Zobrazeno 1 - 10
of 2 516
pro vyhledávání: '"Smith Howard"'
Autor:
Hora, Joseph L., Trilling, David E., Lopez-Oquendo, Andy J., Smith, Howard A., Mommert, Michael, Moskovitz, Nicholas, Foster, Chris, Connelley, Michael S., Lockhart, Charles, Rayner, John T., Bus, Schelte J., Watanabe, Darryl, Bergknut, Lars, Bonnet, Morgan, Tokunaga, Alan
We describe the new design and current performance of the Mid-InfraRed Spectrometer and Imager (MIRSI) on the NASA Infrared Telescope Facility (IRTF). The system has been converted from a liquid nitrogen/liquid helium cryogen system to one that uses
Externí odkaz:
http://arxiv.org/abs/2409.02752
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
Autor:
Michail, Joseph M., Yusef-Zadeh, Farhad, Wardle, Mark, Kunneriath, Devaky, Hora, Joseph L., Bushouse, Howard, Fazio, Giovanni G., Markoff, Sera, Smith, Howard A.
We report on the final two days of a multiwavelength campaign of Sgr A* observing in the radio, submillimeter, infrared, and X-ray bands in July 2019. Sgr A* was remarkably active, showing multiple flaring events across the electromagnetic spectrum.
Externí odkaz:
http://arxiv.org/abs/2406.01671
Autor:
Ginsburg, Adam, Bally, John, Barnes, Ashley T., Battersby, Cara, Budaiev, Nazar, Butterfield, Natalie O., Caselli, Paola, Colzi, Laura, Dutkowska, Katarzyna M., García, Pablo, Gramze, Savannah, Henshaw, Jonathan D., Hu, Yue, Jeff, Desmond, Jiménez-Serra, Izaskun, Kauffmann, Jens, Klessen, Ralf S., Levesque, Emily M., Longmore, Steven N., Lu, Xing, Mills, Elisabeth A. C., Morris, Mark R., Nogueras-Lara, Francisco, Oka, Tomoharu, Pineda, Jaime E., Pillai, Thushara G. S., Rivilla, Víctor M., Sánchez-Monge, Álvaro, Santa-Maria, Miriam G., Smith, Howard A., Sofue, Yoshiaki, Sormani, Mattia C., Tremblay, Grant R., Vermariën, Gijs, Vikhlinin, Alexey, Viti, Serena, Walker, Dan, Wang, Q. Daniel, Xu, Fengwei, Zhang, Qizhou
A compact source, G0.02467-0.0727, was detected in ALMA \threemm observations in continuum and very broad line emission. The continuum emission has a spectral index $\alpha\approx3.3$, suggesting that the emission is from dust. The line emission is d
Externí odkaz:
http://arxiv.org/abs/2404.07808