Results 51 to 60 of about 24,425 (256)

The Timing of Nine Globular Cluster Pulsars

, 2012
We have used the Robert C. Byrd Green Bank Telescope to time nine previously known pulsars without published timing solutions in the globular clusters M62, NGC 6544, and NGC 6624.
Biggs, Boyles, Bryan A. Jacoby, Camilo, Carretta, Chandler, Cocozza, Dessart, D’Amico, D’Amico, D’Amico, Freire, Freire, Freire, Freire, Haslam, Jacoby, King, Lyne, Nice, Paulo C. C. Freire, Pfahl, Phinney, Possenti, Ransom, Ransom, Ryan S. Lynch, Scott M. Ransom, Shklovskii, Splaver, Verbiest, Webbink, Wong   +32 more
core   +1 more source

Gamma-ray binaries: pulsars in disguise? [PDF]

Astronomy & Astrophysics, 2006
20 pages, 20 figures, accepted for publication in A& ...
openaire   +4 more sources

Leveraging Compressed Sensing and Radiomics for Robust Feature Selection for Outcome Prediction in Personalized Ultra‐Fractionated Stereotactic Adaptive Radiotherapy

Advanced Intelligent Systems, Volume 7, Issue 12, December 2025.
A compressed sensing (CS)‐based feature selection method is proposed to select the most informative elements in the radiomic features extracted from medical images of personalized ultra‐fractionated stereotactic adaptive treatment. The CS‐based approach is able to simplify the feature selection process and enhance the accuracy and robustness of a ...
Yajun Yu, Steve Jiang, Robert Timmerman, Hao Peng   +3 more
wiley   +1 more source

RELATIVISTIC SPIN-PRECESSION IN BINARY PULSARS [PDF]

The Twelfth Marcel Grossmann Meeting, 2012
After the first prediction to expect geodetic precession in binary pulsars in 1974, made immediately after the discovery of a pulsar with a companion, the effects of relativistic spin precession have now been detected in all binary systems where the magnitude of the precession rate is expected to be sufficiently high.
openaire   +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

The GMRT High Resolution Southern Sky Survey for Pulsars and Transients. IV. Discovery of Four New Pulsars with an FFA Search

The Astrophysical Journal, 2023
The fast Fourier transform (FFT) based periodicity search methods provide an efficient way to search for millisecond and binary pulsars but encounter significant sensitivity degradation while searching for long period and short duty cycle pulsars.
S. Singh, J. Roy, B. Bhattacharyya, U. Panda, B. W. Stappers, M. A. McLaughlin   +5 more
doaj   +1 more source

The characteristics of millisecond pulsar emission: I. Spectra, pulse shapes and the beaming fraction

, 1998
We have monitored a large sample of millisecond pulsars using the 100-m Effelsberg radio telescope in order to compare their radio emission properties to the slowly rotating population.
Alexander Wolszczan, Axel Jessner, Backer D. C., Bell J. F., Biggs J. D., Clifton T. R., D'Amico N., Doroshenko O. V., Duncan R. Lorimer, Fernando Camilo, Geppert U., Gil J. A., Gil J. A., Gil J. A., Jahan Miri M., Johnston S., Kanbach G., Kijak J., Kiriaki M. Xilouris, Kramer M., Kramer M., Lorimer D. R., Lorimer D. R., Lyne A. G., Malofeev V. M., Manchester R. N., Matese J. J., Michael Kramer, Narayan R., Nicastro L., Oleg Doroshenko, Ott M., Radhakrishnan V., Richard Wielebinski, Seiradakis J. H., Shklovskii I. S., Srinivasan G., Van den Heuvel E. P. J., von Hoensbroech A., von Hoensbroech A., Xilouris K. M.   +40 more
core   +1 more source

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

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

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