Subjects -> ASTRONOMY (Total: 94 journals)
Showing 1 - 46 of 46 Journals sorted alphabetically
Advances in Astronomy     Open Access   (Followers: 51)
Annual Review of Astronomy and Astrophysics     Full-text available via subscription   (Followers: 39)
Annual Review of Earth and Planetary Sciences     Full-text available via subscription   (Followers: 63)
Artificial Satellites     Open Access   (Followers: 23)
Astrobiology     Hybrid Journal   (Followers: 14)
Astronomical & Astrophysical Transactions: The Journal of the Eurasian Astronomical Society     Hybrid Journal   (Followers: 6)
Astronomical Journal     Full-text available via subscription   (Followers: 8)
Astronomical Review     Open Access   (Followers: 4)
Astronomische Nachrichten     Hybrid Journal   (Followers: 4)
Astronomy & Geophysics     Hybrid Journal   (Followers: 48)
Astronomy and Astrophysics     Full-text available via subscription   (Followers: 60)
Astronomy and Astrophysics     Open Access   (Followers: 32)
Astronomy and Computing     Hybrid Journal   (Followers: 2)
Astronomy Letters     Hybrid Journal   (Followers: 22)
Astronomy Reports     Hybrid Journal   (Followers: 15)
Astronomy Studies Development     Open Access   (Followers: 12)
Astroparticle Physics     Hybrid Journal   (Followers: 8)
Astrophysical Bulletin     Hybrid Journal   (Followers: 3)
Astrophysical Journal     Full-text available via subscription   (Followers: 19)
Astrophysical Journal Letters     Full-text available via subscription   (Followers: 14)
Astrophysical Journal Supplement Series     Full-text available via subscription   (Followers: 14)
Astrophysics     Hybrid Journal   (Followers: 29)
Astrophysics and Space Science     Hybrid Journal   (Followers: 46)
Astrophysics and Space Sciences Transactions (ASTRA)     Open Access   (Followers: 56)
Astropolitics: The International Journal of Space Politics & Policy     Hybrid Journal   (Followers: 12)
Celestial Mechanics and Dynamical Astronomy     Hybrid Journal   (Followers: 11)
Chinese Astronomy and Astrophysics     Full-text available via subscription   (Followers: 24)
Colloid Journal     Hybrid Journal   (Followers: 3)
Comptes Rendus Physique     Full-text available via subscription   (Followers: 2)
Computational Astrophysics and Cosmology     Open Access   (Followers: 3)
COSPAR Colloquia Series     Full-text available via subscription   (Followers: 11)
Earth, Moon, and Planets     Hybrid Journal   (Followers: 55)
Earth, Planets and Space     Open Access   (Followers: 74)
EAS Publications Series     Full-text available via subscription   (Followers: 8)
EPL Europhysics Letters     Partially Free   (Followers: 8)
Experimental Astronomy     Hybrid Journal   (Followers: 39)
Expert Opinion on Astronomy and Astrophysics     Open Access   (Followers: 7)
Extreme Life, Biospeology & Astrobiology - International Journal of the Bioflux Society     Full-text available via subscription   (Followers: 6)
Few-Body Systems     Hybrid Journal   (Followers: 1)
Foundations of Physics     Hybrid Journal   (Followers: 41)
Frontiers in Astronomy and Space Sciences     Open Access   (Followers: 12)
Galaxies     Open Access   (Followers: 6)
Globe, The     Full-text available via subscription   (Followers: 4)
Gravitation and Cosmology     Hybrid Journal   (Followers: 4)
Icarus     Hybrid Journal   (Followers: 75)
International Journal of Advanced Astronomy     Open Access   (Followers: 28)
International Journal of Astrobiology     Hybrid Journal   (Followers: 4)
International Journal of Astronomy     Open Access   (Followers: 19)
International Journal of Astronomy and Astrophysics     Open Access   (Followers: 29)
International Journal of Satellite Communications Policy and Management     Hybrid Journal   (Followers: 13)
International Letters of Chemistry, Physics and Astronomy     Open Access   (Followers: 12)
ISRN Astronomy and Astrophysics     Open Access   (Followers: 7)
Journal for the History of Astronomy     Full-text available via subscription   (Followers: 19)
Journal of Astrobiology & Outreach     Open Access   (Followers: 3)
Journal of Astronomical Instrumentation     Open Access   (Followers: 3)
Journal of Astronomical Telescopes, Instruments, and Systems     Hybrid Journal   (Followers: 5)
Journal of Astrophysics     Open Access   (Followers: 26)
Journal of Astrophysics and Astronomy     Open Access   (Followers: 52)
Journal of Atmospheric and Solar-Terrestrial Physics     Hybrid Journal   (Followers: 199)
Journal of Cosmology and Astroparticle Physics     Hybrid Journal   (Followers: 38)
Journal of Geophysical Research : Planets     Full-text available via subscription   (Followers: 178)
Journal of Geophysical Research : Space Physics     Full-text available via subscription   (Followers: 178)
Journal of High Energy Astrophysics     Full-text available via subscription   (Followers: 22)
Kinematics and Physics of Celestial Bodies     Hybrid Journal   (Followers: 10)
KronoScope     Hybrid Journal   (Followers: 1)
Macalester Journal of Physics and Astronomy     Open Access   (Followers: 4)
MNASSA : Monthly Notes of the Astronomical Society of South Africa     Full-text available via subscription   (Followers: 1)
Molecular Astrophysics     Full-text available via subscription   (Followers: 1)
Monthly Notices of the Royal Astronomical Society     Hybrid Journal   (Followers: 14)
Monthly Notices of the Royal Astronomical Society : Letters     Hybrid Journal  
Nature Astronomy     Hybrid Journal   (Followers: 8)
New Astronomy     Hybrid Journal   (Followers: 27)
New Astronomy Reviews     Full-text available via subscription   (Followers: 17)
Nonlinear Dynamics     Hybrid Journal   (Followers: 19)
NRIAG Journal of Astronomy and Geophysics     Open Access   (Followers: 5)
Open Astronomy     Open Access   (Followers: 2)
Physics of the Dark Universe     Open Access   (Followers: 4)
Planetary and Space Science     Hybrid Journal   (Followers: 101)
Planetary Science     Open Access   (Followers: 52)
Proceedings of the International Astronomical Union     Full-text available via subscription   (Followers: 2)
Publications of the Astronomical Society of Australia     Hybrid Journal   (Followers: 2)
Publications of the Astronomical Society of Japan     Hybrid Journal   (Followers: 3)
Publications of the Astronomical Society of the Pacific     Full-text available via subscription   (Followers: 4)
Research & Reviews : Journal of Space Science & Technology     Full-text available via subscription   (Followers: 17)
Research in Astronomy and Astrophysics     Full-text available via subscription   (Followers: 29)
Revista Mexicana de Astronomía y Astrofísica     Open Access   (Followers: 2)
Science China Physics, Mechanics & Astronomy     Hybrid Journal   (Followers: 4)
Solar Physics     Hybrid Journal   (Followers: 34)
Solar System Research     Hybrid Journal   (Followers: 14)
Space Science International     Open Access   (Followers: 192)
Space Science Reviews     Hybrid Journal   (Followers: 97)
Space Weather     Full-text available via subscription   (Followers: 24)
Transport and Aerospace Engineering     Open Access   (Followers: 13)
Universe     Open Access   (Followers: 5)
Similar Journals
Journal Cover
Research in Astronomy and Astrophysics
Journal Prestige (SJR): 0.681
Citation Impact (citeScore): 1
Number of Followers: 29  
 
  Full-text available via subscription Subscription journal
ISSN (Print) 1674-4527
Published by IOP Homepage  [72 journals]
  • The local and global properties of different types of supernova host
           galaxies
    • Authors: Li Zhou; Yan-Chun Liang, Jun-Qiang Ge, Yi-Nan Zhu, Xu Shao, Hong Wu, Wei-Bin Shi Li-Cai Deng
      First page: 169
      Abstract: By using Data Analysis Pipeline (DAP) products of Mapping Nearby Galaxies at Apache Point Observatory (MaNGA), which are publicly available from the SDSS Data Release 15, we analyze the local properties at the SN explosion sites and global properties of different types of SN host galaxies to explore the explosion environments of different types of SNe. In our sample, there are 67 SN host galaxies in the field of view of MaNGA, including 32 Type Ia, 29 core collapse SNe (CCSNe), 1 superluminous SN (SLSN), 1 Type I and 4 unclassified type of SNe, with which we can apply the K-S test for analysis and derive statistically robust results. Due to the limited sample size, we could not remove the mass dependence in this work, which is likely the true driver of the trends for the properties presented in this work. The global star formation rate (SFR) and EW(H α ) for SN Ia hosts are slightly lower than those for CCSN hosts on average. SN Ia host galaxies are ∼0.3 dex more massive th...
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/169
      Issue No: Vol. 20, No. 11 (2020)
       
  • Solar image deconvolution by generative adversarial network
    • Authors: Long Xu; Wen-Qing Sun, Yi-Hua Yan Wei-Qiang Zhang
      First page: 170
      Abstract: With aperture synthesis (AS) technique, a number of small antennas can be assembled to form a large telescope whose spatial resolution is determined by the distance of two farthest antennas instead of the diameter of a single-dish antenna. In contrast from a direct imaging system, an AS telescope captures the Fourier coefficients of a spatial object, and then implement inverse Fourier transform to reconstruct the spatial image. Due to the limited number of antennas, the Fourier coefficients are extremely sparse in practice, resulting in a very blurry image. To remove/reduce blur, “CLEAN” deconvolution has been widely used in the literature. However, it was initially designed for a point source. For an extended source, like the Sun, its efficiency is unsatisfactory. In this study, a deep neural network, referring to Generative Adversarial Network (GAN), is proposed for solar image deconvolution. The experimental results demonstrate that the proposed model is markedly better than ...
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/170
      Issue No: Vol. 20, No. 11 (2020)
       
  • A new correction method for quasi-Keplerian orbits
    • Authors: Yue Chen; Da-Zhu Ma Fang Xia
      First page: 171
      Abstract: A pure two-body problem has seven integrals including the Kepler energy, the Laplace vector and the angular momentum vector. However, only five of them are independent. When the five independent integrals are preserved, the two other dependent integrals are naturally preserved from a theoretical viewpoint; but they may not necessarily be from a numerical computational viewpoint. Because of this, we use seven scale factors to adjust the integrated positions and velocities so that the adjusted solutions strictly satisfy the seven constraints. Noticing the existence of the two dependent integrals, we adopt the Newton iterative method combined with singular value decomposition to calculate these factors. This correction scheme can be applied to perturbed two-body and N -body problems in the solar system. In this case, the seven quantities associated with each planet slowly vary with time. More accurate values can be given to the seven slowly-varying quantities by integrating t...
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/171
      Issue No: Vol. 20, No. 11 (2020)
       
  • The correlations among variability, optical peak time and spectral time
           lag of long gamma-ray bursts
    • Authors: Bin Liao; Yuan-Chuan Zou, Fei-Fei Wang, Yu Liu Wei-Hua Lei
      First page: 172
      Abstract: Statistical relations are useful tools to comprehend the intrinsic physics processes of gamma-ray bursts (GRBs). In this work we collect spectral lag ( τ ), variability ( V ) and optical peak time ( t p,o ). We find that there is a correlation between variabilities and spectral lags, reading as V = −0.0075 (±0.0007) × log 10 τ + 0.0351 (±0.0024). There may also exist a relatively weak positive tendency between GRBs optical band peak times and their spectral time lags. Its Pearson coefficient is 0.398, which indicates a weak linear correlation. If we contain some “negative spectral lag” samples, then the latter relation would be worse due to two outlying points. The τ - V relation is consistent with previous studies, and the positive trend between τ and t p,o indicates the spectral lag of GRB might be caused by the curvature effect, but this conclusion is not significant.
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/172
      Issue No: Vol. 20, No. 11 (2020)
       
  • The effect of hydrodynamics alone on the subhalo population in a ΛCDM
           rich cluster sized dark matter halo
    • Authors: Jun-Yi Jia; Liang Gao Yan Qu
      First page: 174
      Abstract: We perform a set of non-radiative hydro-dynamical (NHD) simulations of a rich cluster sized dark matter halo from the Phoenix Project with three different numerical resolutions, to investigate the effect of hydrodynamics alone on the subhalo population in the halo. Compared to dark matter only (DMO) simulations of the same halo, subhaloes are less abundant for relatively massive subhaloes ( M sub> 2.5 × 10 9 h −1 M ⊙ , or V max> 70 km s −1 ) but more abundant for less massive subhaloes in the NHD simulations. This results in different shapes in the subhalo mass/ V max function in two different sets of simulations. At given subhalo mass, the subhaloes less massive than 10 10 h −1 M ⊙ have larger V max in the NHD than DMO simulations, while V max is similar for the subhaloes more massive ...
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/174
      Issue No: Vol. 20, No. 11 (2020)
       
  • Accretion flow properties of XTE J1118+480 during its 2005 outburst
    • Authors: Dipak Debnath; Debjit Chatterjee, Arghajit Jana, Sandip K. Chakrabarti Kaushik Chatterjee
      First page: 175
      Abstract: We study spectral and temporal properties of Galactic short orbital period transient black hole XTE J1118+480 during its 2005 outburst using archival data of RXTE PCA and HEXTE instruments in the combined energy range of 3 – 100 keV. Spectral analysis with the physical two component advective flow (TCAF) model allows us to understand the accretion flow properties of the source. We found that this outburst of XTE J1118+480 is an unconventional outburst as the source was only in the hard state (HS). Our spectral analysis suggests that during the entire outburst, the source was highly dominated by the low angular momentum sub-Keplerian halo rate. Since the source was active in radio throughout the outburst, we make an effort to estimate X-ray contribution of jets to total observed X-ray emissions from the spectral analysis with the TCAF model. The total X-ray intensity shows a similar nature of evolution as that of radio and jet X-ray fluxes. This allowed us to define this ‘outburs...
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/175
      Issue No: Vol. 20, No. 11 (2020)
       
  • The first results of observations of lunar occultations in different
           spectral ranges at the 6-m telescope of the SAO RAS
    • Authors: Ekaterina Shmaylova; Vladimir Dyachenko, Andrea Richichi, Anatoly Beskakotov, Aleksandr Maksimov, Arina Mitrofanova Yuri Balega
      First page: 176
      Abstract: Observations by the method of lunar occultations at the 6-m telescope of the SAO RAS reach a resolution limit better than 1 mas. We have devised a new method of observation, which allows obtaining the curves of lunar occultations simultaneously in different ranges of the visible part of the spectrum, and conducted the first observations using a modified optical system. In January 2019, applying the new method, the magnitude differences of the components of the binary star HD 36524 in the R and I bands were measured, which were 1.5 and 1.3 mag, respectively, in good agreement with values calculated from the Gaia mission. According to the obtained data, it was determined that with this method it is possible to reach a signal-to-noise ratio of about 5–10 for stars of 10th magnitude. We discuss the applicability of the proposed optical scheme for the study of binary stars.
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/176
      Issue No: Vol. 20, No. 11 (2020)
       
  • Carbon star CGCS 673 identified as a semi-regular variable star
    • Authors: Stephen M. Brincat; Charles Galdies Kevin Hills
      First page: 177
      Abstract: This study reports that the carbon star CGCS 673 is a semi-regular (SR) variable star with a period of 135 d and an amplitude of 0.18 mag in the V -band. The light curve obtained by this study correlates well with the SR classification as the photometric data obtained show noticeable periodicity in the light changes of CGCS 673 that is occasionally interrupted by a period of irregular variability. The derived period and colour index obtained from our data and those from professional databases indicate that the attributes of this star fall within the parameters of the SR class of variable stars. Following our notification of the discovery that this star is a variable source, CGCS 673 has received the AAVSO Unique Identifier of (AAVSO UID) 000-BMZ-492.
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/177
      Issue No: Vol. 20, No. 11 (2020)
       
  • Statistical properties of radio flux densities of solar flares
    • Authors: Lu Wang; Si-Ming Liu Zong-Jun Ning
      First page: 178
      Abstract: Short timescale flux variations are closely related to the energy release process of magnetic reconnection during solar flares. Radio light curves at 1, 2, 3.75, 9.4, and 17 GHz of 209 flares observed by the Nobeyama Radio Polarimeter from 2000 to 2010 are analyzed with a running smooth technique. We find that the impulsive component (with a variation timescale shorter than 1 s) of 1 GHz emission of most flares peaks at a few tens of solar flux unit and lasts for about 1 minute and the impulsive component of 2 GHz emission lasts a shorter period and peaks at a lower flux level, while at the three high frequency channels the occurrence frequency of flares increases with the decrease of the flux density up to the noise level of the corresponding background. However, the gradual components of these emissions have similar duration and peak flux density distributions. We also derive the power spectrum on different timescales and a normalized wavelet analysis is used to confirm featur...
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/178
      Issue No: Vol. 20, No. 11 (2020)
       
  • The first photometric investigation of the contact binary OQ Cam
    • Authors: Ya-Ni Guo; Kai Li, Qi-Qi Xia, Xing Gao, Lin-Qiao Jiang Yuan Liu
      First page: 179
      Abstract: The first charge-coupled device photometric light curves in B , V , R c , and I c bands of the short-period contact binary star OQ Cam are presented. Through analyzing the light curves with the Wilson-Devinney code, it is found that OQ Cam is a W-type shallow contact binary star with a contact degree of f = 20.2%. Based on the O – C analyzing, the orbit period displays a long term increasing with a rate of dP / dt = 4.40 × 10 −7 d yr −1 . The increasing in orbit period can be interpreted by mass transfer from the less massive component to the more massive one. As the orbit period increases, OQ Cam would evolve from the present shallow contact configuration to a non-contact stage. So it may be a potential candidate to confirm the thermal relaxation oscillation theory.
      Citation: Research in Astronomy and Astrophysics
      PubDate: 2020-11-25T00:00:00Z
      DOI: 10.1088/1674-4527/20/11/179
      Issue No: Vol. 20, No. 11 (2020)
       
 
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