1. Solar cycle variations in the growth and decay of sunspot groups

   • J. Javaraiah

   Original Article 30 November 2011 Pages: 217 - 226

2. Characteristics of CMEs associated with solar flares and DH type II radio bursts based on source position

   • M. Anna Lakshmi
   • S. Umapathy

   Original Article 10 December 2011 Pages: 227 - 231

3. Regularization of the circular restricted three-body problem using ‘similar’ coordinate systems

   • R. Roman
   • I. Szücs-Csillik

   Original Article 06 November 2011 Pages: 233 - 243

4. Note on the single-shock solutions of the Korteweg-de Vries-Burgers equation

   • Ioannis Kourakis
   • Sharmin Sultana
   • Frank Verheest

   oRIGINAL aRTICLE 15 December 2011 Pages: 245 - 249

5. Ion acoustic solitary and shock waves with nonextensive electrons and thermal positrons in nonplanar geometry

   • Biswajit Sahu

   Original Article 29 November 2011 Pages: 251 - 257

6. Nonextensive dust acoustic solitary and shock waves in nonplanar geometry

   • Biswajit Sahu
   • Mouloud Tribeche

   Original Article 01 December 2011 Pages: 259 - 264

7. Ion acoustic solitons in negative ion plasmas with superthermal electrons

   • S. Hussain
   • N. Akhtar
   • S. Mahmood

   Original Article 08 December 2011 Pages: 265 - 270

8. Head-on collision of electron acoustic solitary waves in a plasma with nonextensive hot electrons

   • Parvin Eslami
   • Marzieh Mottaghizadeh
   • Hamid Reza Pakzad

   Original Article 03 December 2011 Pages: 271 - 278

9. Positron acoustic solitary waves interaction in a four-component space plasma

   • E. F. El-Shamy
   • W. F. El-Taibany
   • K. H. El-Shorbagy

   Original Article 30 November 2011 Pages: 279 - 285

10. Electron acoustic solitary waves in a plasma with nonthermal electrons featuring Tsallis distribution

    • Rabia Amour
    • Mouloud Tribeche
    • Padma Kant Shukla

    Original Article 05 January 2012 Pages: 287 - 294

11. Hawking radiation from a dielectric black hole

    • Ren Zhao
    • Li-Chun Zhang

    Original Article 06 December 2011 Pages: 295 - 300

12. Self-similar solutions of viscous and resistive ADAFs with thermal conduction

    • Kazem Faghei

    Original Article 15 December 2011 Pages: 301 - 307

13. Axially symmetric radiating cosmological model in a self-creation cosmology

    • D. R. K. Reddy
    • R. L. Naidu

    Original Article 27 January 2012 Pages: 309 - 311

14. Electron-positron annihilation lines and decaying sterile neutrinos

    • M. H. Chan
    • M.-C. Chu

    Original Article 02 December 2011 Pages: 313 - 317

15. Non-singular cosmology using tachyon and general non-minimal kinetic coupling

    • A. Banijamali
    • B. Fazlpour

    Original Article 03 December 2011 Pages: 319 - 326

16. Energy conditions in f(G) modified gravity with non-minimal coupling to matter

    • A. Banijamali
    • B. Fazlpour
    • M. R. Setare

    Original Article 01 December 2011 Pages: 327 - 332

17. LRS Bianchi type-II dark energy model in a scalar–tensor theory of gravitation

    • R. L. Naidu
    • B. Satyanarayana
    • D. R. K. Reddy

    Original Article 03 December 2011 Pages: 333 - 336

18. Dark energy and key physical parameters of clusters of galaxies

    • G. S. Bisnovatyi-Kogan
    • A. D. Chernin

    Original Article 06 December 2011 Pages: 337 - 343

19. An expanding Universe with constant pressure and no cosmological constant

    • Orlando Luongo
    • Hernando Quevedo

    Original Article 02 December 2011 Pages: 345 - 349

20. LRS Bianchi type-II Universe with cosmic strings and bulk viscosity in a scalar tensor theory of gravitation

    • R. L. Naidu
    • B. Satyanarayana
    • D. R. K. Reddy

    OriginalPaper 02 December 2011 Pages: 351 - 354

21. Interacting new agegraphic dark energy in a cyclic universe

    • K. Saaidi
    • H. Sheikhahmadi
    • A. H. Mohammadi

    Original Article 06 December 2011 Pages: 355 - 361

22. Cosmological dynamics of a bulk scalar field in the DGP setup

    • Kourosh Nozari
    • Narges Rashidi

    Original Article 03 December 2011 Pages: 363 - 373

23. Dynamics of the self-interacting chameleon cosmology

    • H. Farajollahi
    • A. Salehi

    Original Article 07 January 2012 Pages: 375 - 380

24. (An)Isotropic models in scalar and scalar-tensor cosmologies

    • José Antonio Belinchón

    Original Article 14 December 2011 Pages: 381 - 400

25. Generalized thermodynamics uncertainty and (anti) de Sitter space

    • A. Farmany

    Original Article 15 December 2011 Pages: 401 - 403

26. Interacting dark energy in Hořava-Lifshitz cosmology

    • M. R. Setare
    • D. Momeni
    • S. K. Moayedi

    Original Article 22 December 2011 Pages: 405 - 410

27. FRW models with particle creation in Brans-Dicke theory

    • C. P. Singh

    Original Article 21 December 2011 Pages: 411 - 419