Non-singular bouncing General Relativistic Hydrodynamics cosmological models A. Y. ShaikhA. S. ShaikhK. S. Wankhade Original Article 30 July 2021 Article: 71
Solar cycle variation of the ionization by cosmic rays in the atmosphere at the mid-latitude region of Athens P. MakrantoniH. MavromichalakiP. Paschalis Original Article 29 July 2021 Article: 70
Subspace approximation to the cosmic ray Fokker-Planck equation with perpendicular diffusion A. Shalchi Original Article 26 July 2021 Article: 69
A study of the Czernik 2 and NGC 7654 open clusters using CCD UBV photometric and Gaia EDR3 data B. AkbulutS. AkE. Paunzen Original Article 26 July 2021 Article: 68
Unexplained spectral phenomena in the interstellar medium: an introduction Sun Kwok Editorial 26 July 2021 Article: 67
Relativistic positioning: including the influence of the gravitational action of the Sun and the Moon and the Earth’s oblateness on Galileo satellites Neus Puchades ColmeneroJosé Vicente Arnau CórdobaMàrius Josep Fullana i Alfonso Original Article Open access 20 July 2021 Article: 66
The midrange periodicities of solar H\(\alpha \) flare index during Solar Cycles 21–24 C. LiY. FeiJ. M. An Original Article 20 July 2021 Article: 65
Theory of the two fluid resistive-drift-ballooning instability in the near-Earth plasma sheet: local and global magnetospheric mathematical modeling Umer Rehman Original Article 20 July 2021 Article: 64
Accretion flow properties of GRS 1716-249 during its 2016–17 ‘failed’ outburst Kaushik ChatterjeeDipak DebnathSandip K. Chakrabarti Original Article 19 July 2021 Article: 63
Study of the recovery characteristics of intense cosmic-ray decreases B. BadruddinO. P. M. AslamM. Derouich Original Article 12 July 2021 Article: 62
Characteristics of recurrent Forbush decreases in Galactic cosmic ray intensity during positive and negative solar magnetic polarities O. KallayaT. Yeeram Original Article 09 July 2021 Article: 61
