Zobrazeno 1 - 10
of 688
pro vyhledávání: '"P, Perger"'
Autor:
Barnes, J. R., Jeffers, S. V., Haswell, C. A., Damasso, M., Del Sordo, F., Liebing, F., Perger, M., Anglada-Escudé, G.
The radial velocity (RV) method of exoplanet detection requires mitigation of nuisance signals arising from stellar activity. Using analytic cool and facular spot models, we explore the use of central line moments (CLMs) for recovering and monitoring
Externí odkaz:
http://arxiv.org/abs/2409.10306
Autor:
Pallichadath, Vidhya, Dirkx, Dominic, Fayolle, Marie S., Frey, Sandor, Gurvits, Leonid I., Boven, Paul, Cimo, Giuseppe, Fogasy, Judit, Calves, Guifre Molera, Perger, Krisztina, Said, N. Masdiana Md, Vermeersen, Bert L. A.
We present an overview of the operations and engineering interface for Planetary Radio Interferometry and Doppler Experiment (PRIDE) radio astronomy observations as a scientific component of the ESA s Jupiter Icy Moons Explorer (JUICE) mission, as we
Externí odkaz:
http://arxiv.org/abs/2408.14965
Autor:
Frey, Sándor, Fogasy, Judit, Perger, Krisztina, Kulish, Kateryna, Benke, Petra, Koller, Dávid, Gabányi, Krisztina Éva
Publikováno v:
Universe, Vol. 10, No. 2, id. 97 (2024)
The prominent radio quasar PKS 2215+020 (J2217+0220) was once labelled as a new laboratory for core--jet physics at redshift z=3.572 because of its exceptionally extended jet structure traceable with very long baseline interferometric (VLBI) observat
Externí odkaz:
http://arxiv.org/abs/2402.10722
Autor:
Krezinger, Mate, Frey, Sandor, Perger, Krisztina, Gabanyi, Krisztina E., An, Tao, Zhang, Yingkang, Gurvits, Leonid I., Titov, Oleg, Melnikov, Alexey, Paragi, Zsolt
There is still a limited number of high-redshift ($z>3$) active galactic nuclei (AGN) whose jet kinematics have been studied with very long baseline interferometry (VLBI). Without a dedicated proper motion survey, regularly conducted astrometric VLBI
Externí odkaz:
http://arxiv.org/abs/2402.09908
Autor:
Frey, S., Zhang, Y., Perger, K., An, T., Gabányi, K. É., Gurvits, L. I., Hwang, C. -Y., Koptelova, E., Paragi, Z., Fogasy, J.
Publikováno v:
Astronomy and Astrophysics, Vol. 681, L12 (2024)
The existence of accreting supermassive black holes up to billions of solar masses at early cosmological epochs (in the context of this work, redshifts z>=6) requires very fast growth rates which is challenging to explain. The presence of a relativis
Externí odkaz:
http://arxiv.org/abs/2312.15765
Autor:
Gurvits, Leonid I., Cimo, Giuseppe, Dirkx, Dominic, Pallichadath, Vidhya, Akins, Alexander, Altobelli, Nicolas, Bocanegra-Bahamon, Tatiana M., Cazaux, Stephanie M., Charlot, Patrick, Duev, Dmitry A., Fayolle, Marie S., Fogasy, Judit, Frey, Sandor, Lainey, Valery, Calves, Guifre Molera, Perger, Krisztina, Pogrebenko, Sergey V., Said, N. Masdiana Md, Vallat, Claire, Vermeersen, Bert L. A., Visser, Pieter N. A. M., Wang, Kuo-Nung, Willner, Konrad
Planetary Radio Interferometry and Doppler Experiment (PRIDE) is a multi-purpose experimental technique aimed at enhancing the science return of planetary missions. The technique exploits the science payload and spacecraft service systems without req
Externí odkaz:
http://arxiv.org/abs/2311.04376
Using empty-field `Quick Look' images from the first two epochs of the VLA Sky Survey (VLASS) observations, centred on the positions of $\sim3700$ individually radio-non-detected active galactic nuclei (AGNs) at $z\ge4$, we performed image stacking a
Externí odkaz:
http://arxiv.org/abs/2311.01128
Autor:
González-Álvarez, E., Kemmer, J., Chaturvedi, P., Caballero, J. A., Quirrenbach, A., Amado, P. J., Béjar, V. J. S., Cifuentes, C., Herrero, E., Kossakowski, D., Reiners, A., Ribas, I., Rodríguez, E., Rodríguez-López, C., Sanz-Forcada, J., Shan, Y., Stock, S., Tabernero, H. M., Tal-Or, L., Osorio, M. R. Zapatero, Hatzes, A. P., Henning, Th., López-González, M. J., Montes, D., Morales, J. C., Pallé, E., Pedraz, S., Perger, M., Reffert, S., Sabotta, S., Schweitzer, A., Zechmeister, M.
Publikováno v:
A&A 675, A141 (2023)
We report the discovery of HN Lib b, a sub-Neptunian mass planet orbiting the nearby ($d \approx$ = 6.25 pc) M4.0 V star HN Lib detected by our CARMENES radial-velocity (RV) survey. We determined a planetary minimum mass of $M_\text{b}\sin i = $ 5.46
Externí odkaz:
http://arxiv.org/abs/2305.19677
Publikováno v:
Astrophysics and Space Science, Vol. 368, id. 18 (2023)
The radio quasar NVSS J141922$-$083830 (J1419$-$0838) was initially classified as an uncategorised blazar-type object, following its detection in the $\gamma$-ray band with the Fermi space telescope. Later, using multi-waveband observations and model
Externí odkaz:
http://arxiv.org/abs/2303.09263
Autor:
Ribas, I., Reiners, A., Zechmeister, M., Caballero, J. A., Morales, J. C., Sabotta, S., Baroch, D., Amado, P. J., Quirrenbach, A., Abril, M., Aceituno, J., Anglada-Escudé, G., Azzaro, M., Barrado, D., Béjar, V. J. S., de Haro, D. Benítez, Bergond, G., Bluhm, P., Ortega, R. Calvo, Guillén, C. Cardona, Chaturvedi, P., Cifuentes, C., Colomé, J., Cont, D., Cortés-Contreras, M., Czesla, S., Díez-Alonso, E., Dreizler, S., Duque-Arribas, C., Espinoza, N., Fernández, M., Fuhrmeister, B., Galadí-Enríquez, D., García-López, A., González-Álvarez, E., Hernández, J. I. González, Guenther, E. W., de Guindos, E., Hatzes, A. P., Henning, Th., Herrero, E., Hintz, D., Huelmo, Á. L., Jeffers, S. V., Johnson, E. N., de Juan, E., Kaminski, A., Kemmer, J., Khaimova, J., Khalafinejad, S., Kossakowski, D., Kürster, M., Labarga, F., Lafarga, M., Lalitha, S., Lampón, M., Lillo-Box, J., Lodieu, N., González, M. J. López, López-Puertas, M., Luque, R., Magán, H., Mancini, L., Marfil, E., Martín, E. L., Martín-Ruiz, S., Molaverdikhani, K., Montes, D., Nagel, E., Nortmann, L., Nowak, G., Pallé, E., Passegger, V. M., Pavlov, A., Pedraz, S., Perdelwitz, V., Perger, M., Ramón-Ballesta, A., Reffert, S., Revilla, D., Rodríguez, E., Rodríguez-López, C., Sadegi, S., Carrasco, M. Á. Sánchez, Sánchez-López, A., Sanz-Forcada, J., Schäfer, S., Schlecker, M., Schmitt, J. H. M. M., Schöfer, P., Schweitzer, A., Seifert, W., Shan, Y., Skrzypinski, S. L., Solano, E., Stahl, O., Stangret, M., Stock, S., Stürmer, J., Tabernero, H. M., Tal-Or, L., Trifonov, T., Vanaverbeke, S., Yan, F., Osorio, M. R. Zapatero
The CARMENES instrument was conceived to deliver high-accuracy radial velocity (RV) measurements with long-term stability to search for temperate rocky planets around a sample of nearby cool stars. The broad wavelength coverage was designed to provid
Externí odkaz:
http://arxiv.org/abs/2302.10528