Zobrazeno 1 - 10
of 1 959
pro vyhledávání: '"Harper, G"'
Emission lines from Rydberg transitions are detected for the first time from a region close to the surface of Betelgeuse. The H30${\alpha}$ line is observed at 231.905 GHz, with a FWHM ~42 km/s and extended wings. A second line at 232.025 GHz (FWHM ~
Externí odkaz:
http://arxiv.org/abs/2404.06501
Autor:
Aker, M., Altenmüller, K., Amsbaugh, J. F., Arenz, M., Babutzka, M., Bast, J., Bauer, S., Bechtler, H., Beck, M., Beglarian, A., Behrens, J., Bender, B., Berendes, R., Berlev, A., Besserer, U., Bettin, C., Bieringer, B., Blaum, K., Block, F., Bobien, S., Bohn, J., Bokeloh, K., Bolz, H., Bornschein, B., Bornschein, L., Böttcher, M., Bouquet, H., Boyd, N. M., Brunst, T., Burritt, T. H., Caldwell, T. S., Chaoui, Z., Chilingaryan, S., Choi, W., Corona, T. J., Cox, G. A., Debowski, K., Deffert, M., Descher, M., Barrero, D. Díaz, Doe, P. J., Dragoun, O., Drexlin, G., Dunmore, J. A., Dyba, S., Edzards, F., Eichelhardt, F., Eitel, K., Ellinger, E., Engel, R., Enomoto, S., Erhard, M., Eversheim, D., Fedkevych, M., Felden, A., Fischer, S., Formaggio, J. A., Fränkle, F. M., Franklin, G. B., Frenzel, H., Friedel, F., Fulst, A., Gauda, K., Gehring, R., Gil, W., Glück, F., Görhardt, S., Grimm, J., Grohmann, S., Groh, S., Grössle, R., Gumbsheimer, R., Hackenjos, M., Häßler, D., Hannen, V., Harms, F., Harper, G. C., Hartmann, J., Haußmann, N., Heizmann, F., Helbing, K., Held, M., Hickford, S., Hilk, D., Hillen, B., Hiller, R., Hillesheimer, D., Hinz, D., Höhn, T., Holzmann, S., Horn, S., Hötzel, M., Houdy, T., Howe, M. A., Huber, A., James, T., Jansen, A., Kaiser, M., Karl, C., Kazachenko, O., Kellerer, J., Kippenbrock, L., Kleesiek, M., Kleifges, M., Kleinfeller, J., Klein, M., Köllenberger, L., Kopmann, A., Korzeczek, M., Kosmider, A., Kovalík, A., Krasch, B., Krause, H., Kraus, M., Kuckert, L., Kumb, A., Kunka, N., Lasserre, T., La Cascio, L., Lebeda, O., Leber, M. L., Lehnert, B., Leiber, B., Letnev, J., Lewis, R. J., Le, T. L., Lichter, S., Lokhov, A., Poyato, J. M. Lopez, Machatschek, M., Malcherek, E., Mark, M., Marsteller, A., Martin, E. L., Mehret, K., Meloni, M., Melzer, C., Menshikov, A., Mertens, S., Minter, L. I., Monreal, B., Mostafa, J., Müller, K., Myers, A. W., Naumann, U., Neumann, H., Niemes, S., Oelpmann, P., Off, A., Ortjohann, H. -W., Osipowicz, A., Ostrick, B., Parno, D. S., Peterson, D. A., Plischke, P., Poon, A. W. P., Prall, M., Priester, F., Ranitzsch, P. C. -O., Reich, J., Renschler, P., Rest, O., Rinderspacher, R., Robertson, R. G. H., Rodejohann, W., Rodenbeck, C., Rohr, P., Röllig, M., Röttele, C., Rupp, S., Ryšavý, M., Sack, R., Saenz, A., Sagawe, M., Schäfer, P., Schaller, A., Schimpf, L., Schlösser, K., Schlösser, M., Schlüter, L., Schneidewind, S., Schön, H., Schönung, K., Schrank, M., Schulz, B., Schwarz, J., Šefčík, M., Seitz-Moskaliuk, H., Seller, W., Sibille, V., Siegmann, D., Slezák, M., Spanier, F., Steidl, M., Sturm, M., Sun, M., Tcherniakhovski, D., Telle, H. H., Thorne, L. A., Thümmler, T., Titov, N., Tkachev, I., Trost, N., Valerius, K., VanDevender, B. A., Van Wechel, T. D., Vénos, D., Verbeek, A., Vianden, R., Hernández, A. P. Vizcaya, Vogt, K., Wall, B. L., Wandkowsky, N., Weber, M., Weingardt, H., Weinheimer, C., Weiss, C., Welte, S., Wendel, J., Wierman, K. J., Wilkerson, J. F., Wolf, J., Wüstling, S., Xu, W., Yen, Y. -R., Zacher, M., Zadoroghny, S., Zboril, M., Zeller, G.
The KArlsruhe TRItium Neutrino (KATRIN) experiment, which aims to make a direct and model-independent determination of the absolute neutrino mass scale, is a complex experiment with many components. More than 15 years ago, we published a technical de
Externí odkaz:
http://arxiv.org/abs/2103.04755
Autor:
O'Gorman, E., Harper, G. M., Ohnaka, K., Feeney-Johansson, A., Wilkeneit-Braun, K., Brown, A., Guinan, E. F., Lim, J., Richards, A. M. S., Ryde, N., Vlemmings, W. H. T.
We first present spatially resolved ALMA and VLA continuum observations of the early-M red supergiant Antares to search for the presence of a chromosphere at radio wavelengths. We resolve the free-free emission of the Antares atmosphere at 11 unique
Externí odkaz:
http://arxiv.org/abs/2006.08023
Autor:
Montargès, M., Homan, W., Keller, D., Clementel, N., Shetye, S., Decin, L., Harper, G. M., Royer, P., Winters, J. M., Bertre, T. Le, Richards, A. M. S.
Publikováno v:
MNRAS 485, 2417 (2019)
Red supergiant stars are surrounded by a gaseous and dusty circumstellar environment created by their mass loss which spreads heavy elements into the interstellar medium. The structure and the dynamics of this envelope are crucial to understand the p
Externí odkaz:
http://arxiv.org/abs/1903.07129
Autor:
O'Gorman, E., Kervella, P., Harper, G. M., Richards, A. M. S., Decin, L., Montargès, M., McDonald, I.
The mechanisms responsible for heating the extended atmospheres of early-M spectral-type supergiants are poorly understood. So too is the subsequent role these mechanisms play in driving the large mass-loss rates of these stars. Here we present ALMA
Externí odkaz:
http://arxiv.org/abs/1706.06021
Autor:
Harper, G. M., Brown, A., Guinan, E. F., O'Gorman, E., Richards, A. M. S., Kervella, P., Decin, L.
We provide an update for the astrometric solution for the Type II supernova progenitor Betelgeuse using the revised Hipparcos Intermediate Astrometric Data (HIAD) of van Leeuwen, combined with existing VLA and new e-MERLIN and ALMA positions. The 200
Externí odkaz:
http://arxiv.org/abs/1706.06020
Autor:
Triambak, S., Phuthu, L., García, A., Harper, G. C., Orce, J. N., Short, D. A., Steininger, S. P. R., Varela, A. Diaz, Dunlop, R., Jamieson, D. S., Richter, W. A., Ball, G. C., Garrett, P. E., Svensson, C. E., Wrede, C.
Publikováno v:
Phys. Rev. C 95, 035501 (2017)
A previous measurement of the $\beta-\gamma$ directional coefficient in $^{22}$Na $\beta$ decay was used to extract recoil-order form factors. The data indicate the requirement of a significant induced-tensor matrix element for the decay.This conclus
Externí odkaz:
http://arxiv.org/abs/1701.05545
Autor:
Wedemeyer, S., Fleck, B., Battaglia, M., Labrosse, N., Fleishman, G., Hudson, H., Antolin, P., Alissandrakis, C., Ayres, T., Ballester, J., Bastian, T., Black, J., Benz, A., Brajsa, R., Carlsson, M., Costa, J., DePontieu, B., Doyle, G., de Castro, G. Gimenez, Gunár, S., Harper, G., Jafarzadeh, S., Loukitcheva, M., Nakariakov, V., Oliver, R., Schmieder, B., Selhorst, C., Shimojo, M., Simões, P., Soler, R., Temmer, M., Tiwari, S., Van Doorsselaere, T., Veronig, A., White, S., Yagoubov, P., Zaqarashvili, T.
This document was created by the Solar Simulations for the Atacama Large Millimeter Observatory Network (SSALMON) in preparation of the first regular observations of the Sun with the Atacama Large Millimeter/submillimeter Array (ALMA), which are anti
Externí odkaz:
http://arxiv.org/abs/1601.00587
Autor:
Indriolo, Nick, Neufeld, D. A., DeWitt, C. N., Richter, M. J., Boogert, A. C. A., Harper, G. M., Jaffe, D. T., Kulas, K. R., McKelvey, M. E., Ryde, N., Vacca, W.
Publikováno v:
ApJ 802 (2015) L14
We present high spectral resolution (~3 km/s) observations of the nu_2 ro-vibrational band of H2O in the 6.086--6.135 micron range toward the massive protostar AFGL 2591 using the Echelon-Cross-Echelle Spectrograph (EXES) on the Stratospheric Observa
Externí odkaz:
http://arxiv.org/abs/1502.06611
Autor:
Ryde, N., Lambert, J., Farzone, M., Richter, M. J., Josselin, E., Harper, G. M., Eriksson, K., Greathouse, T. K.
Publikováno v:
A&A 573, A28 (2015)
The structures of the outer atmospheres of red giants are very complex. The notion of large optically thick molecular spheres around the stars (MOLspheres) has been invoked in order to explain e.g. spectro-interferometric observations. However, high-
Externí odkaz:
http://arxiv.org/abs/1410.3999