Zobrazeno 1 - 10
of 4 528
pro vyhledávání: '"NISHIYAMA, S."'
Publikováno v:
A&A 689, A190 (2024)
The presence of young massive stars in the Galactic Centre (GC) raises questions about star formation near the black hole Sagittarius A* (Sgr A*). Additionally, the initial mass function (IMF) in this region appears different from the standard Salpet
Externí odkaz:
http://arxiv.org/abs/2406.04166
The relevance in Physics of non-Hermitian operators with real eigenvalues is being widely recognized not only in quantum mechanics but also in other areas, such as quantum optics, quantum fluid dynamics and quantum field theory. %stochastic processes
Externí odkaz:
http://arxiv.org/abs/2004.07205
Autor:
Hees, A., Do, T., Roberts, B. M., Ghez, A. M., Nishiyama, S., Bentley, R. O., Gautam, A. K., Jia, S., Kara, T., Lu, J. R., Saida, H., Sakai, S., Takahashi, M., Takamori, Y.
Publikováno v:
Phys. Rev. Letters 124, 081101, 2020
Searching for space-time variations of the constants of Nature is a promising way to search for new physics beyond General Relativity and the standard model motivated by unification theories and models of dark matter and dark energy. We propose a new
Externí odkaz:
http://arxiv.org/abs/2002.11567
Autor:
Nogueras-Lara, F., Schödel, R., Gallego-Calvente, A. T., Gallego-Cano, E., Shahzamanian, B., Dong, H., Neumayer, N., Hilker, M., Najarro, F., Nishiyama, S., Feldmeier-Krause, A., Girard, J. H. V., Cassisi, S.
Publikováno v:
Nature Astronomy, Volume 4, p. 377-381(2020)
The nuclear disc is a dense stellar structure at the centre of the Milky Way, with a radius of $\sim$150 pc. It has been a place of intense star formation in the past several tens of millions of years but its overall formation history has remained un
Externí odkaz:
http://arxiv.org/abs/1910.06968
Autor:
Nogueras-Lara, F., Schödel, R., Dong, H., Najarro, F., Gallego-Calvente, A. T., Hilker, M., Gallego-Cano, E., Nishiyama, S., Neumayer, N., Feldmeier-Krause, A., Girard, J. H. V., Cassisi, S., Pietrinferni, A.
Publikováno v:
A&A 620, A83 (2018)
The study of the inner region of the Milky Way's bulge is hampered by high interstellar extinction and extreme source crowding. Sensitive high angular resolution near-infrared imaging is needed to study stellar populations in such a complex environme
Externí odkaz:
http://arxiv.org/abs/1809.07627
Autor:
Markakis, K., Eckart, A., Castro, N., Sánchez-Monge, Á., Labadie, L., Nishiyama, S., Britzen, S., Zensus, J. A.
We present the analysis of near infrared (NIR), adaptive optics (AO) Subaru and archived HST imaging data of a region near the northern middle lobe (NML) of the Centaurus A (Cen A) jet, at a distance of $\sim15$ kpc north-east (NE) from the center of
Externí odkaz:
http://arxiv.org/abs/1710.05770
Autor:
Eswaraiah, C., Lai, Shih-Ping, Chen, Wen-Ping, Pandey, A. K., Tamura, M., Maheswar, G., Sharma, S., Wang, Jia-Wei, Nishiyama, S., Nakajima, Y., Kwon, Jungmi, Purcell, R., Magalhães, A. M.
The influence of magnetic fields (B-fields) in the formation and evolution of bipolar bubbles, due to the expanding ionization fronts (I-fronts) driven by the Hii regions that are formed and embedded in filamentary molecular clouds, has not been well
Externí odkaz:
http://arxiv.org/abs/1710.01185
Autor:
Nogueras-Lara, F., Gallego-Calvente, A. T., Dong, H., Gallego-Cano, E., Girard, J. H. V., Hilker, M., de Zeeuw, P. T., Feldmeier-Krause, A., Nishiyama, S., Najarro, F., Schödel, R.
Publikováno v:
A&A 610, A83 (2018)
The Galactic Centre is of fundamental astrophysical interest, but existing near-infrared surveys fall short to cover it adequately. We introduce the GALACTICNUCLEUS survey, a $JHK_s$ imaging survey of the centre of the Milky Way with a $0.2"$ angular
Externí odkaz:
http://arxiv.org/abs/1709.09094
Autor:
Aydi, E., Mróz, P., Whitelock, P. A., Mohamed, S., Wyrzykowski, Ł., Udalski, A., Vaisanen, P., Nagayama, T., Dominik, M., Scholz, A., Onozato, H., Williams, R. E., Hodgkin, S. T., Nishiyama, S., Yamagishi, M., Smith, A. M. S., Ryu, T., Iwamatsu, A., Kawamata, I.
We report spectroscopic and photometric follow-up of the peculiar nova V5852~Sgr (discovered as OGLE-2015-NOVA-01), which exhibits a combination of features from different nova classes. The photometry shows a flat-topped light curve with quasi-period
Externí odkaz:
http://arxiv.org/abs/1606.02755
Autor:
Markakis, K., Dierkes, J., Eckart, A., Nishiyama, S., Britzen, S., García-Marín, M., Horrobin, M., Muxlow, T., Zensus, J. A.
Publikováno v:
A&A 580, A11 (2015)
NGC3718 is a LINER $L1.9$ galaxy, lying at a distance of about $\sim 17.4$ Mpc away from earth and its similarities with NGC5128 often award it the name "northern Centaurus A". We use high angular resolution ($\sim100$ mas) e-Merlin radio and SUBARU
Externí odkaz:
http://arxiv.org/abs/1504.03691