Search Publications
Internal Structure of Molecular Gas in a Main-sequence Galaxy With a UV Clump at z = 1.45
Hatsukade, Bunyo; Ohta, Kouji; Yabe, Kiyoto +2 more
We present results of subarcsec Atacama Large Millimeter/submillimeter Array observations of CO(2-1) and CO(5-4) toward a massive main-sequence galaxy at z = 1.45 in the Subaru-XMM/Newton Deep Survey/UDS field, aiming at examining the internal distribution and properties of molecular gas in the galaxy. Our target galaxy consists of the bulge and d…
On the Persistent Poloidal Alfven Waves
Choi, Jiwon; Lee, Dong-Hun
Standing poloidal Alfven waves, radial oscillations with ultralow frequency of 5-20 mHz, are excited by wave-particle interaction in the magnetosphere. It has been a question over several decades why poloidal oscillations often persist and are not quickly converted into toroidal waves even when there is no corresponding particle source. By adoptin…
Searching for Gamma-Ray Binaries in Multiwavelength Catalogs
Luque-Escamilla, Pedro L.; Martí, Josep
The number of gamma-ray binaries currently known is still so small that even a new finding represents a significant expansion of its population. We present a possible hunting strategy based on screening different catalogs to filter potential peculiar stars consistent with gamma-ray sources whose association at lower energies is not yet certain. So…
Re-Analysis of the Cassini RPWS/LP Data in Titan's Ionosphere: 2. Statistics on 57 Flybys
Wahlund, J. -E.; Edberg, N. J. T.; Hadid, L. Z. +5 more
The ionosphere of Titan hosts a complex ion chemistry leading to the formation of organic dust below 1,200 km. Current models cannot fully explain the observed electron temperature in this dusty environment. To achieve new insight, we have re-analyzed the data taken in the ionosphere of Titan by the Cassini Langmuir probe (LP), part of the Radio a…
Detailed studies of IPHAS sources - II. Sab 19, a true planetary nebula and its mimic crossing the Perseus Arm
Guerrero, M. A.; Ramos-Larios, G.; Sabin, L. +2 more
The INT Photometric Hα Survey (IPHAS) has provided us with a number of new emission-line sources, among which planetary nebulae (PNe) constitute an important fraction. Here we present a detailed analysis of the IPHAS nebula Sab 19 (IPHASX J055242.8+262116) based on radio, infrared, and optical images and intermediate- and high-dispersion long-slit…
Unusual enhancement of 30 MeV proton flux in an ICME sheath region
Yashiro, Seiji; Nitta, Nariaki V.; Oka, Mitsuo +3 more
In gradual Solar Energetic Particle (SEP) events, shock waves driven by coronal mass ejections (CMEs) play a major role in accelerating particles, and the energetic particle flux enhances substantially when the shock front passes by the observer. Such enhancements are historically referred to as Energetic Storm Particle (ESP) events, but it remain…
Physical and orbital properties of the stellar system HIP 43766
Widyan, Hatem; Aljboor, Hussam
In this paper, we present the analysis of the stellar binary system HIP 43766 to determine its properties. We rely on dynamical modeling and atmospheric modeling with recent data to determine the orbital solution and the physical properties of the system. There is a consistency between observed and synthetic photometry obtained using atmospheric m…
VLT/MUSE and ATCA Observations of the Host Galaxy of the Short GRB 080905A at z = 0.122
Hunt, L. K.; Hartmann, D. H.; Klose, S. +4 more
Short-GRB progenitors could come in various flavors, depending on the nature of the merging compact stellar objects (including a stellar-mass black hole or not) or depending on their ages (millions or billions of years). At a redshift of z = 0.122, the nearly face-on spiral host of the short GRB 080905A is one of the closest short-GRB host galaxie…
The low electrical conductivity of Titan's lower atmosphere
Lorenz, Ralph D.
Titan's near-surface atmosphere, with a relatively high density and with weak ion production by cosmic rays or other sources, likely has a lower electrical conductivity than the Earth's, possibly <1 fS/m. Direct measurements by the Relaxation Probe on Huygens constrain it to be <0.5 pS/m, and extrapolation from higher altitudes suggests orde…
Hot Plasma in the Magnetotail Lobes Shows Characteristics Consistent With Closed Field Lines Trapped in the Lobes
Coxon, John C.; Fear, Robert C.; Reidy, Jade A. +2 more
We examine the magnetotail using data from the Hot Ion Analyzer on Cluster 1 during 2001-2009. We develop and utilize an algorithm in order to identify times during which Cluster 1 is in the magnetotail lobe but observes plasma, which is hotter than our expectations of the lobe. We analyze the prevailing Interplanetary Magnetic Field (IMF) BZ…