Zobrazeno 1 - 10
of 1 963
pro vyhledávání: '"Siegel, E."'
Autor:
Lanzinger, S., Biester, T., Siegel, E., Schneider, A., Schöttler, H., Placzek, K., Klinkert, C., Heidtmann, B., Ziegler, J., Holl, R.W.
Publikováno v:
In Environmental Research 15 September 2023 233
Autor:
Xu, X., Siegel, E. R.
We determine the density and mass distribution of dark matter within our Solar System. We explore the three-body interactions between dark matter particles, the Sun, and the planets to compute the amount of dark matter gravitationally captured over t
Externí odkaz:
http://arxiv.org/abs/0806.3767
Autor:
Siegel, E. R.
I demonstrate that precision timing of millisecond pulsars possess the capabilities of detecting the gravitational effects of intervening galactic substructure. This analysis is applicable to all types of collapsed baryons including stars, planets, a
Externí odkaz:
http://arxiv.org/abs/0801.3458
We demonstrate that pulsar timing measurements may potentially be able to detect the presence of dark matter substructure within our own galaxy. As dark matter substructure transits near the line-of-sight between a pulsar and an observer, the change
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702546
Autor:
Siegel, E. R., D'Amico, G., Di Napoli, E., Fu, L., Hertzberg, M. P., Huong, N. T. T., Palorini, F., Sellerholm, A.
This work investigates the dark matters structures that form on the smallest cosmological scales. We find that the types and abundances of structures which form at approximately Earth-mass scales are very sensitive to the nature of dark matter. We ex
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611864
Autor:
Siegel, E. R., Fry, J. N.
Although observations point to the neutrality and lack of currents on large scales in the universe, many mechanisms are known that can generate charges or currents during the early universe. We examine the question of survivability of relic charges a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609031
Autor:
Siegel, E. R., Fry, J. N.
Publikováno v:
Astrophys.J.651:627-635,2006
This paper examines the generation of seed magnetic fields due to the growth of cosmological perturbations. In the radiation era, different rates of scattering from photons induce local differences in the ion and electron density and velocity fields.
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604526
Autor:
Siegel, E. R., Fry, J. N.
Publikováno v:
Astrophys.J. 628 (2005) L1-L4
We evaluate the effect of inhomogeneity energy on the expansion rate of the universe. Our method is to expand to Newtonian order in potential and velocity but to take into account fully nonlinear density inhomogeneities. To linear order in density, k
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504421
Autor:
Siegel, E. R., Fry, J. N.
Publikováno v:
Phys.Lett. B612 (2005) 122-126
Inflationary cosmology predicts a low-amplitude graviton background across a wide range of frequencies. This Letter shows that if one or more extra dimensions exist, the graviton background may have a thermal spectrum instead, dependent on the fundam
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503162