Mechanics and Biomechanics Studies

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• HAYRİ ERTAN

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• FEZA KORKUSUZ

A major question in the study of black hole binaries involves our understanding of the accretion geometry when the sources are in the ``hard'' state, with an X-ray energy spectrum dominated by a hard power-law component and radio emission coming from a steady ``compact'' jet. Although the common hard state picture is…

• EMRAH KALEMCİ

OBJECTIVE: The agonist-antagonist strength relationship for shoulder external rotation and internal rotation was formerly described by the relatively more functional ratios of eccentric external rotator to concentric internal rotator moments, and eccentric internal rotator to concentric external rotator moments for th…

• TUNÇ ALP KALYON

Neutron stars and black holes often reside in binaries where the accretion rate onto the compact object varies by orders of magnitude. These "X-ray transients" are observed both in outburst (when the high accretion rate makes them X-ray bright) and quiescence (when the accretion rate is very low, or potentially zero).…

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Most black hole binaries show large changes in X-ray luminosity caused primarily by variations in mass accretion rate. An important question for understanding black hole accretion and jet production is whether the inner edge of the accretion disk recedes at low accretion rate. Measurements of the location of the inner…

We present new results from a multiwavelength (radio/infrared/optical/X-ray) study of the black hole X-ray binary GRO J1655-40 during its 2005 outburst. We detected, for the first time, mid-infrared emission at 24 μm from the compact jet of a black hole X-ray binary during its hard state, when the source shows emissio…

• EMRAH KALEMCİ

Abstract We report on an observational campaign on the bright black hole (BH) X-ray binary Swift J1727.8–1613 centered around five observations by the Imaging X-ray Polarimetry Explorer. These observations track for the first time the evolution of the X-ray polarization of a BH X-ray binary across a hard to soft state…

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ABSTRACT We report spectro-polarimetric results of an observational campaign of the bright neutron star low-mass X-ray binary Cyg X-2 simultaneously observed by IXPE, NICER, and INTEGRAL. Consistently with previous results, the broad-band spectrum is characterized by a lower-energy component, attributed to the accreti…

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• HAYRİ ERTAN