Search Publications

The Internet as a Virtual Observatory: New Elements for Ten Long Period Variables in Aquila

Mattei, J. A.; Bedient, J.; Richwine, P. +1 more

Data freely available on the Internet-CCD images from Stardial, data from the Northern Sky Variability Survey (NSVS), the Automated All-Sky Survey (ASAS), the Hipparcos Epoch Photometry Annex, and visual observations from the American Association of Variable Star Observers (AAVSO)-are combined to characterize the behavior of 10 long period variabl…

Cluster at the Bow Shock: Status and Outlook

Balogh, A.; Thomsen, M. F.; Lembège, B. +11 more

INTEGRAL reveals a new class of obscured high mass X-ray binaries: focus on IGR J16318-4848

Chaty, Sylvain; Filliatre, Philippe

The X-ray source IGR J16318-4848 is the first source discovered by INTEGRAL on 2003, January 29, exhibiting a very high column density. On 2003, February, 23-25 we triggered a Target of Opportunity (ToO) program using the EMMI (optical) and SOFI (near-infrared, NIR) instruments on the New Technology Telescope of the European Southern Observatory (…

Continuous lobe reconnection in the mid-tail and its relationship to substorms: Cluster observations of continuous lobe reconnection in the mid-magneto tail

Cao, J. B.; Reme, H.; Korth, A. +9 more

When the IMF turns southward, a great amount of magnetic energy is stored in the magnetotail, and the electric field across the magnetotail substantially enhances. As long as magnetic reconnection (MR) in the magnetotail initiates and continues, the magnetic field and plasma in the central plasma sheet are carried away to the near-Earth and down t…

Periodicity Search in the X-ray Data of RX J0007.0+7302

Lin, Lupin C. -C.; Chang, Hsiang-Kuang

Some unidentified EGRET sources have been reported to have probable X-ray counterparts. Periodicities in the X-ray data of those sources, if found, may help to strengthen the identification and to reveal their nature. We performed a detailed search of periodicities with a photon-counting method, the H-test, in the XMM and ASCA data of RX J0007.0+7…

pp ii High-order shock-capturing methods for modeling dynamics of the solar atmosphere

Bryson, Steve; Kosovichev, Alexander; Levy, Doron

We use one-dimensional high-order central shock-capturing numerical methods to study the response of various model solar atmospheres to forcing at the solar surface. The dynamics of the atmosphere is modeled with the Euler equations in a variable-sized flux tube in the presence of gravity. We study dynamics of the atmosphere suggestive of spicule …

A MERLIN Observation of PSR B1951+32 and Its Associated Plerion

Muxlow, T. W. B.; Golden, A.; Shearer, A. +4 more

In an investigative 16 hr L-band observation using the MERLIN radio interferometric array, we have resolved both the pulsar PSR B1951+32 and the structure within the flat spectral radio continuum region, believed to be the synchrotron nebula associated with the interaction of the pulsar and its ``host'' supernova remnant CTB 80. The extended struc…

Early BVRcIc imaging and the discovery of the optical afterglow of GRB 041218

Fukazawa, Y.; Tsunemi, H.; Torii, K.

We report early BVR_cI_c imaging of the INTEGRAL GRB 041218. The observation started 129 s after the burst and a sequence of exposures in V, R_c, I_c, and B bands were repeated. The optical afterglow is detected in R_c and I_c bands while it was not detected in B and V. We find that the early afterglow deviates from a…

Temperature variations in Titan's upper atmosphere: Impact on Cassini/Huygens

Lammer, H.; Rucker, H. O.; Fischer, G. +5 more

Temperature variations of Titan's upper atmosphere due to the plasma interaction of the satellite with Saturn's magnetosphere and Titan's high altitude monomer haze particles can imply an offset of up to ±30K from currently estimated model profiles. We incorporated these temperature uncertainties as an offset into the recently published Vervack et…

Thermal structure of the Martian atmosphere retrieved from the IR spectrometry in the 15 µm CO₂ band: input to MIRA

Grassi, D.; Zasova, L. V.; Formisano, V. +2 more

This paper describes one of the sources of the data concerning the thermal structure of the Martian atmosphere, based on the thermal IR spectrometry method. It allows to investigate the Martian atmosphere below 55 km by retrieving the temperature profiles from the 15 µm CO₂ band. This approach enables to reach the vertical resolut…