this paper, we consider solutions to a Cauchy problem for a parabolic-elliptic system in two dimensional space. This system is a simplified version of a chemotaxis model, and is also a model of self-interacting particles.
The behavior of solutions to the problem closely depends on the $L^1$-norm of the solutions. If the quantity is larger than $8\pi$, the solution blows up in finite time. If the quantity is smaller than the critical mass, the solution exists globally in time. In the critical case, infinite blowup solutions were found.
In the present paper, we direct our attention to radial solutions to the problem whose $L^1$-norm is equal to $8\pi$ and find bounded and unbounded oscillating solutions.

Keywords:

Mathematics Subject Classification: Primary: 35K55, 35K57; Secondary: 92C17.

Citation:

Related Papers

Cited by

References

[1]	P. Biler and N. Nadzieja, Existence and nonexistence of solutions for a model of gravitational interaction particles I, Colloq. Math., 66 (1994), 319-334.
[2]	P. Biler, G. Karch, P. Laurençot and T. Nadzieja, The $8\pi$ problem for radially symmetric solutions of a chemotaxis model in the plane, Math. Meth. Appl. Sci., 29 (2006), 1563-1583.doi: 10.1002/mma.743.
[3]	A. Blanchet, J. A. Carrillo and N. Masmoudi, Infinite time aggregation for the critical two-dimensional Patlak-Keller-Segel model, Comm. Pure Appl. Math., 61 (2008), 1449-1481.doi: 10.1002/cpa.20225.
[4]	S. Childress and J. K. Percus, Nonlinear aspects of chemotaxis, Math. Biosci., 56 (1981), 217-237.doi: 10.1016/0025-5564(81)90055-9.
[5]	J. Dolbeault and B. Perthame, Optimal critical mass in the two-dimensional Keller-Segel model in $\mathbfR^2$, C. R. Math. Acad. Sci. Paris, 339 (2004), 611-616.doi: 10.1016/j.crma.2004.08.011.
[6]	E. Feireisl, Ph. Laurençot and H. Petzeltová, On convergence to equilibria for the Keller-Segel chemotaxis model, J. Differential Equations, 236 (2007), 551-569.
[7]	C. Gui, W.-M. Ni and X. Wang, On the stability and instability of positive steady states of a semilinear heat equation in $\mathbfR^n$, Comm. Pure Appl. Math., 45 (1992), 1153-1181.doi: 10.1002/cpa.3160450906.
[8]	C. Gui, W.-M. Ni and X. Wang, Further study on a nonlinear heat equation, J. Diff. Eqs., 169 (2001), 588-613.doi: 10.1006/jdeq.2000.3909.
[9]	E. F. Keller and L. A. Segel, Initiation of slime mold aggregation viewed as an instability, J. Theor. Biol., 26 (1970), 399-415.doi: 10.1016/0022-5193(70)90092-5.
[10]	T. Nagai, Global existence and decay estimates of solutions to a parabolic-elliptic system of a drift-diffusion type in $\mathbfR^2$, Differential Integral Equations, 24 (2011), 29-68.
[11]	T. Ogawa and T. Nagai, Global existence of solutions to a parabolic-elliptic system of a drift-diffusion type in $\mathbfR^2$, preprint.
[12]	P. Poláčik and E. Yanagida, On bounded and unbounded global solutions of a supercritical semilinear heat equation, Math. Ann., 337 (2003), 745-771.