Results 71 to 80 of about 24,425 (256)

Long-term observations of the pulsars in 47 Tucanae. I. A study of four elusive binary systems [PDF]

, 2016
For the past couple of decades, the Parkes radio telescope has been regularly observing the millisecond pulsars in 47 Tucanae (47 Tuc). This long-term timing program was designed to address a wide range of scientific issues related to these pulsars and ...
Bassa, C. G., Berg, M. van den, Camilo, F., D'Amico, N., Freire, P., Heinke, C. O., Jordan, C., Kramer, M., Lorimer, D., Lyne, A., Manchester, R. N., Ridolfi, A., Sarkissian, J., Torne, P.   +13 more
core   +3 more sources

Searching for Pulsars in Globular Clusters with the Fast-folding Algorithm and a New Pulsar Discovered in M13

The Astrophysical Journal
We employed the fast-folding algorithm on L -band globular cluster (GC) observations taken with the Five-hundred-meter Aperture Spherical radio Telescope to search for new pulsars, especially those with a long rotational period.
Yaowei Li, Lin Wang, Lei Qian, Liyun Zhang, Yujie Chen, Dejiang Yin, Baoda Li, Yinfeng Dai, Ralph P. Eatough, Wenze Li, Dongyue Jiang, Xingnan Zhang, Minghui Li, Yujie Lian, Yuxiao Wu, Tong Liu, Kuo Liu, Zhichen Pan   +17 more
doaj   +1 more source

The Green Bank Northern Celestial Cap Pulsar Survey II: The Discovery and Timing of Ten Pulsars [PDF]

, 2018
We present timing solutions for ten pulsars discovered in 350 MHz searches with the Green Bank Telescope. Nine of these were discovered in the Green Bank Northern Celestial Cap survey and one was discovered by students in the Pulsar Search Collaboratory ...
Archibald, A. M., Banaszak, S., Biwer, C. M., Boyles, J., Cui, B., Dartez, L. P., Day, D., DeCesar, M. E., Ernst, S., Flanigan, J., Fonseca, E., Ford, A. J., Heatherly, S. A., Hessels, J. W. T., Hinojosa, J., Jenet, F. A., Kaplan, D. L., Karako-Argaman, C., Kaspi, V. M., Kawash, A. M., Kondratiev, V. I., Leake, S., Levin, L., Lorimer, D. R., Lunsford, G., Lynch, R. S., Martinez, J. G., Mata, A., Matheny, T. D., Mcewen, A. E., McLaughlin, M. A., Mingyar, M. G., Orsini, A. L., Ransom, S. M., Roberts, M. S. E., Rohr, M. D., Siemens, X., Spiewak, R., Stairs, I. H., Stovall, K., Swiggum, J. K., van Leeuwen, J., Walker, A. N., Wells, B. L.   +43 more
core   +2 more sources

Hidden slow pulsars in binaries

The Astrophysical Journal, 1993
The recent discovery of the binary containing the slow pulsar PSR 1718-19 orbiting around a low-mass companion star adds new light on the characteristics of binary pulsars. The properties of the radio eclipses of PSR 1718-19 are the most striking observational characteristics of this system.
Marco Tavani, Leigh Brookshaw
openaire   +1 more source

Pulsars and Close Binary Systems [PDF]

Symposium - International Astronomical Union, 1971
It is first considered what must happen if pulsars (i.e. neutron stars) are formed in close binary systems (CBS), and whether the resulting orbital motion and mass transfer should be observable. As this set of alternatives seems unlikely, there follow suggestions of how one might prevent the formation of neutron stars in close binaries.
Virginia Trimble, Martin Rees
openaire   +1 more source

Genetic modification of Water spinach (Ipomoea aquatica), a genoprotective perennial leafy green

Physiologia Plantarum, Volume 177, Issue 3, May/June 2025.
Abstract Improvement of leafy greens, especially perennials with year‐round harvesting, is binding to the food security drive. “Food for All” by WHO demands the improvement of regional crops due to the agroclimatic specificity to ensure regional food security.
Fayas Thayale Purayil, Mariam Alzaabi, Shina Sasi, Saranya Krishnan, Zarreen Badar, Ling Li, Martin Kottackal, Khaled M. A. Amiri   +7 more
wiley   +1 more source

Follow-up Investigation of 11 Pulsars Discovered in the Commensal Radio Astronomy FAST Survey

The Astrophysical Journal
In this paper, we study 11 pulsars that were discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in the Commensal Radio Astronomy FAST Survey.
K. Yang, L. Li, J. P. Yuan, N. Wang, D. Li, P. Wang, C. C. Miao, W. W. Zhu, M. Y. Xue, W. M. Yan, J. B. Wang, R. Yuen, G. L. Lü, C. H. Zhu, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, D. Zhao, Z. Wang, J. Xu, C. Sun, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, C. H. Niu, J. R. Niu, L. Qian, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, S. J. Dang, X. H. Yu, R. S. Zhao, X. Zhou, L. Zhang, J. F. Wu, C. J. Wang, Y. B. Wang, Z. Y. Gan   +42 more
doaj   +1 more source

Binary Pulsar Tests of General Relativity in the Presence of Low-Frequency Noise [PDF]

, 1999
The influence of the low-frequency timing noise on the precision of measurements of the Keplerian and post-Keplerian orbital parameters in binary pulsars is studied.
Kopeikin, Sergei M., Potapov, Vladimir A.   +1 more
core   +1 more source

Populating the Galaxy with pulsars I: stellar & binary evolution

, 2008
The computation of theoretical pulsar populations has been a major component of pulsar studies since the 1970s. However, the majority of pulsar population synthesis has only regarded isolated pulsar evolution.
Alpar, Arons, Arzoumanian, Baade, Baade, Bailes, Belczynski, Belczynski, Bell, Beloborodov, Bhattacharya, Bhattacharya, Bildsten, Bisnovatyi-Kogan, Blondin, Bonai Marinovi, Burgay, Burgay, Cameron, Champion, Chandrasekhar, Chen, Choudhuri, Choudhuri, Colpi, Contopoulos, Cumming, Dai, Davidson, Deloye, Dewey, Dewi, Dewi, Dewi, Duncan, Duquennoy, Faucher-Giguere, Faulkner, Ferrario, Freire, Freire, Freire, Friedman, Fryer, Fryer, Fryer, Fryer, Galloway, Geppert, Gold, Goldreich, Gonthier, Gonthier, Gotthelf, Gunn, Harding, Harding, Harding, Harding, Harding, Harding, Hartman, Heger, Heger, Herant, Herant, Hewish, Hibschman, Hobbs, Huang, Hurley, Hurley, Illarionov, Ivanova, Jahan-Miri, Jahan-Miri, James R. Murray, Janka, Jarrod R. Hurley, Kaaret, Kalogera, Kiel, Kim, Kitaura, Konar, Konar, Konar, Konar, Krimm, Kroupa, Kulkarni, Kundt, Kuranov, Lattimer, Lattimer, Levin, Liu, Lorimer, Lorimer, Lorimer, Lovelace, Lyne, Lyne, Lyne, Manchester, Matthew Bailes, Melatos, Melatos, Mezzacappa, Mezzacappa, Mezzacappa, Michel, Miyaji, Muslimov, Muslimov, Nice, Nice, Nomoto, Nomoto, Nomoto, O'Shaughnessy, O'Shaughnessy, Ostriker, Pacini, Paul D. Kiel, Payne, Payne, Pfahl, Pfahl, Phinney, Podsiadlowski, Podsiadlowski, Podsiadlowski, Poelarends, Portegies Zwart, Portegies Zwart, Possenti, Possenti, Press, Pringle, Rathnasree, Regimbau, Regimbau, Romani, Ruderman, Ruderman, Ruderman, Ruderman, Ruffert, Savonije, Shapiro, Shibazaki, Shklovsky, Spitkovsky, Spruit, Stollman, Story, Taam, Tauris, Tavani, Taylor, Thompson, Thompson, Thorne, Tolman, Ulrich, Urpin, Urpin, van den Heuvel, van Kerkwijk, van Paradijs, van Straten, Verbiest, Vivekanand, Wheeler, Willems, Woods, Zhang, Zhang   +178 more
core   +1 more source

Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
wiley   +1 more source