Results 51 to 60 of about 22,313 (204)

A Relativistic Double Neutron Star Binary PSR J1846-0513

The Astrophysical Journal Letters
We report the timing analysis of PSR J1846−0513, a pulsar discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Commensal Radio Astronomy FAST Survey. The pulsar possesses a spin period of 23.36 ms and a spin-down rate ( $\dot{
D. Zhao, N. Wang, J. P. Yuan, D. Li, P. Wang, M. Y. Xue, W. W. Zhu, C. C. Miao, W. M. Yan, J. B. Wang, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, Y. T. Chen, S. J. Dang, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, M. Yuan, C. H. Niu, J. R. Niu, L. Qian, S. Wang, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, X. H. Yu, R. S. Zhao, R. Yuen, X. Zhou, L. Zhang, Y. B. Wang, J. F. Wu, Z. Y. Gan, Z. Y. Sun, C. J. Wang   +39 more
doaj   +1 more source

X-ray Pulsars in the Small Magellanic Cloud

, 2004
XMM-Newton archival data for the Small Magellanic Cloud have been examined for the presence of previously undetected X-ray pulsars. One such pulsar, with a period of 202 s, is detected.
Corbet R., Corbet R., D. J. Macomb, Haberl F., Lamb R. C., Liu Q. Z., R. C. Lamb, Udalski A., W. A. Majid, Waters L. B. F. M., Yokogawa J., Yokogawa J.   +11 more
core   +2 more sources

Climate Emergency and Different Ways to Fail? The Fermi Paradox, the Simulation Hypothesis, Agency and Hope

Journal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.
ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
wiley   +1 more source

New Binary and Millisecond Pulsars from Arecibo Drift-Scan Searches [PDF]

, 2004
We discuss four recycled pulsars found in Arecibo drift-scan searches. PSR J1944+0907 has a spin period of 5.2 ms and is isolated. The 5.8-ms pulsar J1453+19 may have a low-mass companion.
Arzoumanian, Z., Backer, D. C., Champion, D. J., Cordes, J. M., Fruchter, A. S., Lommen, A. N., Lorimer, D. R., McLaughlin, M. A., Xilouris, K. M.   +8 more
core  

Young Radio Pulsars in Galactic Globular Clusters [PDF]

, 2011
Currently three isolated radio pulsars and one binary radio pulsar with no evidence of any previous recycling are known in 97 surveyed Galactic globular clusters.
Bailes, Biggs, Booth, Camilo, Chandler, Cordes, D. R. Lorimer, Deneva, Dessart, D’Amico, Faucher-Giguère, Fregeau, Freire, Freire, Freire, Gnedin, Hessels, Hui, J. Boyles, Jacoby, Johnston, K. Belczynski, Klein, Kramer, Krauss, Liebert, Lorimer, Lorimer, Lynch, Lynch, Lyne, Manchester, McCrea, P. C. Freire, P. J. Turk, Paust, R. Mnatsakanov, R. S. Lynch, Ransom, S. M. Ransom, Scalo, Webbink   +41 more
core   +3 more sources

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

Origin of the Binary Pulsar J0737-3039B

Physical Review Letters, 2005
Evolutionary scenarios suggest that the progenitor of the new binary pulsar J0737-3039B \cite{ref1,ref2} was a He-star with $M > 2.1-2.3~\Ms$ \cite{ref3,ref4}. We show that this case implies that the binary must have a large ($>120$ km/s) center of mass velocity.
Piran, Tsvi, Shaviv, Nir J.
openaire   +4 more sources

CHIME Discovery of a Binary Pulsar with a Massive Nondegenerate Companion

The Astrophysical Journal, 2023
Of the more than 3000 radio pulsars currently known, only ∼300 are in binary systems, and only five of these consist of young pulsars with massive nondegenerate companions.
Bridget C. Andersen, Emmanuel Fonseca, J. W. McKee, B. W. Meyers, Jing Luo, C. M. Tan, I. H. Stairs, Victoria M. Kaspi, M. H. van Kerkwijk, Mohit Bhardwaj, P. J. Boyle, Kathryn Crowter, Paul B. Demorest, Fengqiu A. Dong, Deborah C. Good, Jane F. Kaczmarek, Calvin Leung, Kiyoshi W. Masui, Arun Naidu, Cherry Ng, Chitrang Patel, Aaron B. Pearlman, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott M. Ransom, Kendrick M. Smith, Shriharsh P. Tendulkar   +27 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

Pulse-profile Modeling and Spin–Orbit Alignment in a Suzaku Sample of Accreting X-Ray Binary Pulsars

The Astrophysical Journal
We report pulse-profile modeling of a sample of 23 X-ray binary pulsars observed with the Suzaku X-ray satellite. These pulsars have spin periods ranging from 0.7 to 9400 s, and their X-ray emission is powered by the accretion from their stellar ...
Silas G. T. Laycock, Rigel C. Cappallo, Pragati Pradhan, Dimitris M. Christodoulou, Biswajit Paul   +4 more
doaj   +1 more source