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                 WORKSHOP ON THE ASTROPHYSICS OF 
                      RELATIVISTIC SOURCES


               Elba Island (Italy), June 2-5, 1999


The Arcetri Astrophysical Observatory (Florence) is devoting the 1999 
Elba Workshop to the subjet "Astrophysics of Relativistic Sources".

In a wide variety of astrophysical circumstances, both at galactic and 
extragalactic scales, relativistic flows occur which manifest themselves 
in jets, superluminal motions, extremely high brightness temperatures 
in the radio band, flares and gamma ray bursts, pulsar winds  etc.  
These flows originate in compact objects - black holes and neutron stars 
in particular - and appear to be usually mediated by magnetic fields. 

It is the aim of the workshop to analyse, both from a theoretical and an 
observational points of view, the commonalities and differences of 
these phenomena and the physical processes involved 
(magnetohydrodynamics, shocks, particle acceleration, radiation 
transfer....).

The Workshop will take place in the Conference Center of Marciana 
Marina, Elba Island (Tuscany) between June 2 and June 5, 1999.  The 
slight travel inconvenience of holding the workshop on the Island will 
be compensated by the beauty of the place and mitigated by the plan to 
organize a bus-boat transportation from Pisa Airport to Marciana, both 
on the arrival and on the departing dates.  The maximum number of 
participants will be limited at around 70.
 
For each main issue it is intended to invite one key speaker and leave 
ample room for contributions which fall within the scope of the 
workshop.  Ample time will be reserved for formal and informal 
discussions among participants.

The Scientific Organizing Committee is composed of:  F. Pacini 
(Arcetri), M. Salvati (Arcetri), M. Vietri (Rome), S. Wagner 
(Heidelberg), L. Woltjer (Arcetri and Haute Provence).

The local organizers are:  R. Bandiera, E. Masini and M. Salvati.  

     Those interested in taking part should send an e-mail to:  
                      elba99@arcetri.astro.it   

They will receive by e-mail further information about the program and 
practical matters.  The next circular will be mailed in late February or 
early March 1999.

                 PLEASE  POST  IN  YOUR  INSTITUTE.
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