Results 31 to 40 of about 17,684 (219)

Gravitational waves from pulsars in the context of magnetic ellipticity

European Physical Journal C: Particles and Fields, 2017
In one of our previous articles we have considered the role of a time dependent magnetic ellipticity on the pulsars’ braking indices and on the putative gravitational waves these objects can emit.
José C. N. de Araujo, Jaziel G. Coelho, Cesar A. Costa   +2 more
doaj   +1 more source

The LOFAR pilot surveys for pulsars and fast radio transients [PDF]

, 2014
We have conducted two pilot surveys for radio pulsars and fasttransients with the Low-Frequency Array (LOFAR) around 140 MHz and herereport on the first low-frequency fast-radio burst limit and thediscovery of two new pulsars. The first survey, the LOFAR
Röttgering, H., Wucknitz, O, Weltevrede, Patrick, McFadden, R., Garrett, MA, M. Brüggen, Wijnholds, S., van Amesfoort, A. S., Hassall, T., Brüggen, M, Griessmeier, Jean-Mathias, Kuniyoshi, M, Orru, E, Karastergiou, A., Corstanje, A., Garrett, M., Hessels, Jason W T, McKay-Bukowski, D., Thoudam, S, Tasse, C, Hassall, T E, Sluman, J, Zensus, A, Kramer, M, van Weeren, R., C. Sobey, Zagkouris, K, Broderick, J, Kuper, G, Brüggen, M., Hassall, TE, Bilous, A, Rowlinson, A, Pilia, M., Sobey, Charlotte, van der Horst, A., T. E. Hassall, Fender, R, Hessels, Jason W. T., Ciardi, B., Noutsos, A, Falcke, H, Jason W. T. Hessels, Vladislav I. Kondratiev, M. J. Bentum, Röttgering, H, Anderson, J., Gajjar, V., Keane, EF, M. E. Bell, Noutsos, A., Schwarz, D, S. Cooper, Stappers, B.W., Grießmeier, J-M, Griessmeier, J-M., Paas, H., Butcher, H., E. Juette, Sobey, C., van Weeren, R. J., Karastergiou, A, Verbiest, J, van Weeren, RJ, A. van der Horst, Weltevrede, P, Bell, M. E., Hoeft, M., R. P. Breton, Verbiest, J., Mann, G., Keane, E., Renting, A., J. Broderick, Butcher, HR, Hamaker, J., Kuper, G., H. Röttgering, G. Mann, Hassall, T.E., Hassall, T. E., K. Zagkouris, Garrett, Michael; id_orcid, Toribio, C, Grießmeier, J., Tagger, M., Thoudam, S., Grießmeier, J.-M., Cooper, S., Osłowski, S., I. M. Avruch, W. Reich, Polatidis, A G, Eislöffel, J., R. McFadden, Juette, E., Munk, H, Griessmeier, J.M., A. Bilous, Kondratiev, VI, C. Schrijvers, Kondratiev, Vladislav I., A. M. M. Scaife, Veen, S., Garrett, M. A., Amesfoort, A., Schrijvers, C., Thijs Coenen, Bell, M E, Deller, A., Fallows, R A, R. Fender, Zarka, P., Bell, ME, Schwarz, Dominik ; https://orcid.org/, Bonafede, A, Kondratiev, V., Pilia, M, Sobey, C, Heald, G., Tagger, Michel, Garrett, M.A., van Leeuwen, J., P. Zarka, Smirnov, O., Keane, E. F., van Weeren, R J, Bell, M., Breton, Rene P; id_orcid, Oslowski, S., J. Anderson, C. Ferrari, Avruch, IM, et al., C. Law, J.-M. Grießmeier, Alexov, A, Scaife, A M M; id_orcid, Serylak, M, E. Orru, McKean, J P, Thoudam, Satyendra,, O. Smirnov, Scaife, AMM, Breitling, F., Hamaker, J P, M. Hoeft, Coenen, Thijs, Butcher, H. R., Avruch, I., G. Bernardi, A. Corstanje, Hessels, J., Kramer, M., Brueggen, M, R. J. van Weeren, Scaife, A., S. Duscha, Gunst, A. W., Best, P, Corstanje, A, van Amesfoort, A S, Zagkouris, K., Bernardi, G., S. Osłowski, Broderick, J., de Geus, E., McKean, J., McKean, J. P., C. Tasse, Swinbank, J., et al, Vocks, C., A. W. Gunst, Vocks, C, Oslowski, Stefan, Schwarz, D., Bernardi, G, A. Karastergiou, Breitling, F, Breton, R.P., D. McKay-Bukowski, Gasperin, F., Tasse, C., Stappers, Benjamin W; id_orcid, A. G. Polatidis, Cooper, S, ter Veen, S, Gunst, A., F. Breitling, et al., [Unknown], A. Noutsos, Deller, A, Sluman, J., McKean, JP, Joeri van Leeuwen, Brueggen, M., Veen, S. ter, Oslowski, S, V. Gajjar, M. Serylak, Gajjar, V, R. Vermeulen, Kuniyoshi, M., E. F. Keane, M. Kramer, M. Pilia, Gunst, A W, van der Horst, A, Y. Tang, Asgekar, A., Fallows, R., van Leeuwen, J, Bilous, A., Scaife, A. M. M., Juette, E, Gunst, AW, Stappers, Ben W., Fallows, RA, Bentum, M J, Hoeft, M, Ferrari, C., J. P. Hamaker, Ben W. Stappers, Keane, E F, Geus, E., Toribio, C., Coenen, T., Kondratiev, Vladislav I, M. A. Garrett, Eisloeffel, J., McKay-Bukowski, D, Kondratiev, V.I., Wijnholds, S, Stappers, B., G. Heald, Horst, A., Asgekar, A, P. Best, H. Munk, Mann, G, Hessels, JWT, van Amesfoort, AS, Coenen, T.J., B. Ciardi, Bentum, M. J., J. P. McKean, Zensus, A., S. Thoudam, Stappers, BW, Ciardi, B, Hessels, J. W. T., Anderson, J, Bentum, Marinus Jan, Verbiest, Joris ; https://orcid.org/, A. Rowlinson, ter Veen, S., M. Pandey-Pommier, Paas, H, Kondratiev, V. I., Polatidis, A. G., Hessels, J.W.T., G. Kuper, Eislöffel, J, Falcke, H., Leeuwen, J., Bentum, M., Rowlinson, A., S. Wijnholds, Pandey-Pommier, M, Polatidis, A., Eisloeffel, J, Hamaker, JP, Tagger, M, Orru, E., Serylak, M., Smirnov, O, A. Zensus, Polatidis, AG, Röttgering, H.J.A., Stappers, B. W., H. Falcke, W. Frieswijk, A. Renting, Hamaker, J. P., C. Vocks, Heald, G, A. Deller, M. Tagger, Bonafede, A., Schrijvers, C, J. Swinbank, Fender, R., S. ter Veen, D. Schwarz, E. de Geus, Law, C, R. A. Fallows, O. Wucknitz, A. Alexov, de Geus, E, F. de Gasperin, J. Eislöffel, A. Asgekar, Law, C., Renting, A, Fallows, R. A., Best, P., Frieswijk, W., Van Amesfoort, A., Ferrari, C, Wucknitz, O., Osłowski, S, J. Verbiest, de Gasperin, F, H. R. Butcher, Frieswijk, W, Tang, Y, Breton, R., Swinbank, J, P. Weltevrede, H. Paas, Coenen, T, Vermeulen, R., Butcher, H R, de Gasperin, F., Os\lowski, S., van Leeuwen, Joeri, Weltevrede, P., Alexov, A., Zarka, P, Grießmeier, J. -M., Breton, R. P., Reich, W., Grießmeier, J. -M, McFadden, R, J. Sluman, Avruch, I. M., Bentum, MJ, Reich, W, A. S. van Amesfoort, Avruch, I M, Breton, RP, Pandey-Pommier, M., Fallows, R.A., Duscha, S., C. Toribio, M. Kuniyoshi, Tang, Y., Duscha, S, A. Bonafede, Munk, H., Vermeulen, R   +352 more
core   +3 more sources

Recent H-alpha Results on Pulsar B2224+65’s Bow-Shock Nebula, the “Guitar” [PDF]

Journal of Astronomy and Space Sciences, 2016
We used the 4 m Discovery Channel Telescope (DCT) at Lowell observatory in 2014 to observe the Guitar Nebula, an Hα bow-shock nebula around the high-velocity radio pulsar B2224+65.
Timothy Dolch, Shami Chatterjee, Dan P. Clemens, James M. Cordes, Lauren R. Cashmen, Brian W. Taylor   +5 more
doaj   +1 more source

Pulsar statistics - IV. Pulsar velocities [PDF]

Monthly Notices of the Royal Astronomical Society, 1997
We have used Monte Carlo simulations of the Galactic pulsar population to reassess the kinematics of radio pulsars in light of the large number of recently published proper motions and the revised distance model. Our modelling of the observational selection effects that distort the observed sample is far more detailed and self-consistent than that of ...
Lorimer, D. R., Bailes, M., Harrison, P. A.   +2 more
openaire   +2 more sources

Polarimetric Evidence of the First White Dwarf Pulsar: The Binary System AR Scorpii

Galaxies, 2018
The binary star AR Scorpii was recently discovered to exhibit high amplitude coherent variability across the electromagnetic spectrum (ultraviolet to radio) at two closely spaced ∼2 min periods, attributed to the spin period of a white dwarf and the beat
David A.H. Buckley, Stephen B. Potter, Pieter J. Meintjes, Tom R. Marsh, Boris T. Gänsicke   +4 more
doaj   +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   +2 more sources

The environment of TeV halo progenitors

Astronomy & Astrophysics
Context. TeV haloes are extended sources of very-high-energy gamma rays found around some middle-aged pulsars. The emission spanning several tens of parsecs suggests an efficient confinement of the ultra-relativistic lepton pairs produced by pulsars in ...
Bourguinat Lioni-Moana, Evoli Carmelo, Martin Pierrick, Recchia Sarah   +3 more
doaj   +1 more source

Understanding the diffuse gamma ray emission of the milky way - from supernova remnants to dark matter [PDF]

Zbornik Matice Srpske za Prirodne Nauke, 2019
Diffuse gamma ray emission from the Galactic center at 2-3 GeV, as well as the 12 TeV gamma ray excess in the Galactic disk, remain open for debate and represent the missing puzzles in the complete picture of the high-energy Milky Way sky.
Petrović Jovana M., Prodanović Tijana S., Kovačević Miloš I.   +2 more
doaj   +1 more source

Pulsars and their genesis

, 1986
Recent research on the nature of pulsars and the reasons for their formation is reviewed. The magnetospheres of pulsars are discussed, and the significance of binary stars for the genesis of pulsars is addressed.
Radhakrishnan, V.
core   +4 more sources

Relativistic Effects of Rotation in γ-ray Pulsars—Invited Review

Galaxies, 2021
In this paper, we consider the relativistic effects of rotation in the magnetospheres of γ-ray pulsars. The paper reviews the progress achieved in this field during the last three decades.
Zaza Osmanov
doaj   +1 more source