Results 41 to 50 of about 178,608 (254)

A new nearby pulsar wind nebula overlapping the RX J0852.0-4622 supernova remnant [PDF]

, 2012
Energetic pulsars can be embedded in a nebula of relativistic leptons which is powered by the dissipation of the rotational energy of the pulsar.
Acero, F., Ballet, J., Gallant, Y., Renaud, M., Terrier, R.   +4 more
core   +4 more sources

Gamma-ray pulsar halos in the Galaxy

Frontiers in Astronomy and Space Sciences, 2022
Pulsar halos are extended gamma-ray structures generated by electrons and positrons escaping from pulsar wind nebulae (PWNe), considered a new class of gamma-ray sources.
Kun Fang
doaj   +1 more source

Pulsar Searches with the SKA [PDF]

, 2017
The Square Kilometre Array will be an amazing instrument for pulsar astronomy. While the full SKA will be sensitive enough to detect all pulsars in the Galaxy visible from Earth, already with SKA1, pulsar searches will discover enough pulsars to increase
Armour, W., Baffa, C., Barr, E., Cooper, S., Eatough, R., Ensor, A., Giani, E., Karastergiou, A., Karuppusamy, R., Keith, M., Kramer, M., Levin, L., Lyon, R., Mackintosh, M., Mickaliger, M., Pearson, M., Prabu, T., Roy, J., Sinnen, O., SKA TDT, T., Spitler, L., Spreeuw, H., Stappers, B., van Nieuwpoort, R., van Straten, W., Wang, H., Wiesner, K., Williams, C.   +27 more
core   +3 more sources

Variable Magellanic HMXB Sources versus Variable ULX Sources: Nothing to Brag about the ULX Sources

Galaxies, 2020
We carry out a meta-analysis of ultraluminous X-ray (ULX) sources that show large variabilities (by factors of >10) between their highest and lowest emission states in the X-ray energy range of 0.3–10 keV.
Dimitris M. Christodoulou, Silas G. T. Laycock, Rigel Cappallo, Ankur Roy, Sayantan Bhattacharya , Demosthenes Kazanas   +5 more
doaj   +1 more source

Detection and localization of continuous gravitational waves with pulsar timing arrays: the role of pulsar terms [PDF]

, 2016
A pulsar timing array is a Galactic-scale detector of nanohertz gravitational waves (GWs). Its target signals contain two components: the `Earth term' and the `pulsar term' corresponding to GWs incident on the Earth and pulsar respectively.
Hobbs, George, Manchester, Richard N., Mohanty, Soumya D., Wang, Yan, Wen, Linqing, Xiong, Jie, Xu, Yanjun, Zhu, Xingjiang   +7 more
core   +3 more sources

Investigation of Accuracy of TOA and SNR of Radio Pulsar Signals for Vehicles Navigation

Sensors, 2023
It is known that X-ray and gamma-ray pulsars can only be observed by spacecraft because signals from these pulsars are impossible to be detected on the Earth’s surface due to their strong absorption by the Earth’s atmosphere.
Hristo Kabakchiev, Vera Behar, Dorina Kabakchieva, Valentin Kisimov, Kamelia Stefanova   +4 more
doaj   +1 more source

The International Pulsar Timing Array: second data release [PDF]

Monthly notices of the Royal Astronomical Society, 2019
In this paper, we describe the International Pulsar Timing Array second data release, which includes recent pulsar timing data obtained by three regional consortia: the European Pulsar Timing Array, the North American Nanohertz Observatory for ...
B. Perera, B. Perera, M. DeCesar, P. Demorest, M. Kerr, L. Lentati, D. Nice, S. Osłowski, S. Ransom, Michael J. Keith, Z. Arzoumanian, M. Bailes, P. Baker, C. Bassa, N. Bhat, A. Brazier, M. Burgay, S. Burke-Spolaor, S. Burke-Spolaor, R. N. Caballero, D. Champion, S. Chatterjee, S. Chen, I. Cognard, I. Cognard, J. Cordes, K. Crowter, Shi Dai, G. Desvignes, G. Desvignes, T. Dolch, R. Ferdman, E. Ferrara, E. Ferrara, E. Fonseca, Janna M. Goldstein, E. Graikou, L. Guillemot, L. Guillemot, J. Hazboun, G. Hobbs, H. Hu, K. Islo, G. Janssen, G. Janssen, R. Karuppusamy, Michael Kramer, Michael Kramer, M. Lam, Kejia Lee, Kang Liu, J. Luo, A. Lyne, R. Manchester, J. Mckee, J. Mckee, M. McLaughlin, C. Mingarelli, A. Parthasarathy, T. Pennucci, D. Perrodin, A. Possenti, A. Possenti, D. Reardon, C. Russell, S. Sanidas, A. Sesana, G. Shaifullah, R. Shannon, X. Siemens, X. Siemens, J. Simon, R. Spiewak, I. Stairs, B. Stappers, J. Swiggum, S. Taylor, S. Taylor, G. Theureau, G. Theureau, G. Theureau, C. Tiburzi, M. Vallisneri, A. Vecchio, Jiaxing Wang, S. Zhang, Li Zhang, Li Zhang, Weiwei Zhu, Weiwei Zhu, Xingjiang Zhu   +90 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

Spin Equilibrium of Rapidly Spinning Neutron Stars via Transient Accretion

Galaxies, 2023
The concept of spin equilibrium due to an interaction between the stellar magnetosphere and a thin, Keplerian accretion disk, and a well-known formula of the corresponding equilibrium spin frequency, provide a key understanding of spin evolution and the ...
Sudip Bhattacharyya
doaj   +1 more source

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