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In-orbit Performance of UVIT and First Results
Stalin, C. S.; Rao, N. Kameswara; Sutaria, F. +23 more
The performance of the ultraviolet telescope (UVIT) on-board AstroSat is reported. The performance in orbit is also compared with estimates made from the calibrations done on the ground. The sensitivity is found to be within
The Radio and X-ray Mode-Switching Pulsar PSR B0943+10
Mereghetti, Sandro; Rigoselli, Michela
Observations obtained in the last years challenged the widespread notion that rotation-powered neutron stars are steady X-ray emitters. Besides a few allegedly rotation-powered neutron stars that showed 'magnetar-like' variability, a particularly interesting case is that of PSR B0943+10. Recent observations have shown that this pulsar, well studie…
Evidence of Magnetoacoustic Oscillations above the Brightened and Magnetically Active Quiet-Sun
Srivastava, A. K.; Dwivedi, B. N.
We study the near photospheric Fe I 6302 Å (V-component) and chromospheric Ca II H 3968 Å radiance oscillations in the lower solar atmosphere above the four brightened and magnetically active regions of the quiet-Sun as observed by the solar optical telescope onboard Hinode. At the chosen locations (L1, L3, L4), we obtain the statistically signifi…