Zobrazeno 1 - 10
of 15 754
pro vyhledávání: '"Plotkin, A"'
Indirect reciprocity is a plausible mechanism for sustaining cooperation: people cooperate with those who have a good reputation, which can be acquired by helping others. However, this mechanism requires the population to agree on who has good or bad
Externí odkaz:
http://arxiv.org/abs/2408.11199
Autor:
Chen, Ying, Luo, Bin, Brandt, W. N., Zuo, Wenwen, Dix, Cooper, Ha, Trung, Matthews, Brandon, Paul, Jeremiah D., Plotkin, Richard M., Shemmer, Ohad
We present near-infrared spectroscopy of ten weak emission-line quasars (WLQs) at redshifts of $z\sim2$, obtained with the Palomar 200-inch Hale Telescope. WLQs are an exceptional population of type 1 quasars that exhibit weak or no broad emission li
Externí odkaz:
http://arxiv.org/abs/2407.03422
Autor:
Gandhi, P., Borowski, E. S., Byrom, J., Hynes, R. I., Maccarone, T. J., Shaw, A. W., Adegoke, O. K., Altamirano, D., Baglio, M. C., Bhargava, Y., Britt, C. T., Buckley, D. A. H., Buisson, D. J. K., Casella, P., Segura, N. Castro, Charles, P. A., Corral-Santana, J. M., Dhillon, V. S., Fender, R., Gúrpide, A., Heinke, C. O., Igl, A. B., Knigge, C., Markoff, S., Mastroserio, G., McCollough, M. L., Middleton, M., Miller, J. M., Miller-Jones, J. C. A., Motta, S. E., Paice, J. A., Pawar, D. D., Plotkin, R. M., Pradhan, P., Ressler, M. E., Russell, D. M., Russell, T. D., Santos-Sanz, P., Shahbaz, T., Sivakoff, G. R., Steeghs, D., Tetarenko, A. J., Tomsick, J. A., Vincentelli, F. M., George, M., Gurwell, M., Rao, R.
We present mid-infrared (MIR) spectral-timing measurements of the prototypical Galactic microquasar GRS 1915+105. The source was observed with the Mid-Infrared Instrument (MIRI) onboard JWST in June 2023 at a MIR luminosity L(MIR)~10^{36} erg/s excee
Externí odkaz:
http://arxiv.org/abs/2406.18637
We introduce a mathematical model that combines the concepts of complex contagion with payoff-biased imitation, to describe how social behaviors spread through a population. Traditional models of social learning by imitation are based on simple conta
Externí odkaz:
http://arxiv.org/abs/2406.14922
Autor:
Ahmed, Harum, Shemmer, Ohad, Matthews, Brandon, Dix, Cooper, Ha, Trung, Richards, Gordon T., Brotherton, Michael S., Myers, Adam D., Brandt, W. N., Gallagher, Sarah C., Green, Richard, Lira, Paulina, McLane, Jacob N., Plotkin, Richard M., Schneider, Donald P.
We present the rest-frame ultraviolet-optical spectral properties of 65 broad absorption line (BAL) quasars from the Gemini Near Infrared Spectrograph-Distant Quasar Survey (GNIRS-DQS). These properties are compared with those of 195 non-BAL quasars
Externí odkaz:
http://arxiv.org/abs/2404.12343
Previous research has shown how indirect reciprocity can promote cooperation through evolutionary game theoretic models. Most work in this field assumes a separation of time-scales: individuals' reputations equilibrate at a fast time scale for given
Externí odkaz:
http://arxiv.org/abs/2404.10121
Autor:
Paul, Jeremiah D., Plotkin, Richard M., Brandt, W. N., Ellis, Christopher H., Gallo, Elena, Greene, Jenny E., Ho, Luis C., Kimball, Amy E., Haggard, Daryl
Publikováno v:
ApJ 974 66 (2024)
The supermassive black holes ($M_{\rm BH} \sim 10^{6}$$-$$10^{10}~M_\odot$) that power luminous active galactic nuclei (AGNs), i.e., quasars, generally show a correlation between thermal disk emission in the ultraviolet (UV) and coronal emission in h
Externí odkaz:
http://arxiv.org/abs/2404.02423
We study Polynomial Lawvere logic PL, a logic defined over the Lawvere quantale of extended positive reals with sum as tensor, to which we add multiplication, thereby obtaining a semiring structure. PL is designed for complex quantitative reasoning,
Externí odkaz:
http://arxiv.org/abs/2402.03543
Social reputations facilitate cooperation: those who help others gain a good reputation, making them more likely to receive help themselves. But when people hold private views of one another, this cycle of indirect reciprocity breaks down, as disagre
Externí odkaz:
http://arxiv.org/abs/2312.10821
Autor:
Gallo, Elena, Hodges-Kluck, Edmund, Treu, Tommaso, Baldassare, Vivienne, Seth, Anil, Greene, Jenny, Pacucci, Fabio, Plotkin, Richard, Reines, Amy, Wilkes, Belinda
The fraction of local dwarf galaxies that hosts massive black holes is arguably the cleanest diagnostic of the dominant seed formation mechanism of today's supermassive black holes. A 5 per cent constraint on this quantity can be achieved with AXIS o
Externí odkaz:
http://arxiv.org/abs/2311.09161