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BeppoSAX U.S. Coordination Facility

March 1999 from the BeppoSAX Calendar

Sun Mon Tue Wed Thu Fri Sat
     1   2   3   4   5   6
 7   8   9  10  11  12  13
14  15  16  17  18  19  20
21  22  23  24  25  26  27
28  29  30  31

4U1626-67 broad band spectrum (left).Spectra of 8 X-ray pulsars (right).

The BeppoSAX observation of eight binary pulsars led to the detection of cyclotron lines in six of them. In three cases (the 4.8 sec high-mass X-ray pulsar Cen X-3; the 7.7 sec low-mass X-ray binary pulsar 4U1626-67; and the 700 sec high-mass X-ray pulsar GX301-2) such features were never observed before. The broad-band spectrum of 4U1626-67 is shown on the left side. The figure on the right shows the spectra of the eight pulsars divided by the spectrum of the Crab Nebula, a technique that is used to visualize spectral features such as cycrotron lines. Courtesy of M. Orlandini and D. Dal Fiume, TeSRE Institute, CNR, Bologna, Italy.

1999 BeppoSAX Calendar

Images courtesy of the Agenzia Spaziale Italiana (ASI) and the BeppoSAX Science Data Center (SDC).

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This file was last modified on Tuesday, 31-Jul-2001 14:08:36 EDT