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Chromospheric Running Wave from a Solar Cyclone Produced through the Emergence of a Twisted Magnetic Flux Tube

Magara, Tetsuya; Inoue, Satoshi; Lee, Hwanhee +3 more

An innovative solar observing satellite, Hinode, has successfully observed the detailed evolution of an emerging magnetic field, starting from its appearance at the solar surface, to forming a developed bipolar region. The high spatial and temporal resolutions provided by the satellite has enabled us to capture prominent dynamic phenomena caused b…

Radio-AGN in the AKARI-NEP Field and Their Role in the Evolution of Galaxies

Im, M.; Karouzos, M.; AKARI-NEP Team

Radio-loud active galaxies have been found to exhibit a close connection to galactic mergers and host galaxy star-formation quenching. We present preliminary results of an optical spectroscopic investigation of the AKARI NEP field. We focus on the population of radio-loud AGN and use photometric and spectroscopic information to study both their st…

Detección de la estrella simbiótica Hen 2-87 en rayos X con XMM-Newton

Luna, G. J. M.; Nuñnez, N. E.

Symbiotic stars are interacting binary systems, where accretion, most of the times, occurs onto a white dwarf. Until recently only a couple of dozens of symbiotics were known to be X-ray emitters, with most of the emission having energies of less than about 2.00 keV. In the last decade, with the launch of modern X-ray satellites such as XMM-Newton…

Cumulative-Phase-Alteration of Galactic-Light Passing Through the Cosmic-Microwave-Background: A New Mechanism for Some Observed Spectral-Shifts

Tank, Hasmukh K.

Currently, whole of the measured "cosmological-red-shift" is interpreted as due to the "metric-expansion-of-space"; so for the required "closer-density" of the universe, we need twenty times more mass-energy than the visible baryonic-matter contained in the universe. This paper proposes a new mechanism, which can account for good percentage of the…

Rapid Disappearance of Penumbra-Like Features near a Flaring Polarity Inversion Line: The Hinode Observations

Gosain, Sanjay; Ravindra, B.

We present the observations of penumbra like features (PLFs) near a polarity inversion line (PIL) of flaring region. The PIL is located at the moat boundary of active region (NOAA 10960). The PLFs appear similar to sunspot penumbrae in morphology but occupy small area, about 6$\times10^{7}$ km$^{2}$, and are not associated with sunspot or pore. We…

The role of filament activation in a solar eruption

Fletcher, L.; Romano, P.; Labrosse, N. +2 more

Context. Observations show that the mutual relationship between filament eruptions and solar flares cannot be described in terms of an unique scenario. In some cases, the eruption of a filament appears to trigger a flare, while in others the observations are more consistent with magnetic reconnection that produces both the flare observational sign…

Observations of quasi-perpendicular propagating electromagnetic waves near the ionopause current sheet of Venus

Luhmann, J. G.; Russell, C. T.; Wei, H. Y. +3 more

Due to the lack of an intrinsic magnetic field at Venus, the Venus ionosphere acts as the obstacle to the incoming solar wind flow. Induced currents flowing on the ionopause resist the penetration of the solar wind magnetic fields into the ionosphere. The Venus Express magnetometer occasionally observes plasma waves near the ionopause. These waves…

Using the XMM-Newton Optical Monitor to Study Cluster Galaxy Evolution

Kuntz, K. D.; Hammer, Derek; Miller, Neal A. +2 more

We explore the application of XMM-Newton Optical Monitor (XMM-OM) ultraviolet (UV) data to study galaxy evolution. Our sample is constructed as the intersection of all Abell clusters with z < 0.05 and having archival XMM-OM data in either the UVM2 or UVW1 filters, plus optical and UV photometry from the Sloan Digital Sky Survey and GALEX, respe…

AVES: A high performance computer cluster array for the INTEGRAL satellite scientific data analysis

Ubertini, Pietro; Federici, Memmo; Martino, Bruno Luigi

In this paper we describe a new computing system array, designed, built and now used at the Space Astrophysics and Planetary Institute (IAPS) in Rome, Italy, for the INTEGRAL Space Observatory scientific data analysis. This new system has become necessary in order to reduce the processing time of the INTEGRAL data accumulated during the more than …

AKARI IRC Survey of the Large Magellanic Cloud: AN Overview of the Survey and a Brief Description of the Point Source Catalog

Onaka, Takashi; Ita, Yoshifusa; Kato, Daisuke +1 more