Results 71 to 80 of about 11,731 (215)

HAWC J0630+186 Could Not Be Powered by PSR J0630+19

The Astrophysical Journal
3HWC J0630+186 is one of the very-high-energy gamma-ray sources listed in the third High-Altitude Water Cherenkov catalog; however, its origin remains unidentified.
Bojun Wang, Xiaohong Cui, Jiguang Lu, Heng Xu, Renxin Xu   +4 more
doaj   +1 more source

Precision Astrometry with the Very Long Baseline Array: Parallaxes and Proper Motions for 14 Pulsars

, 2009
Astrometry can bring powerful constraints to bear on a variety of scientific questions about neutron stars, including their origins, astrophysics, evolution, and environments.
A. G. Lyne, Arras, Arzoumanian, Beasley, Blazek, Bridle, Briggs, Brisken, Brisken, Brisken, Brisken, Chatterjee, Chatterjee, Chatterjee, Cordes, Cordes, Cornwell, Dame, De Luca, de Zeeuw, Deller, E. B. Fomalont, Faucher-Giguère, Fey, Fomalont, Fomalont, Fomalont, Haffner, Harrison, Helfand, Hoogerwerf, J. M. Cordes, Janka, Kaplan, Kaplan, Kaplan, Kaplan, Kramer, Lai, M. Kramer, Ma, Migliazzo, Ng, Ng, Petrov, Romney, S. Chatterjee, S. E. Thorsett, Socrates, Splaver, Standish, T. J. W. Lazio, Thorsett, Toscano, Verbiest, Vlemmings, W. F. Brisken, W. H. T. Vlemmings, W. M. Goss, Walker, Walker, Walter, Winkler, Zeiger   +63 more
core   +1 more source

Astrometry and geodesy with radio interferometry: experiments, models, results [PDF]

Reviews of Modern Physics, 1998
83 pages, 19 Postscript figures. To be published in Rev. Mod. Phys., Vol.
Sovers, Ojars J., Fanselow, John L., Jacobs, Christopher S.   +2 more
openaire   +2 more sources

JWST imaging of the closest globular clusters—I. Possible infrared excess among white dwarfs in NGC 6397

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundamental astrophysical WD properties and to search for evidence in their colors for (or against ...
L. R. Bedin, D. Nardiello, M. Salaris, M. Libralato, P. Bergeron, A. J. Burgasser, D. Apai, M. Griggio, M. Scalco, J. Anderson, R. Gerasimov, A. Bellini   +11 more
wiley   +1 more source

A Study of Real-time Detection Methods for Solar Radio Burst Identification

The Astrophysical Journal Supplement Series
Solar flares, coronal mass ejections, and other solar radio burst phenomena release substantial amounts of solar radiation energy, resulting in adverse space weather conditions and posing significant hazards in space. Spectrum analysis conducted manually
YongLin Yu, ChengLong Qiao, Shuo Xu, QinZheng Li, YanRui Su, HongQiang Song, FaBao Yan   +6 more
doaj   +1 more source

VLBA images of the precessing jet of LSI+61303

, 2012
Context: In 2004, changes in the radio morphology of the Be/X-ray binary system LSI+61303 suggested that it is a precessing microquasar. In 2006, a set of VLBA observations performed throughout the entire orbit of the system were not used to study its ...
Bosch-Ramon, Casares, Dubus, E. Ros, Fender, Frail, Gregory, Hada, Kaufman Bernadó, L. Zimmermann, Larwood, Lestrade, Lestrade, M. Massi, Markoff, Marscher, Marti, Martí-Vidal, Massi, Massi, Massi, Massi, Massi, Massi, Massi, Paredes, Peracaula, Pradel, Rickett, Romero, Russell, Taylor   +31 more
core   +1 more source

Not So Fast: A New Catalog of Meteor Persistent Trains

Journal of Geophysical Research: Space Physics, Volume 129, Issue 7, July 2024.
Abstract This paper presents the results of a nearly 2‐year long campaign to detect and analyze meteor persistent trains (PTs)—self‐emitting phenomena which can linger up to an hour after their parent meteor. The modern understanding of PTs has been primarily developed from the Leonid storms at the turn of the century; our goal was to assess the ...
L. E. Cordonnier, K. S. Obenberger, J. M. Holmes, G. B. Taylor, D. Vida   +4 more
wiley   +1 more source

An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME

The Astrophysical Journal
The millisecond pulsar J1713+0747 underwent a sudden and significant pulse shape change between 2021 April 16 and 17 (MJDs 59320 and 59321). Subsequently, the pulse shape gradually recovered over the course of several months.
Ross J. Jennings, James M. Cordes, Shami Chatterjee, Maura A. McLaughlin, Paul B. Demorest, Zaven Arzoumanian, Paul T. Baker, Harsha Blumer, Paul R. Brook, Tyler Cohen, Fronefield Crawford, H. Thankful Cromartie, Megan E. DeCesar, Timothy Dolch, Elizabeth C. Ferrara, Emmanuel Fonseca, Deborah C. Good, Jeffrey S. Hazboun, Megan L. Jones, David L. Kaplan, Michael T. Lam, T. Joseph W. Lazio, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, James W. McKee, Dustin R. Madison, Bradley W. Meyers, Chiara M. F. Mingarelli, David J. Nice, Timothy T. Pennucci, Benetge B. P. Perera, Nihan S. Pol, Scott M. Ransom, Paul S. Ray, Brent J. Shapiro-Albert, Xavier Siemens, Ingrid H. Stairs, Daniel R. Stinebring, Joseph K. Swiggum, Chia Min Tan, Stephen R. Taylor, Sarah J. Vigeland, Caitlin A. Witt   +43 more
doaj   +1 more source

Chandra astrometry sets a tight upper limit to the proper motion of SGR 1900+14

, 2008
The soft gamma-ray repeater (SGR) SGR 1900+14 lies a few arcminutes outside the edge of the shell supernova remnant (SNR) G42.8+0.6. A physical association between the two systems has been proposed - for this and other SGR-SNR pairs - based on the ...
A. De Luca, De Luca, Durant, Fuchs, Gaensler, Gaensler, Hurley, Hurley, Hurley, K. Hurley, Kaplan, Kouveliotou, Lorimer, Marsden, Mereghetti, Motch, Muno, P. A. Caraveo, P. Esposito, Skrutskie, Thompson, Thompson, Thompson, Vrba, Woods   +24 more
core   +1 more source

The fireball of November 24, 1970, as the most probable source of the Ischgl meteorite

Meteoritics &Planetary Science, Volume 59, Issue 7, Page 1658-1691, July 2024.
Abstract The discovery of the Ischgl meteorite unfolded in a captivating manner. In June 1976, a pristine meteorite stone weighing approximately 1 kg, fully covered with a fresh black fusion crust, was collected on a mountain road in the high‐altitude Alpine environment.
Maria Gritsevich, Jarmo Moilanen, Jaakko Visuri, Matthias M. M. Meier, Colin Maden, Jürgen Oberst, Dieter Heinlein, Joachim Flohrer, Alberto J. Castro‐Tirado, Jorge Delgado‐García, Christian Koeberl, Ludovic Ferrière, Franz Brandstätter, Pavel P. Povinec, Ivan Sýkora, Florian Schweidler   +15 more
wiley   +1 more source