Results 51 to 60 of about 167,860 (299)

DECAMETER PULSAR/TRANSIENT SURVEY OF NORTHEN SKY. FIRST RESULTS

Radio Physics and Radio Astronomy, 2014
The decameter pulsar/transient survey is now being made using the UTR-2 radio telescope. The survey strategy and parameters, equipment characteristics, data processing algorithms as well as preliminary results are described. The very first result was the
Ia. Yu. Vasylieva, V. V. Zakharenko, A. A. Konovalenko, P. Zarka, O. M. Ulyanov, A. I. Shevtsova, A. O. Skoryk   +6 more
doaj   +1 more source

The International Pulsar Timing Array: First Data Release [PDF]

, 2016
The highly stable spin of neutron stars can be exploited for a variety of (astro)physical investigations. In particular, arrays of pulsars with rotational periods of the order of milliseconds can be used to detect correlated signals such as those caused ...
J. Verbiest, J. Verbiest, L. Lentati, G. Hobbs, R. V. Haasteren, P. Demorest, G. Janssen, Jiaxing Wang, G. Desvignes, R. N. Caballero, M. Keith, D. Champion, Z. Arzoumanian, S. Babak, C. Bassa, N. Bhat, A. Brazier, P. Brem, M. Burgay, S. Burke-Spolaor, S. Chamberlin, S. Chatterjee, B. Christy, I. Cognard, I. Cognard, J. Cordes, S. Dai, S. Dai, T. Dolch, T. Dolch, J. Ellis, R. Ferdman, E. Fonseca, J. Gair, N. Garver-Daniels, P. Gentile, M. Gonzalez, E. Graikou, L. Guillemot, L. Guillemot, J. Hessels, J. Hessels, Glenn Jones, R. Karuppusamy, M. Kerr, Michael Kramer, M. Lam, P. Lasky, A. Lassus, P. Lazarus, T. Lazio, Kejia Lee, L. Levin, L. Levin, Kang Liu, R. Lynch, A. Lyne, J. Mckee, M. Mclaughlin, S. McWilliams, D. Madison, R. Manchester, C. Mingarelli, C. Mingarelli, D. Nice, S. Osłowski, S. Osłowski, N. Palliyaguru, T. Pennucci, B. Perera, D. Perrodin, A. Possenti, A. Petiteau, S. Ransom, D. Reardon, D. Reardon, P. Rosado, S. Sanidas, A. Sesana, G. Shaifullah, G. Shaifullah, R. Shannon, R. Shannon, X. Siemens, J. Simon, R. Smits, R. Spiewak, I. Stairs, B. Stappers, D. Stinebring, K. Stovall, J. Swiggum, S. Taylor, G. Theureau, G. Theureau, G. Theureau, C. Tiburzi, C. Tiburzi, L. Toomey, M. Vallisneri, W. Straten, A. Vecchio, Yue-Fei Wang, L. Wen, X. You, Weiwei Zhu, Xingjiang Zhu   +106 more
semanticscholar   +1 more source

Gravitational waves from binary supermassive black holes missing in pulsar observations [PDF]

Science, 2015
Placing bounds on gravitational wave detection Gravitational waves are expected to be generated by the interaction of the massive bodies in black-hole binary systems.
R. Shannon, Ravi, L. Lentati, P. Lasky, G. Hobbs, M. Kerr, R. Manchester, W. Coles, Y. Levin, M. Bailes, N. Bhat, S. Burke-Spolaor, Shi Dai, M. Keith, S. Osłowski, D. Reardon, W. V. Strateni, L. Toomey, J. Wang, L. Wen, J. Wyithe, Xiaoshuai Zhu   +21 more
semanticscholar   +1 more source

Orthogonal pulsars as a key test for pulsar evolution [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT At present, there is no direct information about evolution of inclination angle χ between magnetic and rotational axes in radio pulsars. As to theoretical models of pulsar evolution, they predict both the alignment, i.e. evolution of inclination angle χ to 0°, and its counter-alignment, i.e. evolution to 90°.
M. M. Rashkovetskyi, Anton Biryukov, Anton Biryukov, A. K. Galishnikova, A. K. Galishnikova, E. M. Novoselov, V. S. Beskin, V. S. Beskin   +7 more
openaire   +3 more sources

The LOFAR Tied-Array All-Sky Survey (LOTAAS): Survey overview and initial pulsar discoveries [PDF]

Astronomy & Astrophysics, 2019
We present an overview of the LOFAR Tied-Array All-Sky Survey (LOTAAS) for radio pulsars and fast transients. The survey uses the high-band antennas of the LOFAR Superterp, the dense inner part of the LOFAR core, to survey the northern sky (δ >  0°) at a
S. Sanidas, S. Cooper, C. Bassa, J. Hessels, V. Kondratiev, D. Michilli, B. Stappers, C. Tan, J. V. Leeuwen, L. Cerrigone, R. Fallows, M. Iacobelli, E. Orrú, R. Pizzo, A. Shulevski, M. C. Toribio, S. Veen, P. Zucca, L. Bondonneau, J. Grießmeier, A. Karastergiou, M. Kramer, C. Sobey   +22 more
semanticscholar   +1 more source

Spectral signature of a free pulsar wind in the gamma-ray binaries LS 5039 and LSI +61$\degr$303 [PDF]

, 2008
LS 5039 and LSI +61$\degr$303 are two binaries that have been detected in the TeV energy domain. These binaries are composed of a massive star and a compact object, possibly a young pulsar.
Aharonian, Aharonian, Albert, B. Cerutti, Ball, Ball, Begelman, Blumenthal, Bogovalov, Bogovalov, Bosch-Ramon, Casares, Casares, Chernyakova, Dubus, Dubus, Dubus, Eichler, Fargion, G. Dubus, G. Henri, Grundstrom, Hartman, Johnston, Jones, Kennel, Khangulyan, Kirk, Komissarov, McSwain, Rees, Romero, Sierpowska, Stevens, Waters, Zdziarski   +35 more
core   +3 more sources

POLAR GAP IN THE PULSAR FORCE-FREE MAGNETOSPHERE STRUCTURE

Radio Physics and Radio Astronomy, 2015
The stationary axisymmetric force-free magnetosphere of a pulsar is considered by accounting for the polar gap and current circuit. Adjustment of the vacuum polar gap and the closing current sheet with the force-free magnetosphere of a monopolar ...
S. A. Petrova
doaj   +1 more source

Predicting Pulsars from Imbalanced Dataset with Hybrid Resampling Approach

Advances in Astronomy, 2021
Pulsar stars, usually neutron stars, are spherical and compact objects containing a large quantity of mass. Each pulsar star possesses a magnetic field and emits a slightly different pattern of electromagnetic radiation which is used to identify the ...
Ernesto Lee, Furqan Rustam, Wajdi Aljedaani, Abid Ishaq, Vaibhav Rupapara, Imran Ashraf   +5 more
doaj   +1 more source

A pulsar-based time-scale from the International Pulsar Timing Array [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We have constructed a new time-scale, TT(IPTA16), based on observations of radio pulsars presented in the first data release from the International Pulsar Timing Array (IPTA).
G. Hobbs, L. Guo, R. N. Caballero, R. N. Caballero, W. Coles, Kejia Lee, R. Manchester, D. Reardon, D. Matsakis, M. Tong, Z. Arzoumanian, M. Bailes, C. Bassa, N. Bhat, A. Brazier, S. Burke-Spolaor, D. Champion, S. Chatterjee, I. Cognard, I. Cognard, S. Dai, G. Desvignes, T. Dolch, R. Ferdman, E. Graikou, L. Guillemot, L. Guillemot, G. Janssen, G. Janssen, Michael J. Keith, M. Kerr, M. Kramer, M. Lam, Kang Liu, A. Lyne, T. Lazio, R. Lynch, R. Lynch, J. Mckee, M. McLaughlin, C. Mingarelli, D. Nice, S. Osłowski, T. Pennucci, B. Perera, D. Perrodin, A. Possenti, A. Possenti, C. Russell, S. Sanidas, A. Sesana, G. Shaifullah, Ryan M. Shannon, Ryan M. Shannon, J. Simon, R. Spiewak, I. Stairs, B. Stappers, J. Swiggum, S. Taylor, G. Theureau, G. Theureau, G. Theureau, L. Toomey, R. V. Haasteren, J. Wang, Yue-Fei Wang, Xingjiang Zhu   +67 more
semanticscholar   +1 more source

Pulsars and Magnetars [PDF]

Brazilian Journal of Physics, 2013
The high-energy sources known as anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are well explained as magnetars: isolated neutron stars powered by their own magnetic energy. After explaining why it is generally believed that the traditional energy sources at work in other neutron stars (accretion, rotation, residual heat) cannot ...
openaire   +4 more sources