50 picoarcsec astrometry of pulsar emission
Access Status
Fulltext not available
Authors
Pen, U-l
Macquart, Jean-Pierre
Deller, A
Brisken, W.
Date
2014Type
Journal Article
Metadata
Show full item recordAbstract
We use very long baseline interferometry (VLBI) imaging of the interstellar scattering speckle pattern associated with the pulsar PSR 0834+06 to measure the astrometric motion of its emission. The D ~ 5 au interstellar baselines, provided by interference between speckles spanning the scattering disc, enable us to detect motions with subnanoarcsecond accuracy. We measure a small pulse deflection of ~18 ± 2 km (not including geometric uncertainties), which is 100 times smaller than the characteristic resolution (λ/D) of this interstellar interferometer. This implies that the emission region is small, and at an altitude of a few hundred km, with the exact value depending on field geometry. This is substantially closer to the star than to the light cylinder. Future VLBI measurements can improve on this finding. This new regime of ultraprecise astrometry may enable precision parallax distance determination of pulsar binary displacements.
Citation
Pen, Ue-Li and Macquart, Jean-Pierre and Deller, Adam T. and Brisken, Walter. 2014. 50 picoarcsec astrometry of pulsar emission. Monthly Notices of the Royal Astronomical Society Letters. 440 (1): pp. L36-L40.
Source Title
Monthly Notices of the Royal Astronomical Society: Letters
Collections
Related items
Showing items related by title, author, creator and subject.
-
Zhu, W.; Berndsen, A.; Madsen, E.; Tan, M.; Stairs, I.; Brazier, A.; Lazarus, P.; Lynch, R.; Scholz, P.; Stovall, K.; Ransom, S.; Banaszak, S.; Biwer, C.; Cohen, S.; Dartez, L.; Flanigan, J.; Lunsford, G.; Martinez, J.; Mata, A.; Rohr, M.; Walker, A.; Allen, B.; Bhat, Ramesh; Bogdanova, S.; Camilo, F.; Chatterjee, S.; Cordes, J.; Crawford, F.; Deneva, J.; Desvignes, G.; Ferdman, R.; Freire, P.; Hessels, J.; Jenet, F.; Kaplan, D.; Kaspi, V.; Knispel, B.; Lee, K.; van Leeuwen, J.; Lyne, A.; McLaughlin, M.; Siemens, X.; Spitler, L.; Venkataraman, A. (2014)In the modern era of big data, many fields of astronomy are generating huge volumes of data, the analysis of which can sometimes be the limiting factor in research. Fortunately, computer scientists have developed powerful ...
-
Abdo, A.; Ackermann, M.; Ajello, M.; Atwood, W.; Axelsson, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Baring, M.; Bastieri, D.; Baughman, B.; Bechtol, K.; Bellazzini, R.; Berenji, B.; Blandford, R.; Bloom, E.; Bonamente, E.; Borgland, A.; Bregeon, J.; Brez, A.; Brigida, M.; Bruel, P.; Burnett, T.; Buson, S.; Caliandro, G.; Cameron, R.; Camilo, F.; Caraveo, P.; Casandjian, J.; Cecchi, C.; Celik, O.; Charles, E.; Chekhtman, A.; Cheung, C.; Chiang, J.; Ciprini, S.; Claus, R.; Cognard, I.; Cohen-Tanugi, J.; Cominsky, L.; Conrad, J.; Corbet, R.; Cutini, S.; den Hartog, P.; Dermer, C.; de Angelis, A.; De Luca, A.; de Palma, F.; Digel, S.; Dormody, M.; Do Couto e Silva, E.; Drell, P.; Dubois, R.; Dumora, D.; Espinoza, C.; Farnier, C.; Favuzzi, C.; Fegan, S.; Ferrara, E.; Focke, W.; Fortin, P.; Frailis, M.; Freire, P.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Gehrels, N.; Germani, S.; Giavitto, G.; Giebels, B.; Giglietto, N.; Giommi, P.; Giordano, F.; Glanzman, T.; Godfrey, G.; Gotthelf, E.; Grenier, I.; Grondin, M.; Grove, J.; Guillemot, L.; Guiriec, S.; Gwon, C.; Hanabata, Y.; Harding, A.; Hayashida, M.; Hays, E.; Hughes, R.; Jackson, M.; Johannesson, G.; Johnson, A.; Johnson, R.; Johnson, T.; Johnson, W.; johnston, S.; Kamae, T.; Kanbach, G.; Kaspi, V.; Katagiri, H.; Kataoka, J.; Kawai, N.; Kerr, M.; Knödlseder, J.; Kocian, M.; Kramer, M.; Kuss, M.; Lande, J.; Latronico, L.; Lemoine-Goumard, M.; Livingstone, M.; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M.; Lubrano, P.; Lyne, A.; Madejski, G.; Makeev, A.; Manchester, R.; Marelli, M.; Mazziotta, M.; McConville, W.; McEnery, J.; McGlynn, S.; Meurer, C.; Michelson, P.; Mineo, T.; Mitthumsiri, W.; Mizuno, T.; Moiseev, A.; Monte, C.; Monzani, M.; Morselli, A.; Moskalenko, I.; Murgia, S.; Nakamori, T.; Nolan, P.; Norris, J.; Noutsos, A.; Nuss, E.; Ohsugi, T.; Omodei, N.; Orlando, E.; Ormes, J.; Ozaki, M.; Paneque, D.; Panetta, J.; Parent, D.; Pelassa, V.; Pepe, M.; Pesce-Rollins, M.; Piron, F.; Porter, T.; Raino, S.; Rando, R.; Ransom, S.; Ray, P.; Razzano, M.; Rea, N.; Reimer, A.; Reimer, O.; Reposeur, T.; Ritz, S.; Rodriguez, A.; Romani, R.; Roth, M.; Ryde, F.; Sadrozinski, H.; Sanchez, D.; Sander, A.; Saz Parkinson, P.; Scargle, J.; Schalk, T.; Sellerholm, A.; Sgro, C.; Siskind, E.; Smith, D.; Smith, P.; Spandre, G.; Spinelli, P.; Stappers, B.; Starck, J.; Striani, E.; Strickman, M.; Strong, A.; Suson, D.; Tajima, H.; Takahashi, H.; Takahashi, T.; Tanaka, T.; Thayer, J.; Thayer, J.; Theureau, G.; Thompson, D.; Thorsett, S.; Tibaldo, L.; Tibolla, Omar; Torres, D.; Tosti, G.; Tramacere, A.; Uchiyama, Y.; Usher, T.; Van Etten, A.; Vasileiou, V.; Venter, C.; Vilchez, N.; Vitale, V.; Waite, A.; Wang, P.; Wang, N.; Watters, K.; Weltevrede, P.; Winer, B.; Wood, K.; Ylinen, T.; Ziegler, M. (2010)The dramatic increase in the number of known gamma-ray pulsars since the launch of the Fermi Gamma-ray Space Telescope (formerly GLAST) offers the first opportunity to study a sizable population of these high-energy ...
-
Hou, X.; Smith, D.; Guillemot, L.; Cheung, C.; Cognard, I.; Craig, H.; Espinoza, C.; Johnston, S.; Kramer, M.; Reimer, O.; Reposeur, T.; Shannon, Ryan; Stappers, B.; Weltevrede, P. (2014)© 2014 ESO. Context. GeV gamma-ray pulsations from over 140 pulsars have been characterized using the Fermi Large Area Telescope, enabling improved understanding of the emission regions within the neutron star magnetospheres, ...