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Multi-Spacecraft Turbulence Analysis Methods

Osman, Kareem T.; Horbury, Tim S.

Turbulence is ubiquitous in space plasmas, from the solar wind to supernova remnants, and on scales from the electron gyroradius to interstellar separations. Turbulence is responsible for transporting energy across space and between scales and plays a key role in plasma heating, particle acceleration and thermalisation downstream of shocks. Just a…

Rebuttal to “Comment on the paper “Comparison of the composition of the Tempel 1 ejecta to the dust in Comet C/Hale Bopp 1995 O1 and YSO HD 100546” by C.M. Lisse, K.E. Kraemer, J.A. Nuth III, A. Li, and D. Joswiak"

Lisse, C. M.

This response is to address the comments made by Drs. J. Crovisier and D. Bockelee-Morvan concerning the spectral analysis of Lisse et al. [Lisse, C.M., Kraemer, K.E., Nuth, J.A., Li, A., Joswiak, D., 2007. Icarus 187, 69-86] of the mid-IR ISO SWS spectrum of Comet Hale-Bopp 1995 O1 taken on October 6, 1996, and to support the conclusions made in …

ISINA: INTEGRAL Source Identification Network Algorithm

Hill, A. B.; Bird, A. J.; Scaringi, S. +4 more

We give an overview of ISINA: INTEGRAL Source Identification Network Algorithm. This machine learning algorithm, using random forests, is applied to the IBIS/ISGRI data set in order to ease the production of unbiased future soft gamma-ray source catalogues. First, we introduce the data set and the problems encountered when dealing with images obta…

Erratum: Kinematics of gas and stars in the circumnuclear star-forming ring of NGC3351

Terlevich, Roberto; Terlevich, Elena; Díaz, Ángeles I. +2 more

INTEGRAL high energy sky: The keV to MeV cosmic sources

Ubertini, Pietro; Bazzano, Angela; Bassani, Loredana +2 more

After almost 5 years of operation, ESA's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) Space Observatory has unveiled a new soft gamma-ray sky and produced a remarkable harvest of results, ranging from identification of new high energy sources, to the discovery of dozens of variable sources to the mapping of the aluminum emission from…

Peculiarities of galactic rotation in the solar neighborhood from the data on red clump giants

Rybka, S. P.

The three-dimensional Ogorodnikov-Milne model was used to investigate the local velocity field on the basis of the tangential velocities of more than 53 000 red giants which were identified as most probable Red Clump members from the Tycho-2 catalog. Galactic rotation parameters were determined for two star groups at the galactic latitudes |b| <…

Solar prominence properties derived from the UV-EUV SUMER spectral atlas

Vial, J. -C.; Parenti, S.; Lemaire, P.

In this paper, we summarize the work done to build a UV-EUV spectral atlas of a prominence and we introduce some recent scientific results obtained from these data. For this work we used SOHO/SUMER data covering the full wavelength range accessible by the instrument (from about 800 to 1600 Å), when a prominence and the quiet Sun (used as spectral …

Planetary transits from CoRoT—Europe and exoplanets

Fridlund, C. V. M.

CoRoT (COnvection, ROtation and planetary Transit) was launched successfully into a near-perfect orbit on 27 December 2006 and went through its verification phase until 2 April 2007 without incident. Indeed, this process went so well that scientific operations could commence on 2 February 2007. Under the management of the French space agency CNES …

NGC 2419: an ``intergalactic wanderer'' or a simple Galactic globular cluster? .

Di Criscienzo, M.; Clementini, G.; Ripepi, V. +8 more

We have carried out a new photometric study of the remote Galactic globular cluster NGC 2419, using proprietary and archive B,V,I time-series CCD photometry of the cluster, that allowed us to discover a large number of new variable stars and to obtain a new colour magnitude diagram that reaches V∼ 26 mag over a field of 50x43 square arcmin centere…

Analysis of low frequency whistler wave occurrences in the night-side Venus ionosphere

White, Harold Glenn

This body of work deals with a detailed analysis of plasma, magnetic, and electric field data from Pioneer Venus Orbiter (PVO) to determine if the data are consistent with the possibility of lightning on Venus. This has been a strong topic of debate in the planetary physics community. In a recent Nature article [Ingersoll, 2007], Ingersoll provide…