9.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Korea University of Science and TechnologyKR752 papers
- National Astronomical Observatory of JapanJP641 papers
- Seoul National UniversityKR545 papers
- Centre National de la Recherche ScientifiqueFR520 papers
- Center for Astrophysics Harvard & SmithsonianUS483 papers
- California Institute of TechnologyUS440 papers
- Chinese Academy of SciencesCN423 papers
- The University of TokyoJP392 papers
- Kyung Hee UniversityKR362 papers
- Max Planck Institute for AstronomyDE337 papers
- National Astronomical ObservatoriesCN304 papers
- The Ohio State UniversityUS303 papers
13 papers · 1 filter
Classical evolution and quantum generation in generalized gravity theories including string corrections and tachyon: Unified analyses
J. Hwang, H. Noh
We present cosmological perturbation theory based on generalized gravity theories including string theory correction terms and a tachyonic complication. The classical evolution as…
A Search for Stellar Populations in High Velocity Clouds
M. H. Siegel, S. R. Majewski, C. Gallart +3
We report the results of a photometric search for giant stars associated with the cores of four high velocity clouds (HVCs) -- two of which are compact HVCs -- using the Las Campan…
Construction of the Korean VLBI Network (KVN)
H. -G. Kim, S. -T. Han, B. W. Sohn +4
Korea's new VLBI project to construct the Korean VLBI Network (KVN) started in 2001, as a 7-year project that is fully funded by our government. We plan to build 3 new high-precisi…
Third order perturbations of a zero-pressure cosmological medium: Pure general relativistic nonlinear effects
J. Hwang, H. Noh
We consider a general relativistic zero-pressure irrotational cosmological medium perturbed to the third order. We assume a flat Friedmann background but include the cosmological c…
Second order perturbations of a zero-pressure cosmological medium: Proofs of the relativistic-Newtonian correspondence
J. Hwang, H. Noh
The dynamic world model and its linear perturbations were first studied in Einstein's gravity. In the system without pressure the relativistic equations coincide exactly with the l…
Relativistic-Newtonian correspondence of the zero-pressure but weakly nonlinear cosmology
H. Noh, J. Hwang
It is well known that couplings occur among the scalar-, vector-, and tensor-type perturbations of Friedmann world model in the second perturbational order. Here, we prove that, ex…
High Resolution Observations of the Near-Infrared Emission from NGC 6822 Hubble V
Sungho Lee, Soojong Pak, Sang-Gak Lee +4
We observed Hubble V, the brightest HII region complex in the dwarf irregular galaxy NGC 6822, at near-infrared (1.8--2.4 um) wavelengths using the Cooled Grating Spectrometer 4 (C…
Brans-Dicke Theory as a Unified Model for Dark Matter - Dark Energy
Hongsu Kim
The Brans-Dicke (BD) theory of gravity is taken as a possible theory of k-essence coupled to gravity. It then has been realized that the BD scalar field does indeed play a role of…
A "Starless" Core that Isn't: Detection of a Source in the L1014 Dense Core with the Spitzer Space Telescope
C. H. Young, J. K. Joergensen, Y. L. Shirley +27
We present observations of L1014, a dense core in the Cygnus region previously thought to be starless, but data from the Spitzer Space Telescope shows the presence of an embedded s…
SX Phoenicis Stars in the Globular Cluster NGC 5466
Young-Beom Jeon, Myung Gyoon Lee, Seung-Lee Kim +1
Through time-series CCD photometry of the globular cluster NGC 5466, we have detected nine SX Phoenicis stars including three new ones. All the SX Phoenicis stars are located in th…
The Lifetimes of Molecular Cloud Cores: What is the Role of the Magnetic Field?
E. Vazquez-Semadeni, J. Kim, M. Shadmehri +1
We discuss the lifetimes and evolution of dense cores formed as turbulent density fluctuations in magnetized, isothermal molecular clouds. We consider numerical simulations in whic…
Gravitational Wave Spectrum in Inflation with Nonclassical States
Seoktae Koh, Sang Pyo Kim, Doo Jong Song
The initial quantum state during inflation may evolve to a highly squeezed quantum state due to the amplification of the time-dependent parameter, , which may be the…
Bonnor-type Black Dihole Solution in Brans-Dicke-Maxwell Theory
Hongsu Kim, Hyung Mok Lee
It was originally thought that Bonnor's solution in Einstein-Maxwell theory describes a singular point-like magnetic dipole. Lately, however, it has been demonstrated that indeed i…