Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Berg, M. van den"'
We consider the torsion function for the Dirichlet Laplacian $-\Delta$, and for the Schr\"odinger operator $- \Delta + V$ on an open set $\Omega\subset \R^m$ of finite Lebesgue measure $0<|\Omega|<\infty$ with a real-valued, non-negative, measurable
Externí odkaz:
http://arxiv.org/abs/2005.06366
Autor:
Heinke, C. O., Ivanov, M. G., Koch, E. W., Andrews, R., Chomiuk, L., Cohn, H. N., Crothers, S., de Boer, T., Ivanova, N., Kong, A. K. H., Leigh, N. W. C., Lugger, P. M., Nelson, L., Parr, C. J., Rosolowsky, E. W., Ruiter, A. J., Sarazin, C. L., Shaw, A. W., Sivakoff, G. R., Berg, M. van den
The dynamical production of low-mass X-ray binaries and brighter cataclysmic variables (CVs) in dense globular clusters is well-established. We investigate how the X-ray emissivity of fainter X-ray binaries (principally CVs and coronally active binar
Externí odkaz:
http://arxiv.org/abs/2001.09476
Let $\Omega$ be an open convex set in ${\mathbb R}^m$ with finite width, and let $v_{\Omega}$ be the torsion function for $\Omega$, i.e. the solution of $-\Delta v=1, v\in H_0^1(\Omega)$. An upper bound is obtained for the product of $\Vert v_{\Omega
Externí odkaz:
http://arxiv.org/abs/1811.04503
Autor:
Tudor, V., Miller-Jones, J. C. A., Knigge, C., Maccarone, T. J., Tauris, T. M., Bahramian, A., Chomiuk, L., Heinke, C. O., Sivakoff, G. R., Strader, J., Plotkin, R. M., Soria, R., Albrow, M. D., Anderson, G. E., Berg, M. van den, Bernardini, F., Bogdanov, S., Britt, C. T., Russell, D. M., Zurek, D. R.
To confirm the nature of the donor star in the ultra-compact X-ray binary candidate 47 Tuc X9, we obtained optical spectra (3,000$-$10,000 {\AA}) with the Hubble Space Telescope / Space Telescope Imaging Spectrograph. We find no strong emission or ab
Externí odkaz:
http://arxiv.org/abs/1802.00161
Autor:
Berg, M. van den, Hollander, F. den
We obtain bounds for the expected loss of torsional rigidity of a cylinder $\Omega_L=(-L/2,L/2) \times \Omega\subset \R^3$ of length $L$ due to a Brownian fracture that starts at a random point in $\Omega_L,$ and runs until the first time it exits $\
Externí odkaz:
http://arxiv.org/abs/1711.09838
Autor:
Ridolfi, A., Freire, P. C. C., Kramer, M., Bassa, C. G., Camilo, F., D'Amico, N., Desvignes, G., Heinke, C. O., Jordan, C., Lorimer, D. R., Lyne, A., Manchester, R. N., Pan, Z., Sarkissian, J., Torne, P., Berg, M. van den, Venkataraman, A., Wex, N.
Multi-decade observing campaigns of the globular clusters 47 Tucanae and M15 have led to an outstanding number of discoveries. Here, we report on the latest results of the long-term observations of the pulsars in these two clusters. For most of the p
Externí odkaz:
http://arxiv.org/abs/1711.06086
Autor:
Sandoval, L. E. Rivera, Santisteban, J. V. Hernandez, Degenaar, N., Wijnands, R., Knigge, C., Miller, J. M., Reynolds, M., Altamirano, D., Berg, M. van den, Hill, A.
We report mid-UV (MUV) observations taken with HST/WFC3, Swift/UVOT and GALEX/NUV of the transitional millisecond pulsars XSS J12270-4859 and PSR J1023+0038 during their radio pulsar states. Both systems were detected in our images and showed MUV var
Externí odkaz:
http://arxiv.org/abs/1708.07041
Autor:
Sandoval, L. E. Rivera, Berg, M. van den, Heinke, C. O., Cohn, H. N., Lugger, P. M., Anderson, J., Cool, A. M., Edmonds, P. D., Wijnands, R., Ivanova, N., Grindlay, J. E.
We present 22 new (+3 confirmed) cataclysmic variables (CVs) in the non core-collapsed globular cluster 47 Tucanae (47 Tuc). The total number of CVs in the cluster is now 43, the largest sample in any globular cluster so far. For the identifications
Externí odkaz:
http://arxiv.org/abs/1705.07100
Autor:
Ridolfi, A., Freire, P., Torne, P., Heinke, C. O., Berg, M. van den, Jordan, C., Kramer, M., Bassa, C. G., Sarkissian, J., D'Amico, N., Lorimer, D., Camilo, F., Manchester, R. N., Lyne, A.
For the past couple of decades, the Parkes radio telescope has been regularly observing the millisecond pulsars in 47 Tucanae (47 Tuc). This long-term timing program was designed to address a wide range of scientific issues related to these pulsars a
Externí odkaz:
http://arxiv.org/abs/1607.07248
Publikováno v:
Integral Equations and Operator Theory 86 (2016) 579-600
Let $\Omega$ be an open set in Euclidean space with finite Lebesgue measure $|\Omega|$. We obtain some properties of the set function $F:\Omega\mapsto \R^+$ defined by $$ F(\Omega)=\frac{T(\Omega)\lambda_1(\Omega)}{|\Omega|} ,$$ where $T(\Omega)$ and
Externí odkaz:
http://arxiv.org/abs/1602.04618