Search Publications

Observability of gamma-ray pulsars.

Massaro, E.; Buccheri, R.; Scarsi, L. +1 more

Attention is given to the Crab (PSR 0531 plus 21) and Vela (PSR 0833 minus 45) pulsars in a study of pulsed energy release in the gamma-ray channel; with a gamma-ray/radio luminosity ratio on the order of one million. SAS 2 and COS B data are analyzed in an attempt to detect possible gamma-ray emission from other known radio pulsars. A phenomenolo…

IUE observations of solar system objects

Gull, T. R.; Moos, H. W.; Wilson, R. +16 more

During the scientific commissioning phase of IUE several spectra were acquired from objects residing in the Solar System. The activities focused on testing numerous parameters which would indicate the usefulness of IUE for planetary science. It seems that IUE can successfully tackle many important questions and the data analysis and interpretation…

Coincidence of compact supernova remnants with three COS-B γ-ray sources

Lamb, R. C.

POSITIONAL coincidences and a `near miss' of four small-diameter supernova remnants (SNR) with three of the 11 unidentified COS-B γ-ray sources¹ are reported here. I argue that it is unlikely that all four SNR-γ-ray source associations are accidental, and that their compactness probably indicates that their ages are not greater than abo…

IUE observations of Large Magellanic Cloud members and detection of the 2,200 Å feature

Nandy, K.; Morgan, D. H.

THE dominant feature in the UV spectra of reddened stars in our Galaxy is the broad absorption feature of interstellar origin, centred near 2,200 Å and having a halfwidth of 350 Å (ref. 1). The wavelength position of this feature and the correlation of its strength with other interstellar extinction parameters, for example, the visual colour exces…

On the identification of celestial γ-ray sources

Massaro, E.; Scarsi, L.

THE observations from COS B have provided a new and more detailed picture of the high energy γ-ray emission from the Galaxy. We discuss here the first catalogue with 13 localised sources which has been compiled^1,2 and how the list should lengthen in the near future, as the data analysis progresses.

IUE observations of the eclipsing binary Epsilon Aurigae

Hack, M.; Selvelli, P. L.

THE eclipsing binary Epsilon Aur is almost peculiar binary system and it has not been explained satisfactorily. We report here our observations of this system using the International Ultraviolet Explorer (IUE) collected at the Villafranca Satellite Tracking Station of the European Space Agency (SA).

The International Ultraviolet Explorer (IUE)

Wilson, R.

International Ultraviolet Explorer to be launched this week

Sharrock, Stuart