Výsledky vyhledávání - "Sub Experiment. Astrophysics begr 1/1/14"

Siegel modular forms and black hole entropy

Autor: Belin, Alexandre, Castro, Alejandra, Vieira Gomes, Joao, Keller, Christoph A., Sub String Theory Cosmology and ElemPart, Sub Experiment. Astrophysics begr 1/1/14, Theoretical Physics

Publikováno v: Journal of High Energy Physics, 4(57). Springer Verlag
Journal of High Energy Physics, Vol 2017, Iss 4, Pp 1-49 (2017)
Journal of High Energy Physics, 2017 (4)
Journal of High Energy Physics
Journal of High Energy Physics, 2017(4):57. Springer Verlag

We discuss the application of Siegel Modular Forms to Black Hole entropy counting. The role of the Igusa cusp form χ 10 in the D1D5P system is well-known, and its transformation properties are what allows precision microstate counting in this case.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcc6e0057662c4ea7794da369ebc80eb
https://doi.org/10.1007/jhep04(2017)057

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First detection of linear polarization in the line profiles of active cool stars

Autor: Kochukhov, O., Makaganiuk, V., Piskunov, N., Snik, F., Jeffers, S.V., Johns-Krull, C. M., Keller, C.U., Rodenhuis, M., Valenti, J. A., Astrophysics, Sub Experiment. Astrophysics begr 1/1/14

Publikováno v: Astrophysical journal. Letters, 732(2), L19/1. IOP PUBLISHING LTD

The application of high-resolution spectropolarimetry has led to major progress in understanding the magnetism and activity of late-type stars. During the last decade, magnetic fields have been discovered and mapped for many types of active cool star

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f42879da38cac56e8829b873cee81bb0
http://arxiv.org/abs/1103.6028

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The thermal structure and the location of the snow line in the protosolar nebula: Axisymmetric models with full 3-D radiative transfer

Autor: Min, M., Dullemond, C.P., Kama, M., Dominik, C., Astrophysics, Sub Experiment. Astrophysics begr 1/1/14

Publikováno v: Icarus, 212, 416-426
Icarus, 212(1), 416. Academic Press Inc.
Icarus, 212, 1, pp. 416-426
Icarus, 212(1), 416-426. Academic Press Inc.

The precise location of the water ice condensation front ('snow line') in the protosolar nebula has been a debate for a long time. Its importance stems from the expected substantial jump in the abundance of solids beyond the snow line, which is condu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3891d0f49e5a2d69f7e8fc775a73c1b6
http://hdl.handle.net/2066/92490

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Chemical spots in the absence of magnetic field in the binary HgMn star 66 Eridani

Autor: Makaganiuk, V., Kochukhov, O., Piskunov, N., Jeffers, S.V., Johns-Krull, C. M., Keller, C.U., Rodenhuis, M., Snik, F., Stempels, H. C., Valenti, J. A., Astrophysics, Sub Experiment. Astrophysics begr 1/1/14

Publikováno v: Astronomy and Astrophysics, 529, A160/1. EDP Sciences

According to our current understanding, a subclass of the upper main sequence chemically peculiar stars, called mercury-manganese (HgMn), is non-magnetic. Nevertheless, chemical inhomogeneities were recently discovered on their surfaces. At the same

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f61197abe5a8f74e689427eac428b55

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Dust coagulation and fragmentation in molecular clouds. II. The opacity of the dust aggregate size distribution

Autor: Ormel, C.W., Min, M., Tielens, A. G. G. M., Dominik, C., Paszun, D., Astrophysics, Sub Experiment. Astrophysics begr 1/1/14

Publikováno v: Astronomy & Astrophysics, 532. EDP Sciences
Astronomy and Astrophysics, 532, A43/1. EDP Sciences

The dust size distribution in molecular clouds can be strongly affected by ice-mantle formation and (subsequent) grain coagulation. Following previous work where the dust size distribution has been calculated from a state-of-the art collision model f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1876502716ac408b43e5e8e2e970744
https://dspace.library.uu.nl/handle/1874/210701

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Data-reduction techniques for high-contrast imaging polarimetry. Applications to ExPo

Autor: Canovas Cabrera, H., Rodenhuis, M., Jeffers, S.V., Min, M., Keller, C.U., Astrophysics, Sub Experiment. Astrophysics begr 1/1/14

Publikováno v: Astronomy and Astrophysics, 531(A102). EDP Sciences

Imaging polarimetry is a powerful tool for detecting and characterizing exoplanets and circumstellar environments. Polarimetry allows a separation of the light coming from an unpolarized source such as a star and the polarized source such as a planet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37ffc1728857804ee03a682103aa070b
https://dspace.library.uu.nl/handle/1874/210156

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The search for magnetic fields in mercury-manganese stars

Publikováno v: Astronomy and Astrophysics, 525(5), A97/1. EDP Sciences

We performed a highly sensitive search for magnetic fields on a large set of HgMn stars. With the aid of a new polarimeter attached to the HARPS spectrometer at the ESO 3.6m-telescope, we obtained high-quality circular polarization spectra of 41 sing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::783ec3b8199ada2126e6fcf76f5986b3
http://arxiv.org/abs/1010.3931

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High contrast imaging polarimetry of circumstellar environments

Autor: Canovas Cabrera, H., Astrophysics, Sub Experiment. Astrophysics begr 1/1/14

The work presented in this thesis is based on the analysis of the results produced by ExPo, the Extreme Polarimeter. ExPo is an imaging polarimeter that has been designed and built by the group of prof. Christoph Keller, at Utrecht University. The pu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::d6ec2c78344a1af8445ca9549a54a45e
https://dspace.library.uu.nl/handle/1874/209847

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