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pro vyhledávání: '"Madsen, Jes"'
Autor:
Madsen, Jes
The bulk viscosity in quark matter is sufficiently high to reduce the effective pressure below the corresponding vapor pressure during density perturbations in neutron stars and strange stars. This leads to mechanical instability where the quark matt
Externí odkaz:
http://arxiv.org/abs/0909.3724
Autor:
Han, Ke, Ashenfelter, Jeffrey, Chikanian, Alexei, Emmet, William, Finch, Evan, Heinz, Andreas, Madsen, Jes, Majka, Richard, Monreal, Benjamin, Sandweiss, Jack
Publikováno v:
Phys.Rev.Lett.103:092302,2009
We report results from a search for strangelets (small chunks of Strange Quark Matter) in lunar soil using the Yale WNSL accelerator as a mass spectrometer. We have searched over a range in mass from A=42 to A=70 amu for nuclear charges 5, 6, 8, 9, a
Externí odkaz:
http://arxiv.org/abs/0903.5055
Autor:
Madsen, Jes
A reply to arXiv:0809.2310, "Comment on Universal Charge-Radius Relation for Subatomic and Astrophysical Compact Objects" [arXiv:0804.2140,PRL100(2008)151102]
Comment: Submitted to PRL
Comment: Submitted to PRL
Externí odkaz:
http://arxiv.org/abs/0810.2436
Autor:
Madsen, Jes
Publikováno v:
Phys.Rev.Lett.100:151102,2008
Electron-positron pair creation in supercritical electric fields limits the net charge of any static, spherical object, such as superheavy nuclei, strangelets, and Q-balls, or compact stars like neutron stars, quark stars, and black holes. For radii
Externí odkaz:
http://arxiv.org/abs/0804.2140
Publikováno v:
Astrophys.J.694:1019-1033,2009
The thermal evolution of neutron stars is coupled to their spin down and the resulting changes in structure and chemical composition. This coupling correlates stellar surface temperatures with rotational state as well as time. We report an extensive
Externí odkaz:
http://arxiv.org/abs/0801.0358
Autor:
Madsen, Jes
The properties of strangelets are reviewed and two experiments searching for them in cosmic rays are described. The prospects for strangelets as ultra-high energy cosmic rays beyond the classical GZK-cutoff are discussed.
Comment: 10 pages. Invi
Comment: 10 pages. Invi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612784
Autor:
Madsen, Jes
Astrophysical bounds on the properties and abundances of primordial quark nuggets and cosmic ray strangelets are reviewed. New experiments to search for cosmic ray strangelets in lunar soil and from the International Space Station are described. Anal
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612740
Consistency between deep crustal heating of strange stars in superbursters and soft X-ray transients
Autor:
Stejner, Morten, Madsen, Jes
Publikováno v:
Astron.Astrophys.458:523-532,2006
Both superbursters and soft X-ray transients probe the process of deep crustal heating in compact stars. It was recently shown that the transfer of matter from crust to core in a strange star can heat the crust and ignite superbursts provided certain
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603566
Autor:
Madsen, Jes
Stable lumps of quark matter may be present in cosmic rays at a flux level, which can be detected by high precision cosmic ray experiments sensitive to anomalous "nuclei" with high mass-to-charge ratio. The properties of these lumps, called strangele
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512512
Autor:
Stejner, Morten, Madsen, Jes
Publikováno v:
Phys.Rev.D72:123005,2005
The gap caused by a strong electric field between the quark surface and nuclear crust of a strange star is studied in an improved model including gravity and pressure as well as electrostatic forces. The transition from gap to crust is followed in de
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512144