Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Deneva J"'
Autor:
Deneva, J. S., McLaughlin, M., Olszanski, T. E. E., Lewis, E. F., Pang, D., Freire, P. C. C., Bagchi, M., Stovall, K.
The AO327 drift survey for radio pulsars and transients used the Arecibo telescope from 2010 until its collapse in 2020. AO327 collected ~3100 hours of data at 327 MHz with a time resolution of 82 us and frequency resolution of 24 kHz. While the main
Externí odkaz:
http://arxiv.org/abs/2401.01947
Autor:
Crawford, F., Lazio, T. J. W., McEwen, A., Deneva, J. S., Cordes, J. M., Spitler, L., Trainor, R. F.
We report two low-frequency measurements of the power-law index for the amplitudes of giant radio pulses from the Crab pulsar. The two observations were taken with the Arecibo and Green Bank radio telescopes at center frequencies of 327 MHz and 350 M
Externí odkaz:
http://arxiv.org/abs/2304.02589
Autor:
Clark, C. J., Kerr, M., Barr, E. D., Bhattacharyya, B., Breton, R. P., Bruel, P., Camilo, F., Chen, W., Cognard, I., Cromartie, H. T., Deneva, J., Dhillon, V. S., Guillemot, L., Kennedy, M. R., Kramer, M., Lyne, A. G., Sánchez, D. Mata, Nieder, L., Phillips, C., Ransom, S. M., Ray, P. S., Roberts, M. S. E., Roy, J., Smith, D. A., Spiewak, R., Stappers, B. W., Tabassum, S., Theureau, G., Voisin, G.
Reliable neutron star mass measurements are key to determining the equation-of-state of cold nuclear matter, but these are rare. "Black Widows" and "Redbacks" are compact binaries consisting of millisecond pulsars and semi-degenerate companion stars.
Externí odkaz:
http://arxiv.org/abs/2301.10995
Autor:
Parent, E., Sewalls, H., Freire, P. C. C., Matheny, T., Lyne, A. G., Perera, B. B. P., Cardoso, F., McLaughlin, M. A., Allen, B., Brazier, A., Camilo, F., Chatterjee, S., Cordes, J. M., Crawford, F., Deneva, J. S., Dong, F. A., Ferdman, R. D., Fonseca, E., Hessels, J. W. T., Kaspi, V. M., Knispel, B., van Leeuwen, J., Lynch, R. S., Meyers, B. M., McKee, J. W., Mickaliger, M. B., Patel, C., Ransom, S. M., Rochon, A., Scholz, P., Stairs, I. H., Stappers, B. W., Tan, C. M., Zhu, W. W.
We present new discoveries and results from long-term timing of 72 pulsars discovered in the Arecibo PALFA survey, including precise determination of astrometric and spin parameters, and flux density and scatter broadening measurements at 1.4 GHz. No
Externí odkaz:
http://arxiv.org/abs/2108.02320
Autor:
Hyman, S. D., Frail, D. A., Deneva, J. S., Kassim, N. E., Giacintucci, S., Kooi, J. E., Lazio, T. J. W., Joyner, I., Peters, W. M., Gajjar, V., Siemion, A. P. V.
From an on-going survey of the Galactic bulge, we have discovered a number of compact, steep spectrum radio sources. In this present study we have carried out more detailed observations for two of these sources, located 43 arcmin and 12.7 deg from th
Externí odkaz:
http://arxiv.org/abs/2105.03282
Autor:
Roshi, D. Anish, Aponte, N., Araya, E., Arce, H., Baker, L. A., Baan, W., Becker, T. M., Breakall, J. K., Brown, R. G., Brum, C. G. M., Busch, M., Campbell, D. B., Cohen, T., Cordova, F., Deneva, J. S., Devogele, M., Dolch, T., Fernandez-Rodriguez, F. O., Ghosh, T., Goldsmith, P. F., Gurvits, L. I., Haynes, M., Heiles, C., Hessel, J. W. T., Hickson, D., Isham, B., Kerr, R. B., Kelly, J., Kiriazes, J. J., Lautenbach, J., Lebron, M., Lewandowska, N., Magnani, L., Manoharan, P. K., Margot, J. L., Marshall, S. E., McGilvray, A. K., Mendez, A., Minchin, R., Negron, V., Nolan, M. C., Olmi, L., Paganelli, F., Palliyaguru, N. T., Pantoja, C. A., Paragi, Z., Parshley, S. C., Peek, J. E. G., Perera, B. B. P., Perillat, P., Pinilla-Alonso, N., Quintero, L., Radovan, H., Raizada, S., Robishaw, T., Route, M., Salter, C. J., Santoni, A., Santos, P., Sau, S., Selvaraj, D., Smith, A. J., Sulzer, M., Vaddi, S., Vargas, F., Venditti, F. C. F., Venkataraman, A., Verkouter, H., Virkki, A. K., Vishwas, A., Weinreb, S., Werthimer, D., Wolszczan, A., Zambrano-Marin, L. F.
The Arecibo Observatory (AO) is a multidisciplinary research and education facility that is recognized worldwide as a leading facility in astronomy, planetary, and atmospheric and space sciences. AO's cornerstone research instrument was the 305-m Wil
Externí odkaz:
http://arxiv.org/abs/2103.01367
Autor:
Deneva, J. S., Ray, P. S., Camilo, F., Freire, P. C. C., Cromartie, H. T., Ransom, S. M., Ferrara, E., Kerr, M., Burnett, T. H., Parkinson, P. M. Saz
We present timing solutions for eight binary millisecond pulsars (MSPs) discovered by searching unidentified Fermi-LAT source positions with the 327 MHz receiver of the Arecibo 305-m radio telescope. Five of the pulsars are "spiders" with orbital per
Externí odkaz:
http://arxiv.org/abs/2012.15185
Autor:
Guillot, S., Kerr, M., Ray, P. S., Bogdanov, S., Ransom, S., Deneva, J. S., Arzoumanian, Z., Bult, P., Chakrabarty, D., Gendreau, K. C., Ho, W. C. G., Jaisawal, G. K., Malacaria, C., Miller, M. C., Strohmayer, T. E., Wolff, M. T., Wood, K. S., Webb, N. A., Guillemot, L., Cognard, I., Theureau, G.
Publikováno v:
ApJL, 887, L27 (2019)
NICER observed several rotation-powered millisecond pulsars to search for or confirm the presence of X-ray pulsations. When broad and sine-like, these pulsations may indicate thermal emission from hot polar caps at the magnetic poles on the neutron s
Externí odkaz:
http://arxiv.org/abs/1912.05708
We present optical time-resolved multi-band photometry of the black widow binary millisecond pulsar J2052+1219 using direct-imaging observations with the 2.1m telescope of Observatorio Astronomico Nacional San Pedro Martir, Mexico (OAN-SPM). The obse
Externí odkaz:
http://arxiv.org/abs/1909.00483
Autor:
Parent, E., Kaspi, V. M., Ransom, S. M., Freire, P. C. C., Brazier, A., Camilo, F., Chatterjee, S., Cordes, J. M., Crawford, F., Deneva, J. S., Ferdman, R. D., Hessels, J. W. T., van Leeuwen, J., Lyne, A. G., Madsen, E. C., McLaughlin, M. A., Patel, C., Scholz, P., Stairs, I. H., Stappers, B. W., Zhu, W. W.
We report on eight millisecond pulsars (MSPs) in binary systems discovered with the Arecibo PALFA survey. Phase-coherent timing solutions derived from 2.5 to 5 years of observations carried out at Arecibo and Jodrell Bank observatories are provided.
Externí odkaz:
http://arxiv.org/abs/1908.09926