Zobrazeno 1 - 10
of 30 901
pro vyhledávání: '"and Smith, D."'
Autor:
Ruz, J., Todarello, E., Vogel, J. K., Giannotti, M., Grefenstette, B., Hudson, H. S., Hannah, I. G., Irastorza, I. G., Kim, C. S., O'Shea, T., Regis, M., Smith, D. M., Taoso, M., Bueno, J. Trujillo
The nature of dark matter in the Universe is still an open question in astrophysics and cosmology. Axions and axion-like particles (ALPs) offer a compelling solution, and traditionally ground-based experiments have eagerly, but to date unsuccessfully
Externí odkaz:
http://arxiv.org/abs/2407.03828
Autor:
Bichang'a, B., Kaviraj, S., Lazar, I., Jackson, R. A., Das, S., Smith, D. J. B., Watkins, A. E., Martin, G.
Given their dominance of the galaxy number density, dwarf galaxies are central to our understanding of galaxy formation. While the incidence of AGN and their impact on galaxy evolution has been extensively studied in massive galaxies, much less is kn
Externí odkaz:
http://arxiv.org/abs/2406.11962
Autor:
Ali, S., Allison, P., Archambault, S., Beatty, J. J., Besson, D. Z., Bishop, A., Chen, P., Chen, Y. C., Clark, B. A., Clay, W., Connolly, A., Couberly, K., Cremonesi, L., Cummings, A., Dasgupta, P., Debolt, R., de Kockere, S., de Vries, K. D., Deaconu, C., DuVernois, M. A., Flaherty, J., Friedman, E., Gaior, R., Giri, P., Hanson, J., Harty, N., Hoffman, K. D., Huang, J. J., Huang, M. -H., Hughes, K., Ishihara, A., Karle, A., Kelley, J. L., Kim, K. -C., Kim, M. -C., Kravchenko, I., Krebs, R., Kuo, C. Y., Kurusu, K., Latif, U. A., Liu, C. H, Liu, T. C., Luszczak, W., Mase, K., Muzio, M. S., Nam, J., Nichol, R. J., Novikov, A., Nozdrina, A., Oberla, E., Pan, Y., Pfendner, C., Punsuebsay, N., Roth, J., Salcedo-Gomez, A., Seckel, D., Seikh, M. F. H., Shaio, Y. -S., Smith, D., Toscano, S., Torres, J., Touart, J., van Eijndhoven, N., Vieregg, A., Wang, M. -Z., Wang, S. -H., Wissel, S. A., Xie, C., Yoshida, S., Young, R.
We develop an in-situ index of refraction profile using the transit time of radio signals broadcast from an englacial transmitter to 2-5 km distant radio-frequency receivers, deployed at depths up to 200 m. Maxwell's equations generally admit two ray
Externí odkaz:
http://arxiv.org/abs/2406.00857
Autor:
Robertson, C., Holwerda, B., Young, J., Keel, W., Berkheimer, J., Cook, K., Conselice, C., Frye, B., Grogin, N., Koekemoer, A., Nasr, C., Patel, D., Roemer, W., Smith, D., Windhorst, R.
The Balmer decrement (H$\alpha$/H$\beta$) provides a constraint on attenuation, the cumulative effects of dust grains in the ISM. The ratio is a reliable spectroscopic tool for deriving the dust properties of galaxies that determine many different qu
Externí odkaz:
http://arxiv.org/abs/2403.15619
Autor:
Yue, B. -H., Best, P. N., Duncan, K. J., Calistro-Rivera, G., Morabito, L. K., Petley, J. W., Prandoni, I., Röttgering, H. J. A., Smith, D. J. B.
Studies show that both radio jets from the active galactic nuclei (AGN) and the star formation (SF) activity in quasar host galaxies contribute to the quasar radio emission; yet their relative contributions across the population remain unclear. Here,
Externí odkaz:
http://arxiv.org/abs/2403.07074
Autor:
Hou, X., Zhang, W., Freire, P. C. C., Torres, D. F., Ballet, J., Smith, D. A., Johnson, T. J., Kerr, M., Cheung, C. C., Guillemot, L., Li, J., Zhang, L., Ridolfi, A., Wang, P., Li, D., Yuan, J., Wang, N.
We analyzed the globular cluster M5 (NGC 5904) using 15 years of gamma-ray data from the Fermi Large Area Telescope (LAT). Using rotation ephemerides generated from Arecibo and FAST radio telescope observations, we searched for gamma-ray pulsations f
Externí odkaz:
http://arxiv.org/abs/2401.08231
This paper introduces and tests an unsupervised method for detecting novel coordinated inauthentic information operations (CIOs) in realistic settings. This method uses Bayesian inference to identify groups of accounts that share similar account-leve
Externí odkaz:
http://arxiv.org/abs/2401.06205
Autor:
Rivera, G. Calistro, Alexander, D. M., Harrison, C. M., Fawcett, V. A., Best, P. N., Williams, W. L., Hardcastle, M. J., Rosario, D. J., Smith, D. J. B., Arnaudova, M. I., Escott, E., Gürkan, G., Kondapally, R., Miley, G., Morabito, L. K., Petley, J., Prandoni, I., Röttgering, H. J. A., Yue, B. -H.
We present a comprehensive study of the physical origin of radio emission in optical quasars at redshifts z < 2.5. We focus particularly on the associations between compact radio emission, dust reddening, and outflows identified in our earlier work.
Externí odkaz:
http://arxiv.org/abs/2312.10177
Autor:
Whittam, I. H., Prescott, M., Hale, C. L., Jarvis, M . J., Heywood, I., An, Fangxia, Glowacki, M., Maddox, N., Marchetti, L., Morabito, L. K., Adams, N. J., Bowler, R. A. A., Hatfield, P. W., Varadaraj, R. G., Collier, J., Frank, B., Taylor, A. R., Santos, M. G., Vaccari, M., Afonso, J., Ao, Y., Delhaize, J., Knowles, K., Kolwa, S., Randriamampandry, S. M., Randriamanakoto, Z., Smirnov, O., Smith, D. J. B., White, S. V.
In this paper we combine the Early Science radio continuum data from the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) Survey, with optical and near-infrared data and release the cross-matched catalogues. The radio data used in
Externí odkaz:
http://arxiv.org/abs/2310.17409
We investigate how the recovery of galaxy star formation rates (SFRs) using energy-balance spectral energy distribution (SED) fitting codes depends on their recent star formation histories (SFHs). We use the Magphys and Prospector codes to fit 6,706
Externí odkaz:
http://arxiv.org/abs/2310.16097