Zobrazeno 61 - 70
of 11 484
pro vyhledávání: '"Katz J"'
Autor:
Katz, J. I., Wang, S.
Flyby images of (486958) Arrokoth (Ultima Thule, 2014 MU$_{69}$) show a comparatively bright "necklace" in the neck, or cleft between its two lobes, in contrast to its generally low albedo. We suggest that the necklace may be the result of thermally
Externí odkaz:
http://arxiv.org/abs/1902.00997
Autor:
Katz, J. I.
Repeating and apparently non-repeating fast radio bursts (FRB) differ by orders of magnitude in duty factors, energy and rotation measure. Extensive monitoring of apparently non-repeating FRB has failed to find any repetitions. This suggests the two
Externí odkaz:
http://arxiv.org/abs/1811.10755
Autor:
Chen, L. E., Bott, A. F. A., Tzeferacos, P., Rigby, A., Bell, A., Bingham, R., Graziani, C., Katz, J., Koenig, M., Li, C. K., Petrasso, R., Park, H. -S., Ross, J. S., Ryu, D., White, T. G., Reville, B., Matthews, J., Meinecke, J., Miniati, F., Zweibel, E. G., Sarkar, S., Schekochihin, A. A., Lamb, D. Q., Froula, D. H., Gregori, G.
Publikováno v:
Astrophys. J. 892:114, 2020
Identifying the sources of the highest energy cosmic rays requires understanding how they are deflected by the stochastic, spatially intermittent intergalactic magnetic field. Here we report measurements of energetic charged-particle propagation thro
Externí odkaz:
http://arxiv.org/abs/1808.04430
Akademický článek
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Akademický článek
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Autor:
Katz, J. I.
More than a decade after their discovery, astronomical Fast Radio Bursts remain enigmatic. They are known to occur at "cosmological" distances, implying large energy and radiated power, extraordinarily high brightness and coherent emission. Yet their
Externí odkaz:
http://arxiv.org/abs/1804.09092
Autor:
Katz, J. I.
Curvature radiation is a natural candidate for the emission mechanism of FRB. However, FRB spectra have structure with $\Delta \nu/\nu \sim \text{0.03--0.2}$, inconsistent with the very smooth spectrum of curvature radiation. Although this spectral s
Externí odkaz:
http://arxiv.org/abs/1803.01938
Autor:
Katz, J. I.
The recently discovered first interstellar object 1I/2017 U1 (`Oumuamua) has brightness that varies by a factor of 10, a range greater than that of any Solar System asteroid, a spectrum characteristic of Type D asteroids, and no evidence of evaporati
Externí odkaz:
http://arxiv.org/abs/1802.02273
Autor:
Katz, J. I.
The repeating FRB 121102 emitted a pair of discrete bursts separated by 37 ms and another pair, 131 days later, separated by 34 ms, during observations that detected FRB at a mean rate of $2 \times 10^{-4}$/s. Here I assume that these events are sepa
Externí odkaz:
http://arxiv.org/abs/1708.07234
Autor:
Finkel, J. M., Katz, J. I.
We use the Global Historical Climatology Network--daily database to calculate a nonparametric statistic that describes the rate at which all-time daily high and low temperature records have been set in nine geographic regions (continents or major por
Externí odkaz:
http://arxiv.org/abs/1708.04581