Different nuclear burning regimes are predicted on accreting neutron stars (NSs) depending mainly -but not only- on the amount of mass accreted on the NS per unit time and area. We present X-ray observations of a rapidly accreting 11 Hz pulsar in the globular cluster Terzan 5 that reveal four distinct thermonuclear bursting regimes. In one of them

HerMES, the Herschel/SPIRE extragalactic GTO program, is detecting high redshift sources which were once the domain of high redshift QSOs. Our most spectacular object discovered to date, from over 50 square degrees of survey area with rich ancillary data, is an extraordinarily bright submillimeter galaxy with a confirmed redshift of z=6.337, which

A logarithmic spiral is a prominent feature appearing in a majority of observed galaxies. This feature has long been associated with the traditional Hubble classification scheme, but historical quotes of pitch angle of spiral galaxies have been almost exclusively qualitative. We have developed a methodology, utilizing Two-Dimensional Fast Fourier

We report on magnetic field emergences covering significant areas of exploding granules. The balloon-borne mission Sunrise provided high spatial and temporal resolution images of the solar photosphere. Continuum images, longitudinal and transverse magnetic field maps and Dopplergrams obtained by IMaX onboard Sunrise are analyzed by local

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High-precision HST photometry has revealed that the globular cluster (GC) NGC 2808 hosts a triple main sequence (MS) corresponding to three stellar populations with different helium abundances. We carried out photometry on ACS/WFC HST images of NGC 2808 with the main purpose of measuring the luminosity function (LF) of stars in the three different