Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Horiuchi, Shinji"'
Autor:
Pineda, Jorge L., Horiuchi, Shinji, Anderson, L. D., Luisi, Matteo, Langer, William D., Goldsmith, Paul F., Kuiper, Thomas B. H., Fischer, Christian, Gong, Yan, Brunthaler, Andreas, Rugel, Michael, Menten, Karl M.
We combine a new Galactic plane survey of Hydrogen Radio Recombination Lines (RRLs) with far-infrared (FIR) surveys of ionized Nitrogen, N+, to determine Nitrogen abundance across Galactic radius. RRLs were observed with NASA DSS-43 70m antenna and t
Externí odkaz:
http://arxiv.org/abs/2407.12919
Autor:
Benke, Petra, Rösch, Florian, Ros, Eduardo, Kadler, Matthias, Ojha, Roopesh, Edwards, Philip G., Horiuchi, Shinji, Hyland, Lucas J., Phillips, Chris, Quick, Jonathan F. H., Stevens, Jamie, Tzioumis, Anastasios K., Weston, Stuart
Publikováno v:
A&A 681, A69 (2024)
With the emergence of very high energy astronomy (VHE; E>100 GeV), new open questions were presented to astronomers studying the multi-wavelength emission from blazars. Answers to these open questions, such as the Doppler crisis, and finding the loca
Externí odkaz:
http://arxiv.org/abs/2310.10206
Autor:
Bietenholz, Michael F., Bartel, Norbert, Dwarkadas, Vikram V., Mtshweni, Leon, Orquera-Rojas, Carlos, Ellingsen, Simon, Horiuchi, Shinji, Tzioumis, Anastasios
We present broadband radio flux-density measurements supernova (SN) 1996cr, made with MeerKAT, ATCA and ALMA, and images made from very long baseline interferometry (VLBI) observations with the Australian Long Baseline Array. The spectral energy dist
Externí odkaz:
http://arxiv.org/abs/2210.16895
We present the results of second epoch ALMA observations of 321 GHz H$_2$O emission toward two nearby active galactic nuclei, NGC 4945 and the Circinus galaxy, together with Tidbinbilla 70-m monitoring of their 22 GHz H$_2$O masers. The two epoch ALM
Externí odkaz:
http://arxiv.org/abs/2111.01107
Autor:
Imanishi, Masatoshi, Hagiwara, Yoshiaki, Horiuchi, Shinji, Izumi, Takuma, Nakanishi, Kouichiro
We present the results of ALMA band-5 (~170 GHz) observations of the merging ultraluminous infrared galaxy, the "Superantennae" (IRAS 19254-7245) at z=0.0617, which has been diagnosed as containing a luminous obscured active galactic nucleus (AGN). I
Externí odkaz:
http://arxiv.org/abs/2101.05296
Autor:
Horiuchi, Shinji, Molyneux, Blake, Stevens, Jamie B., Baines, Graham, Benson, Craig, Abu-Shaban, Zohair, Giorgini, Jon D., Benner, Lance A. M., Naidu, Shantanu P., Phillips, Chris J., Edwards, Philip G., Kruzins, Ed, Stacy, Nick J. S., Slade, Martin A., Reynolds, John E., Lazio, Joseph
We report results of Canberra-ATCA Doppler-only continuous wave (CW) radar observations of near-Earth asteroid (163899) 2003 SD220 at a receiving frequency of 7159 MHz (4.19 cm) on 2018 December 20, 21, and 22 during its close approach within 0.019 a
Externí odkaz:
http://arxiv.org/abs/2012.02519
Autor:
Virkler, Kristen, Kocz, Jonathon, Soriano, Melissa, Horiuchi, Shinji, Pineda, Jorge L., McNichols, Tyrone
The Deep Space Network (DSN) enables NASA to communicate with its spacecraft in deep space. By virtue of its large antennas, the DSN can also be used as a powerful instrument for radio astronomy. Specifically, Deep Space Station (DSS) 43, the 70 m an
Externí odkaz:
http://arxiv.org/abs/2010.02235
Autor:
Pearlman, Aaron B., Majid, Walid A., Prince, Thomas A., Ray, Paul S., Kocz, Jonathon, Horiuchi, Shinji, Naudet, Charles J., Güver, Tolga, Enoto, Teruaki, Arzoumanian, Zaven, Gendreau, Keith C., Ho, Wynn C. G.
Magnetars are young, rotating neutron stars that possess larger magnetic fields ($B$ $\approx$ $10^{13}$-$10^{15}$ G) and longer rotational periods ($P$ $\approx$ 1-12 s) than ordinary pulsars. In contrast to rotation-powered pulsars, magnetar emissi
Externí odkaz:
http://arxiv.org/abs/2005.08410
Autor:
Majid, Walid A., Pearlman, Aaron B., Nimmo, Kenzie, Hessels, Jason W. T., Prince, Thomas A., Naudet, Charles J., Kocz, Jonathon, Horiuchi, Shinji
Publikováno v:
ApJL 897, L4 (2020)
The spectra of repeating fast radio bursts (FRBs) are complex and time-variable, sometimes peaking within the observing band and showing a fractional emission bandwidth of about 10-30%. These spectral features may provide insight into the emission me
Externí odkaz:
http://arxiv.org/abs/2004.06845
Autor:
Pineda, Jorge L., Horiuchi, Shinji, Anderson, L. D., Luisi, Matteo, Goldsmith, Paul F., Langer, William D., Kuiper, Thomas B. H., Bryden, Geoff, Soriano, Melissa, Lazio, Joseph W.
We present a method for deriving the electron density of ionized gas using the ratio of the intensity of the [NII] 205um line to that of Hydrogen radio recombination lines (RRL). We use this method to derive electron densities of 21 velocity componen
Externí odkaz:
http://arxiv.org/abs/1905.06935