A dynamic combinatorial library (DCL) screening approach is described that permits direct identification of the effective (from ineffective) combination of building blocks in the equilibrating DCL. The approach uses Fourier transform ion cyclotron resonance mass spectrometry (FTICR MS) together with sustained off-resonance irradiation collision activated dissociation (SORI-CAD) to detect noncov...

The cyclotron line in the spectrum of the accretion-powered pulsar Her X-1 offers an opportunity to assess the ability of the BATSE Spectroscopy Detectors (SDs) to detect lines like those seen in some GRBs. Preliminary analysis of an initial SD pulsar mode observation of Her X-1 indicated a cyclotron line at an energy of ≈ 44 keV, rather than at the expected energy of ≈ 36 keV. Our analysis of ...

Using a consistent set of models, we parameterized the X-ray spectra of all accreting pulsars in the Rossi X-ray Timing Explorer database which exhibit Cyclotron Resonance Scattering Features (CRSFs, or cyclotron lines). These sources in our sample are Her X-1, 4U 0115+63, Cen X-3, 4U 1626-67, XTE J1946-274, Vela X-1, 4U 1907+09, 4U 1538-52, GX 301-2, and 4U 0352+309 (X Per). We searched for co...

Electrons in graphene can travel for several microns without scattering at low temperatures, and their motion becomes ballistic, following classical trajectories. When a magnetic field B is applied perpendicular to the plane, electrons follow cyclotron orbits. Magnetic focusing occurs when electrons injected from one narrow contact focus onto a second contact located an integer number of cyclot...

We report on the discovery by the Hamburg Quasar Survey of a magnetic CV with a pure cyclotron emission line spectrum. With a photometric and spectroscopic period of 167.6 min it is located in the CV period gap. From 91 spectra taken over 1.2 orbital periods we identify the n = 2 and 3 cyclotron harmonics of the main accretion pole with 60 MG as well as the n = 2 and 3 modes of the secondary po...

The present paper reports on the RXTE observations of the binary X-ray pulsar 4U 0115+63, covering an outburst in 1999 March-April with 44 pointings. The 3−30 keV PCA spectra and the 15−50 keV HEXTE spectra were analyzed jointly for the cyclotron resonance features. When the 3−50 keV luminosity at an assumed distance of 7 kpc was in the range (5−13)×10 erg s, harmonic double cyclotron features ...