Search Publications
On the X-Ray Spectra of Anomalous X-Ray Pulsars and Soft Gamma Repeaters
Kaspi, V. M.; Boydstun, K.
We revisit the apparent correlation between soft X-ray band photon index and spin-down rate \dot{ν} previously reported for Anomalous X-ray Pulsars (AXPs) and Soft Gamma Repeaters (SGRs) by Marsden & White. Our analysis, improved thanks to new source discoveries, better spectral parameter measurements in previously known sources, and the requi…
Indications of brine related local seepage phenomena on the northern hemisphere of Mars
Möhlmann, D.; Kereszturi, A.; Berczi, Sz. +5 more
Springtime low albedo features, called Dark Dune Spots, on the seasonal frost covered dunes on Mars between 77°N and 84°N latitude have been analyzed. Two groups of these spots have been identified: "small" and "large" ones, where large spots have diameters above 4 m, and complex internal structure. From these "large" spots branching seepage-like …
Cosmic-ray-mediated Formation of Benzene on the Surface of Saturn's Moon Titan
Liang, Mao-Chang; Yung, Yuk L.; Kaiser, Ralf I. +4 more
The aromatic benzene molecule (C6H6)—a central building block of polycyclic aromatic hydrocarbon molecules—is of crucial importance for the understanding of the organic chemistry of Saturn's largest moon, Titan. Here, we show via laboratory experiments and electronic structure calculations that the benzene molecule can be for…
Emergence of Helical Flux and the Formation of an Active Region Filament Channel
Kubo, M.; Lites, B. W.; Title, A. +6 more
We present comprehensive observations of the formation and evolution of a filament channel within NOAA Active Region (AR) 10978 from Hinode/Solar Optical Telescope and TRACE. We employ sequences of Hinode spectro-polarimeter maps of the AR, accompanying Hinode Narrowband Filter Instrument magnetograms in the Na I D1 line, Hinode Broadband Filter I…
A new analysis of the short-duration, hard-spectrum GRB 051103, a possible extragalactic soft gamma repeater giant flare
Cline, T.; Hurley, K.; Yamaoka, K. +34 more
GRB 051103 is considered to be a candidate soft gamma repeater (SGR) extragalactic giant magnetar flare by virtue of its proximity on the sky to M81/M82, as well as its time history, localization and energy spectrum. We have derived a refined interplanetary network localization for this burst which reduces the size of the error box by over a facto…
Internal Fine Structure of Ellerman Bombs
Matsumoto, Takuma; Shibata, Kazunari; Ichimoto, Kiyoshi +12 more
We conducted coordinated observations of Ellerman bombs (EBs) between Hinode Satellite and Hida Observatory (HOP12). CaII H broad-band filter images of NOAA 10966 on 2007 August 9 and 10 were obtained with the Solar Optical Telescope (SOT) aboard the Hinode Satellite, and many bright points were observed. We identified a total of 4 bright points a…
Current Systems in Planetary Magnetospheres and Ionospheres
Glassmeier, Karl-Heinz; Fedorov, Andrei; Baumjohann, Wolfgang +1 more
The interaction of planets with the solar wind produces a diversity of current systems, yet these can be classified into only a few different types, which include ionospheric currents, currents carried by magnetospheric boundaries like the magnetopause or ionopause, magnetotail currents, and currents flowing inside the magnetospheres, like ring cu…
The end of the white dwarf cooling sequence in M 67
Salaris, M.; Kochanek, C. S.; Yadav, R. K. S. +21 more
In this paper, we present for the first time a proper-motion-selected white dwarf (WD) sample of the old Galactic open cluster M 67, down to the bottom of the WD cooling sequence (CS). The color-magnitude diagram is based on data collected with the LBC-Blue camera at the prime-focus of LBT. As first epoch data, we used CFHT-archive images collecte…
Observations of Chromospheric Anemone Jets with Hinode Ca II Broadband Filtergraph and Hida Ca II Spectroheliograph
Shibata, Kazunari; Ichimoto, Kiyoshi; Kitai, Reizaburo +3 more
We present the first simultaneous observations of chromospheric "anemone" jets in solar active regions with Hinode SOT Ca II H broadband filetergram and Ca II K spetroheliogram on the Domeless Solar Telescope (DST) at Hida Observatory. During the coordinated observation, 9 chromospheric anemone jets were simultaneously observed with the two instru…
Signature of slow acoustic oscillations in a non-flaring loop observed by EIS/Hinode
Srivastava, A. K.; Dwivedi, B. N.
We study intensity oscillations near the apex of a coronal loop to find the signature of MHD oscillations. We analyse the time series of the strongest Fe XII 195.12 Å image data, observed by 40″ SLOT of the EUV Imaging Spectrometer (EIS) onboard the Hinode spacecraft. Using a standard wavelet tool, we produce power spectra of intensity oscillation…