Zobrazeno 1 - 10
of 3 461
pro vyhledávání: '"Widmann, P."'
Autor:
Xuan, Jerry W., Mérand, A., Thompson, W., Zhang, Y., Lacour, S., Blakely, D., Mawet, D., Oppenheimer, R., Kammerer, J., Batygin, K., Sanghi, A., Wang, J., Ruffio, J. -B., Liu, M. C., Knutson, H., Brandner, W., Burgasser, A., Rickman, E., Bowens-Rubin, R., Salama, M., Balmer, W., Blunt, S., Bourdarot, G., Caselli, P., Chauvin, G., Davies, R., Drescher, A., Eckart, A., Eisenhauer, F., Fabricius, M., Feuchtgruber, H., Finger, G., Schreiber, N. M. Förster, Garcia, P., Genzel, R., Gillessen, S., Grant, S., Hartl, M., Haußmann, F., Henning, T., Hinkley, S., Hönig, S. F., Horrobin, M., Houllé, M., Janson, M., Kervella, P., Kral, Q., Kreidberg, L., Bouquin, J. -B. Le, Lutz, D., Mang, F., Marleau, G. -D., Millour, F., More, N., Nowak, M., Ott, T., Otten, G., Paumard, T., Rabien, S., Rau, C., Ribeiro, D. C., Bordoni, M. Sadun, Sauter, J., Shangguan, J., Shimizu, T. T., Sykes, C., Soulain, A., Spezzano, S., Straubmeier, C., Stolker, T., Sturm, E., Subroweit, M., Tacconi, L. J., van Dishoeck, E. F., Vigan, A., Widmann, F., Wieprecht, E., Winterhalder, T. O., Woillez, J.
Owing to their similarities with giant exoplanets, brown dwarf companions of stars provide insights into the fundamental processes of planet formation and evolution. From their orbits, several brown dwarf companions are found to be more massive than
Externí odkaz:
http://arxiv.org/abs/2410.11953
Autor:
Wu, Zexuan, Dong, Subo, Mérand, A., Kochanek, Christopher S., Mróz, Przemek, Shangguan, Jinyi, Christie, Grant, Tan, Thiam-Guan, Bensby, Thomas, Bland-Hawthorn, Joss, Buder, Sven, Eisenhauer, Frank, Gould, Andrew P., Kos, Janez, Natusch, Tim, Sharma, Sanjib, Udalski, Andrzej, Woillez, J., Buckley, David A. H., Thompson, I. B., Dayem, Karim Abd El, Alecian, Evelyne, Berdeu, Anthony, Berger, Jean-Philippe, Bourdarot, Guillaume, Brandner, Wolfgang, Davies, Richard I., Defrère, Denis, Dougados, Catherine, Drescher, Antonia, Eckart, Andreas, Fabricius, Maximilian, Feuchtgruber, Helmut, Schreiber, Natascha M. Förster, Garcia, Paulo, Genzel, Reinhard, Gillessen, Stefan, Heißel, Gernot, Hönig, Sebastian, Houlle, Mathis, Kervella, Pierre, Kreidberg, Laura, Lacour, Sylvestre, Lai, Olivier, Laugier, Romain, Bouquin, Jean-Baptiste Le, Leftley, James, Lopez, Bruno, Lutz, Dieter, Mang, Felix, Millour, Florentin, Montargès, Miguel, Nowacki, Hugo, Nowak, Mathias, Ott, Thomas, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Petrov, Romain, Petrucci, Pierre-Olivier, Pourre, Nicolas, Rabien, Sebastian, Ribeiro, Diogo C., Robbe-Dubois, Sylvie, Bordoni, Matteo Sadun, Santos, Daryl, Sauter, Jonas, Scigliuto, Jules, Shimizu, Taro T., Straubmeier, Christian, Sturm, Eckhard, Subroweit, Matthias, Sykes, Calvin, Tacconi, Linda, Vincent, Frédéric, Widmann, Felix
We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary perturbations, complicating the analysis, but the joint
Externí odkaz:
http://arxiv.org/abs/2409.13015
Autor:
The GRAVITY Collaboration, Dayem, Karim Abd El, Abuter, Roberto, Aimar, Nicolas, Seoane, Pau Amaro, Amorim, Antonio, Beck, Julie, Berger, Jean Philippe, Bonnet, Henri, Bourdarot, Guillaume, Brandner, Wolfgang, Cardoso, Vitor, Dolcetta, Roberto Capuzzo, Clénet, Yann, Davies, Ric, de Zeeuw, Tim, Drescher, Antonia, Eckart, Andreas, Eisenhauer, Frank, Feuchtgruber, Helmut, Finger, Gert, Schreiber, Natascha M. Förster, Foschi, Arianna, Gao, Feng, Garcia, Paulo, Gendron, Eric, Genzel, Reinhard, Gillessen, Stefan, Hartl, Michael, Haubois, Xavier, Haussman, Frank, Heißel, Gernot, Hennig, Thomas, Hippler, Stefan, Horrobin, Matthew, Jochum, Lieselotte, Jocou, Laurent, Kaufer, Andreas, Kervella, Pierre, Lacour, Sylvestre, Lapeyrère, Vincent, Bouquin, Jean B. Le, Léna, Pierre, Lutz, Dieter, Mang, Felix, More, Nikhil, Ott, Thomas, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Pfuhl, Oliver, Rabien, Sebastien, Ribeiro, Diogo C., Bordoni, Matteo Sadun, Scheithauer, Silvia, Shangguan, Jinyi, Shimizu, Taro, Stadler, Julia, Straub, Odele, Straubmeier, Christian, Sturm, Eckhard, Tacconi, Linda J., Urso, Irene, Vincent, Frederic, Von Fellenberg, Sebastiano D., Widmann, Felix, Wieprecht, Ekkehard, Woillez, Julien, Zhang, Fupeng
Studying the orbital motion of stars around Sagittarius A* in the Galactic Center provides a unique opportunity to probe the gravitational potential near the supermassive black hole at the heart of our Galaxy. Interferometric data obtained with the G
Externí odkaz:
http://arxiv.org/abs/2409.12261
Autor:
Mroz, P., Dong, S., Merand, A., Shangguan, J., Woillez, J., Gould, A., Udalski, A., Eisenhauer, F., Ryu, Y. -H., Wu, Z., Liu, Z., Yang, H., Bourdarot, G., Defrere, D., Drescher, A., Fabricius, M., Garcia, P., Genzel, R., Gillessen, S., Honig, S. F., Kreidberg, L., Bouquin, J. -B. Le, Lutz, D., Millour, F., Ott, T., Paumard, T., Sauter, J., Shimizu, T. T., Straubmeier, C., Subroweit, M., Widmann, F., Szymanski, M. K., Soszynski, I., Pietrukowicz, P., Kozlowski, S., Poleski, R., Skowron, J., Ulaczyk, K., Gromadzki, M., Rybicki, K., Iwanek, P., Wrona, M., Mroz, M. J, Albrow, M. D., Chung, S. -J., Han, C., Hwang, K. -H., Jung, Y. K., Shin, I. -G., Shvartzvald, Y., Yee, J. C., Zang, W., Cha, S. -M., Kim, D. -J., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W.
Interferometric observations of gravitational microlensing events offer an opportunity for precise, efficient, and direct mass and distance measurements of lensing objects, especially those of isolated neutron stars and black holes. However, such obs
Externí odkaz:
http://arxiv.org/abs/2409.12227
Autor:
Bourdarot, G., Eisenhauer, F., Yazıcı, S., Feuchtgruber, H., Bouquin, J-B Le, Hartl, M., Rau, C., Graf, J., More, N., Wieprecht, E., Haussmann, F., Widmann, F., Lutz, D., Genzel, R., Gonte, F., Oberti, S., Kolb, J., Woillez, J., Bonnet, H., Schuppe, D., Brara, A., Hartwig, J., Goldbrunner, A., Furchtsam, C., Soller, F., Czempiel, S., Eibl, J., Huber, D., Uysal, S., Treffler, I., Ozdemir, H., Gopinatha, V., Bourget, P., Berdeu, A., Gillessen, S., Ott, T., Berio, P., Boebion, O., Millour, F., Dembet, R., Edouard, C., Gomes, T., Shimizu, T., Drescher, A., Fabricius, M., Shangguan, J., Lagarde, S., Robbe-Dubois, S., Allouche, F., Nowacki, H., Defrere, D., Garcia, P. J. V., Hoenig, S., Kreidbergg, L., Paumard, T., Straubmeier, C.
Publikováno v:
SPIE Proceedings, Yokohama 2024
We present the Wavefront Sensor units of the Gravity Plus Adaptive Optics (GPAO) system, which will equip all 8m class telescopes of the VLTI and is an instrumental part of the GRAVITY+ project. It includes two modules for each Wavefront Sensor unit:
Externí odkaz:
http://arxiv.org/abs/2409.08438
Autor:
GRAVITY Collaboration, Nowacki, H., Perraut, K., Labadie, L., Bouvier, J., Dougados, C., Benisty, M., Wojtczak, J. A., Soulain, A., Alecian, E., Brandner, W., Garatti, A. Caratti o, Lopez, R. Garcia, Ganci, V., Sánchez-Bermúdez, J., Berger, J. -P., Bourdarot, G., Caselli, P., Clénet, Y., Davies, R., Drescher, A., Eckart, A., Eisenhauer, F., Fabricius, M., Feuchtgruber, H., Förster-Schreiber, N. M., Garcia, P., Gendron, E., Genzel, R., Gillessen, S., Grant, S., Henning, T., Jocou, L., Kervella, P., Kurtovic, N., Lacour, S., Lapeyrère, V., Bouquin, J. -B. Le, Lutz, D., Mang, F., Ott, T., Paumard, T., Perrin, G., Rabien, S., Ribeiro, D., Bordoni, M. Sadun, Scheithauer, S., Shangguan, J., Shimizu, T., Spezzano, S., Straubmeier, C., Sturm, E., Tacconi, L., van Dishoeck, E., Vincent, F., Widmann, F.
Publikováno v:
A&A 690, A123 (2024)
The dust- and gas-rich protoplanetary disks around young stellar systems play a key role in star and planet formation. While considerable progress has recently been made in probing these disks on large scales of a few tens of astronomical units (au),
Externí odkaz:
http://arxiv.org/abs/2408.02374
Autor:
Killian, Carina, Blumer, Philipp, Crivelli, Paolo, Kloppenburg, Daniel, Nez, Francois, Nesvizhevsky, Valery, Reynaud, Serge, Schreiner, Katharina, Simon, Martin, Vasiliev, Sergey, Widmann, Eberhard, Yzombard, Pauline
A low energy particle confined by a horizontal reflective surface and gravity settles in gravitationally bound quantum states. These gravitational quantum states (GQS) were so far only observed with neutrons. However, the existence of GQS is predicte
Externí odkaz:
http://arxiv.org/abs/2407.15443
Autor:
GRAVITY Collaboration, Amorim, A., Bourdarot, G., Brandner, W., Cao, Y., Clénet, Y., Davies, R., de Zeeuw, P. T., Dexter, J., Drescher, A., Eckart, A., Eisenhauer, F., Fabricius, M., Feuchtgruber, H., Schreiber, N. M. Förster, Garcia, P. J. V., Genzel, R., Gillessen, S., Gratadour, D., Hönig, S., Kishimoto, M., Lacour, S., Lutz, D., Millour, F., Netzer, H., Ott, T., Perraut, K., Perrin, G., Peterson, B. M., Petrucci, P. O., Pfuhl, O., Prieto, M. A., Rabien, S., Rouan, D., Santos, D. J., Shangguan, J., Shimizu, T., Sternberg, A., Straubmeier, C., Sturm, E., Tacconi, L. J., Tristram, K. R. W., Widmann, F., Woillez, J.
Publikováno v:
A&A 690, A76 (2024)
We present new VLTI/GRAVITY near-infrared interferometric measurements of the angular size of the innermost hot dust continuum for 14 type 1 AGNs. The angular sizes are resolved on scales of ~0.7 mas and the inferred ring radii range from 0.028 to 1.
Externí odkaz:
http://arxiv.org/abs/2407.13458
Autor:
Amsler, Claude, Breuker, Horst, Bumbar, Marcus, Cerwenka, Matti, Costantini, Giovanni, Ferragut, Rafael, Fleck, Markus, Giammarchi, Marco, Gligorova, Angela, Gosta, Giulia, Hunter, Eric David, Killian, Carina, Kolbinger, Bernadette, Kraxberger, Viktoria, Kuroda, Naofumi, Lackner, Moritz, Leali, Marco, Maero, Giancarlo, Mascagna, Valerio, Matsuda, Yasuyuki, Migliorati, Stefano, Murtagh, Daniel James, Nanda, Amit, Nowak, Lilian, Rheinfrank, Simon, Romé, Massimiliano, Simon, Martin C., Tajima, Minori, Toso, Valerio, Ulmer, Stefan, van Beuzekom, Martin, Venturelli, Luca, Weiser, Alina, Widmann, Eberhard, Yamazaki, Yasunori, Zmeskal, Johann
The mechanism of antiproton-nucleus annihilation at rest is not fully understood, despite substantial previous experimental and theoretical work. In this study we used slow extracted antiprotons from the ASACUSA apparatus at CERN to measure the charg
Externí odkaz:
http://arxiv.org/abs/2407.06721
Autor:
von Fellenberg, Sebastiano D., Witzel, Gunther, Bauboeck, Michi, Chung, Hui-Hsuan, Marchili, Nicola, Martinez, Greg, Sadun-Bordoni, Matteo, Bourdarot, Guillaume, Do, Tuan, Drescher, Antonia, Fazio, Giovanni, Eisenhauer, Frank, Genzel, Reinhard, Gillessen, Stefan, Hora, Joseph L., Mang, Felix, Ott, Thomas, Smith, Howard A., Ros, Eduardo, Ribeiro, Diogo C., Widmann, Felix, Willner, S. P., Zensus, J. Anton
Publikováno v:
A&A 688, L12 (2024)
A systematic study, based on the third-moment structure function, of Sgr A*'s variability finds an exponential rise time $\tau_{1,\rm{obs}}=14.8^{+0.4}_{-1.5}~\mathrm{minutes}$ and decay time $\tau_{2,\rm{obs}}=13.1^{+1.3}_{-1.4}~\mathrm{minutes}$. T
Externí odkaz:
http://arxiv.org/abs/2407.07091