Soft X-ray spectral variability of AM Herculis (2008)
Beuermann, K., Kholy, E. El, Reinsch, K.
Polars (AM Herculis binaries) are a prominent class of bright soft X-ray sources, many of which were discovered with ROSAT. We present a homogenous analysis of all the pointed ROSAT PSPC observations...
EX Hya is one of the few double-lined eclipsing cataclysmic variables that allow an accurate measurement of the binary masses. We analyze orbital phase-resolved UVES/ VLT high resolution...
Variability in the cycle length of the supersoft source RX J0513.9-6951 (2008)
Burwitz, V., Reinsch, K., Greiner, J., Meyer-Hofmeister, E., Meyer, F., Walter, F. M., ...
The supersoft X-ray binary RX J0513.9-6951 shows cyclic changes between optical-low / X-ray-on states and optical-high / X-ray-off states. It is supposed to be accreting close to the...
Variability in the cycle length of the supersoft source RX J0513.9-6951 (2008)
Burwitz, V., Reinsch, K., Greiner, J., Meyer-Hofmeister, E., Meyer, F., Walter, F. M., ...
Variability in the cycle length of the supersoft source RX J0513.9-6951 (2008)
Burwitz, V., Reinsch, K., Greiner, J., Meyer-Hofmeister, E., Meyer, F., Walter, F. M., ...
Beuermann, K., Euchner, F., Reinsch, K., Jordan, S., Gaensicke, B. T.
The magnetic fields of the accreting white dwarfs (WDs) in magnetic cataclysmic variables (mCVs) determine the accretion geometries, the emission properties, and the secular evolution of these...
The secondary star and distance of the polar V1309 Ori (2006)
Reinsch, K., Kim, Y., Beuermann, K.
The first phase-resolved JHK light curves of the eclipsing polar (AM Herculis binary) V1309 Ori are presented and interpreted. We separate the contributions from the secondary star and from other...
Euchner, F., Jordan, S., Beuermann, K., Reinsch, K., Gaensicke, B. T.
Aims: We analyse the magnetic field geometry of the magnetic DA white dwarf PG 1015+014 with our Zeeman tomography method. Methods: This study is based on rotation-phase resolved optical flux and...
AM HER - caught in the act with XMM-Newton! (2006)
Schwope, A., Schwarz, R., Gänsicke, B., Burwitz, V., Reinsch, K.
XMM-Newton observation of the long-period polar V1309 Ori: The case for pure blobby accretion (2005)
Schwarz, R., Reinsch, K., Beuermann, K., Burwitz, V.
Using XMM-Newton we have obtained the first X-ray observation covering a complete orbit of the longest period polar, V1309 Ori. The X-ray light curve is dominated by a short, bright phase interval...
Euchner, F., Reinsch, K., Jordan, S., Beuermann, K., Gaensicke, B. T.
We report time-resolved optical flux and circular polarization spectroscopy of the magnetic DA white dwarf HE 1045-0908 obtained with FORS1 at the ESO VLT. Considering published results, we estimate...
NLTE Analysis of the Ultra-short Period White-dwarf Binary RX J0806.3+1527 (2005)
Steiper, J., Reinsch, K., Dreizler, S.
RX J0806.3+1527 is suspected to be a double-degenerate white dwarf binary. We present first results of our NLTE analysis of its optical spectrum. The VLT/FORS1 data show a composite spectrum...
Surface Magnetic Field Distributions of the White Dwarfs PG 1015+014 and HE 1045-0908 (2004)
Euchner, F., Jordan, S., Reinsch, K., Beuermann, K., Gaensicke, B. T.
We have applied the method of Zeeman tomography to analyze the surface magnetic field structures of the white dwarfs PG 1015+014 and HE 1045-0908 from spin-phase resolved flux and circular...
The Structure and Origin of Magnetic Fields on Accreting White Dwarfs (2004)
Reinsch, K., Euchner, F., Beuermann, K., Jordan, S., Gaensicke, B. T.
We have started a systematic study of the field topologies of magnetic single and accreting white dwarfs using Zeeman tomography. Here we report on our analysis of phase-resolved flux and circular...
Haberl, F., Motch, C., Zavlin, V. E., Reinsch, K., Gaensicke, B. T., Cropper, M., ...
We report on the analysis of new X-ray data obtained with XMM-Newton and Chandra from two ROSAT-discovered X-ray dim isolated neutron stars. RX J0806.4-4123 was observed with XMM-Newton in April...
On the Nature of the Binary Components of RX J0806.3+1527 (2004)
Reinsch, K., Burwitz, V., Schwarz, R.
We present imaging circular polarimetry and near-infrared photometry of the suspected ultra-short period white-dwarf binary RX J0806.3+1527 obtained with the ESO VLT and discuss the implications for...
The Polarization Evolution of the Optical Afterglow of GRB 030329 (2004)
Greiner, J., Klose, S., Reinsch, K., Schmid, H.M., Sari, R., Hartmann, D.H., ...
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The polarization evolution of the optical afterglow of GRB 030329 (2004)
Greiner, J., Klose, S., Reinsch, K., Schmid, H. M., Sari, R., Hartmann, D. H., ...
On the nature of the binary components of rxj0806.3+1527 (2004)
Burwitz , V., Reinsch , K., Schwarz , R.
Presentamos polarimetría circular y fotometría en el infrarrojo cercano de RXJ0806.3+1527, que se sospecha es una binaria enana blanca con un período ultra-corto, obtenida con VLT ESO y discutimos...
The polarization evolution of the optical afterglow of GRB 030329 (2003)
Greiner, J., Klose, S., Reinsch, K., Schmid, H. M., Sari, R., Hartmann, D. H., ...
We report 31 polarimetric observations of the afterglow of GRB 030329 with high signal-to-noise and high sampling frequency. The data imply that the afterglow magnetic field has small coherence...
Evolution of the polarization of the optical afterglow of the gamma-ray burst GRB 030329 (2003)
Greiner, J., Klose, S., Reinsch, K., Schmid, H. M., Sari, R., Hartmann, D. H., ...
We report 31 polarimetric observations of the afterglow of GRB 030329 with high signal-to-noise and high sampling frequency. We establish the polarization light curve, detect sustained polarization...
Zeeman tomography of magnetic white dwarfs: General method and application to EF Eridani (2003)
Euchner, F., Beuermann, K., Reinsch, K., Jordan, S., Hessman, F. V., Gaensicke, B. T.
We have developed a new method to derive the magnetic field distribution on the surfaces of rotating magnetic white dwarfs from phase-resolved flux and circular polarization spectra. An optimization...
Evolution of the polarization of the optical afterglow of the gamma-ray burst GRB030329 (2003)
Greiner, J., Klose, S., Reinsch, K., Martin Schmid, H., Sari, R., Hartmann, D.H., ...
The association of a supernova with GRB030329 strongly supports the `collapsar' model of gamma-ray bursts, where a relativistic jet forms after the progenitor star collapses. Such jets cannot be...
Gamma-ray bursts: the most powerful cosmic explosions (2002)
Kaper, L., Castro-Tirado, A.J., Fruchter, A., Greiner, J., Hjorth, J., Pian, E., ...
Contents: The GRACE consortium. GRBs and their afterglows. Evidence for collimation. The origin of GRBs: possible progenitors. The supernova connection. GRB host galaxies.
Diagnostics of the accretion plasma in magnetic CVs from high-resolution X-ray spectroscopy (2002)
Burwitz, V., Reinsch, K., Haberl, F., Gänsicke, B. T., Predehl, P.
The high-field magnetic white dwarf LP 790-29: not a fast rotator (2001)
We have investigated the nature of the magnetic white dwarf LP 790-29 = LHS 2293 by polarimetric monitoring, searching for short-term variability. No periodicity was found and we can exclude rotation...
Multi-wavelength spectrophotometry of EX Hydrae (2001)
Eisenbart, S., Beuermann, K., Reinsch, K., Gaensicke, B. T.
We present phase-resolved infrared and optical spectrophotometry of the intermediate polar EX Hya supplemented by archival ultraviolet data. The spin-modulated emission from the accretion funnel and...
Vreeswijk, P. M., Fruchter, A., Kaper, L., Rol, E., Galama, T. J., Van Paradijs, J., ...
We present time-resolved optical spectroscopy of the afterglows of the gamma-ray bursts GRB 990510 and GRB 990712. Through the identification of several absorption lines in the first epoch GRB 990510...
A Newly Discovered SU UMa-Type Dwarf Nova, HS 1449+6415 (2000)
Nogami, D., Engels, D., Gaensicke, B. T., Pavlenko, E. P., Novak, R., Reinsch, K.
We report time-resolved photometric observations of the Hamburg Quasar Survey-selected dwarf nova HS 1449+6415 (= RX J1450.5+6403) during the interval from JD 2451672 to 2451724. During a long...
HS0907+1902: a new 4.2hr eclipsing dwarf nova (2000)
Gaensicke, B. T., Fried, R. E., Beuermann, K., Engels, D., Hessman, F. V., ...
We report on follow-up spectroscopy and photometry of the cataclysmic variable candidate HS0907+1902 selected from the Hamburg Quasar Survey. B, V, and R photometry obtained during the first observed...
A limit-cycle model for the binary supersoft X-ray source RX J0513.9-6951 (2000)
Reinsch, K., Van Teeseling, A., King, A. R., Beuermann, K.
We present new results of our X-ray monitoring of the transient binary supersoft X-ray source RX J0513.9-6951 in the LMC and of our re-analysis of optical light curves obtained during the MACHO...
Vreeswijk, P.M., Fruchter, A., Kaper, L., Rol, E., Galama, T.J., Paradijs, J.A. Van, ...
We present time-resolved optical spectroscopy of the afterglows of the gamma-ray bursts GRB 990510 and GRB 990712. Through the identification of several absorption lines in the first-epoch GRB 990510...
Gamma-ray bursts - pushing limits with the VLT (2000)
Pedersen, H., Boer, M., Beuermann, K., Castro-Tirado, A.J., Fruchter, A., ...
The 1995-96 decline of R Coronae Borealis: high-resolution optical spectroscopy (1999)
Kameswara Rao, N, Lambert, D. L, Adams, M. T, Doss, D. R, Gonzalez, G, Hatzes, A. P, ...
A set of high-resolution optical spectra of R CrB acquired before, during and after its 1995-96 decline is discussed. All of the components reported from earlier declines are seen. This novel data...
Astronomy And Astrophysics (1999)
K. Beuermann, V. Burwitz, K. Reinsch
. We report observations of a new AM Herculis binary identified as the optical counterpart of the X-ray source RX J1313.2--3259, detected during the ROSAT AllSky Survey (RASS). It has an orbital...
RX J1313.2-3259, a long-period Polar discovered with ROSAT (1999)
Beuermann, K., Burwitz, V., Reinsch, K., Schwope, A. D.
We report observations of a new AM Herculis binary identified as the optical counterpart of the X-ray source RX J1313.2-3259, detected during the ROSAT All-Sky Survey (RASS). It has an orbital period...
HST/STIS ultraviolet spectroscopy of the supersoft X-ray source RX J0439.8-6809 (1999)
Van Teeseling, A., Gaensicke, B. T., Beuermann, K., Dreizler, S., Rauch, T., Reinsch, K.
We present ultraviolet observations of the supersoft X-ray source RXJ0439.8-6809 obtained with the Hubble Space Telescope Imaging Spectrograph. The ultraviolet spectrum is a very blue continuum...
VLT observations of GRB 990510 and its environment (1999)
Beuermann, K., Hessman, F. V., Reinsch, K., Nicklas, H., Vreeswijk, P. M., Galama, T. J., ...
We present BVRI photometry and spectrophotometry of GRB990510 obtained with the ESO VLT/Antu telescope during the late decline phase. Between days 8 and 29 after the burst, the afterglow faded from...
VLT observations of GRB 990510 and its environment (1999)
Beuermann, K., Hessman, F.V., Reinsch, K., Nicklas, H., Vreeswijk, P.M., Galama, T.J., ...
Identification of selected sources from the ROSAT Galactic Plane Survey - I (1997)
Motch, C., Guillout, P., Haberl, F., Krautter, J., Pakull, M. W., Pietsch, W., ...
We report on optical searches in the error circles of 93 ROSAT survey sources located at low galactic latitudes (|b| < 20 deg). These sources were extracted from the ROSAT Galactic Plane Survey using...
The ROSAT Galactic Plane Survey: analysis of a low latitude sample area in Cygnus (1996)
Motch, C., Guillout, P., Haberl, F., Pakull, M., Pietsch, W., Reinsch, K.
We present the analysis of the point source content of a low galactic latitude region selected from the ROSAT all-sky survey. The test field is centered at l = 90deg, b = 0deg and has an area of 64.5...