Zobrazeno 1 - 10
of 231
pro vyhledávání: '"van Kerkwijk, M. H."'
Autor:
Andersen, Bridget C., Fonseca, Emmanuel, McKee, J. W., Meyers, B. W., Luo, Jing, Tan, C. M., Stairs, I. H., Kaspi, Victoria M., van Kerkwijk, M. H., Bhardwaj, Mohit, Boyle, P. J., Crowter, Kathryn, Demorest, Paul B., Dong, Fengqui A., Good, Deborah C., Kaczmarek, Jane F., Leung, Calvin, Masui, Kiyoshi W., Naidu, Arun, Ng, Cherry, Patel, Chitrang, Pearlman, Aaron B., Pleunis, Ziggy, Rafiei-Ravandi, Masoud, Rahman, Mubdi, Ransom, Scott M., Smith, Kendrick M., Tendulkar, Shriharsh P.
Publikováno v:
ApJ 943 57 (2023)
Of the more than $3{,}000$ radio pulsars currently known, only ${\sim}300$ are in binary systems, and only five of these consist of young pulsars with massive non-degenerate companions. We present the discovery and initial timing, accomplished using
Externí odkaz:
http://arxiv.org/abs/2209.06895
Autor:
Dhillon, V. S., Kennedy, M. R., Breton, R. P., Clark, C. J., Sánchez, D. Mata, Voisin, G., Breedt, E., Brown, A. J., Dyer, M. J., Green, M. J., Kerry, P., Littlefair, S. P., Marsh, T. R., Parsons, S. G., Pelisoli, I., Sahman, D. I., Wild, J. F., van Kerkwijk, M. H., Stappers, B. W.
We present simultaneous, multi-colour optical light curves of the companion star to the black-widow pulsar PSR J2051-0827, obtained approximately 10 years apart using ULTRACAM and HiPERCAM, respectively. The ULTRACAM light curves confirm the previous
Externí odkaz:
http://arxiv.org/abs/2208.09249
Autor:
Kennedy, M. R., Breton, R. P., Clark, C. J., Mata-Sanchez, D., Voisin, G., Dhillon, V. S., Halpern, J. P., Marsh, T. R., Nieder, L., Ray, P. S., van Kerkwijk, M. H.
Accurate measurements of the masses of neutron stars are necessary to test binary evolution models, and to constrain the neutron star equation of state. In pulsar binaries with no measurable post-Keplerian parameters, this requires an accurate estima
Externí odkaz:
http://arxiv.org/abs/2202.05111
Autor:
Marthi, V. R., Simard, D., Main, R. A., Pen, U. -L., van Kerkwijk, M. H., Vanderlinde, K., Gupta, Y., Roberts, C., Quine, B. M.
We report on the simultaneous Giant Metrewave Radio Telescope (GMRT) and Algonquin Radio Observatory (ARO) observations at 550-750 MHz of the scintillation of PSR B1508+55, resulting in a $\sim$10,000-km baseline. This regime of measurement lies betw
Externí odkaz:
http://arxiv.org/abs/2010.09723
Binaries harbouring millisecond pulsars enable a unique path to determine neutron star masses: radio pulsations reveal the motion of the neutron star, while that of the companion can be characterised through studies in the optical range. PSR J1012+53
Externí odkaz:
http://arxiv.org/abs/2004.02901
The delay time distribution of Type Ia supernovae (the time-dependent rate of supernovae resulting from a burst of star formation) has been measured using different techniques and in different environments. Here, we study in detail the distribution f
Externí odkaz:
http://arxiv.org/abs/1905.00841
Publikováno v:
The Astrophysical Journal, Volume 871, Number 2 (2019, Feb. 5)
How an otherwise inert carbon-oxygen white dwarf can be made to explode as a Type Ia supernova remains unknown. A promising test of theoretical models is to constrain the distribution of material that is left unburned, in particular of carbon. So far
Externí odkaz:
http://arxiv.org/abs/1902.01904
PSR J0636+5128 is a millisecond pulsar in one of the most compact pulsar binaries known, with a 96\,min orbital period. The pulsar mass function suggests a very low-mass companion, similar to that seen in so-called "black widow" binaries. Unlike in m
Externí odkaz:
http://arxiv.org/abs/1807.04610
Autor:
Dhawan, S., Flörs, A., Leibundgut, B., Maguire, K., Kerzendorf, W., Taubenberger, S., Van Kerkwijk, M. H., Spyromilio, J.
Publikováno v:
A&A 619, A102 (2018)
We present near infrared (NIR) spectroscopy of the nearby supernova 2014J obtained $\sim$450 d after explosion. We detect the [Ni II] 1.939 $\mu$m line in the spectra indicating the presence of stable $^{58}$Ni in the ejecta. The stable nickel is not
Externí odkaz:
http://arxiv.org/abs/1805.02420
The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
Autor:
The Astropy Collaboration, Price-Whelan, A. M., Sipőcz, B. M., Günther, H. M., Lim, P. L., Crawford, S. M., Conseil, S., Shupe, D. L., Craig, M. W., Dencheva, N., Ginsburg, A., VanderPlas, J. T., Bradley, L. D., Pérez-Suárez, D., de Val-Borro, M., Aldcroft, T. L., Cruz, K. L., Robitaille, T. P., Tollerud, E. J., Ardelean, C., Babej, T., Bachetti, M., Bakanov, A. V., Bamford, S. P., Barentsen, G., Barmby, P., Baumbach, A., Berry, K. L., Biscani, F., Boquien, M., Bostroem, K. A., Bouma, L. G., Brammer, G. B., Bray, E. M., Breytenbach, H., Buddelmeijer, H., Burke, D. J., Calderone, G., Rodríguez, J. L. Cano, Cara, M., Cardoso, J. V. M., Cheedella, S., Copin, Y., Crichton, D., DÁvella, D., Deil, C., Depagne, É., Dietrich, J. P., Donath, A., Droettboom, M., Earl, N., Erben, T., Fabbro, S., Ferreira, L. A., Finethy, T., Fox, R. T., Garrison, L. H., Gibbons, S. L. J., Goldstein, D. A., Gommers, R., Greco, J. P., Greenfield, P., Groener, A. M., Grollier, F., Hagen, A., Hirst, P., Homeier, D., Horton, A. J., Hosseinzadeh, G., Hu, L., Hunkeler, J. S., Ivezić, Ž., Jain, A., Jenness, T., Kanarek, G., Kendrew, S., Kern, N. S., Kerzendorf, W. E., Khvalko, A., King, J., Kirkby, D., Kulkarni, A. M., Kumar, A., Lee, A., Lenz, D., Littlefair, S. P., Ma, Z., Macleod, D. M., Mastropietro, M., McCully, C., Montagnac, S., Morris, B. M., Mueller, M., Mumford, S. J., Muna, D., Murphy, N. A., Nelson, S., Nguyen, G. H., Ninan, J. P., Nöthe, M., Ogaz, S., Oh, S., Parejko, J. K., Parley, N., Pascual, S., Patil, R., Patil, A. A., Plunkett, A. L., Prochaska, J. X., Rastogi, T., Janga, V. Reddy, Sabater, J., Sakurikar, P., Seifert, M., Sherbert, L. E., Sherwood-Taylor, H., Shih, A. Y., Sick, J., Silbiger, M. T., Singanamalla, S., Singer, L. P., Sladen, P. H., Sooley, K. A., Sornarajah, S., Streicher, O., Teuben, P., Thomas, S. W., Tremblay, G. R., Turner, J. E. H., Terrón, V., van Kerkwijk, M. H., de la Vega, A., Watkins, L. L., Weaver, B. A., Whitmore, J. B., Woillez, J., Zabalza, V.
The Astropy project supports and fosters the development of open-source and openly-developed Python packages that provide commonly-needed functionality to the astronomical community. A key element of the Astropy project is the core package Astropy, w
Externí odkaz:
http://arxiv.org/abs/1801.02634