Results 131 to 140 of about 11,793 (207)

Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds. [PDF]

Nat Astron, 2022
Caleb M, Heywood I, Rajwade K, Malenta M, Stappers B, Barr E, Chen W, Morello V, Sanidas S, van den Eijnden J, Kramer M, Buckley D, Brink J, Motta SE, Woudt P, Weltevrede P, Jankowski F, Surnis M, Buchner S, Bezuidenhout MC, Driessen LN, Fender R.   +21 more
europepmc   +1 more source

Preperihelion Volatile Evolution of Interstellar Comet 3I/ATLAS Indicating Significant Contribution from an Extended Source in the Coma

The Astrophysical Journal Letters
Interstellar comets provide rare opportunities for probing the diversity of refractory and volatile inventory around other stars. As the second ever interstellar comet and the third interstellar object, 3I/ATLAS has been the focus of telescopic ...
Juncen Li, Xian Shi, Man-To Hui, Jianchun Shi   +3 more
doaj   +1 more source

Probing a southern hemisphere VLBI Intensive baseline configuration for UT1 determination. [PDF]

Earth Planets Space, 2022
Böhm S, Böhm J, Gruber J, Kern L, McCallum J, McCallum L, McCarthy T, Quick J, Schartner M.   +8 more
europepmc   +1 more source

VLBI astrometry of radio stars to link radio and optical celestial reference frames – II. 11 radio stars

Monthly Notices of the Royal Astronomical Society
ABSTRACT The alignment between the radio-based International Celestial Reference Frame (ICRF) and the optical Gaia Celestial Reference Frame (Gaia–CRF) is critical for multi-waveband astronomy, yet systematic offsets at the optical bright end ($G \lesssim 13$) limit their consistency.
Jingdong Zhang, Bo Zhang, Shuangjing Xu, Xiaofeng Mai, Mark J Reid, Pengfei Jiang, Wen Chen, Fengchun Shu, Jinling Li, Lang Cui, Xingwu Zheng, Yan Sun, Zhaoxiang Qi   +12 more
openaire   +2 more sources

A VLBI Software Correlator for Fast Radio Transients

The Astronomical Journal
One major goal in fast radio burst science is to detect fast radio bursts (FRBs) over a wide field of view without sacrificing the angular resolution required to pinpoint them to their host galaxies.
Calvin Leung, Shion Andrew, Kiyoshi W. Masui, Charanjot Brar, Tomas Cassanelli, Shami Chatterjee, Victoria Kaspi, Kholoud Khairy, Adam E. Lanman, Mattias Lazda, Juan Mena-Parra, Gavin Noble, Aaron B. Pearlman, Mubdi Rahman, Pranav Sanghavi, Vishwangi Shah, (CHIME/FRB Collaboration)   +16 more
doaj   +1 more source

Resolved imaging confirms a radiation belt around an ultracool dwarf. [PDF]

Nature, 2023
Kao MM, Mioduszewski AJ, Villadsen J, Shkolnik EL.   +3 more
europepmc   +1 more source

Dynamical Mass of the Ophiuchus Intermediate-mass Stellar System S1 with DYNAMO-VLBA

The Astronomical Journal
We report dynamical mass measurements of the individual stars in the most luminous and massive stellar member of the nearby Ophiuchus star-forming region, the young tight binary system S1.
Jazmín Ordóñez-Toro, Sergio A. Dzib, Laurent Loinard, Gisela Ortiz-León, Marina A. Kounkel, Josep M. Masqué, S.-N. X. Medina, Phillip A. B. Galli, Trent J. Dupuy, Luis F. Rodríguez, Luis H. Quiroga-Nuñez   +10 more
doaj   +1 more source

The Australian mixed-mode observing program. [PDF]

J Geod, 2022
McCallum L, Chin Chuan L, Krásná H, McCallum J, Böhm J, McCarthy T, Gruber J, Schartner M, Quick J, Rogers A.   +9 more
europepmc   +1 more source

Submillimeter Observations of the White Dwarf Pulsar AR Sco

The Astrophysical Journal
AR Scorpii, the so-called white dwarf (WD) pulsar, contains a rapidly rotating magnetic WD ( P _spin = 117.0564 s) interacting with a cool, red dwarf (RD) companion in a 3.56 hr orbit. It is a strong radio source with an inverted spectral index between 1
Paul E. Barrett, Mark A. Gurwell
doaj   +1 more source

Jupiter Science Enabled by ESA's Jupiter Icy Moons Explorer. [PDF]

Space Sci Rev, 2023
Fletcher LN, Cavalié T, Grassi D, Hueso R, Lara LM, Kaspi Y, Galanti E, Greathouse TK, Molyneux PM, Galand M, Vallat C, Witasse O, Lorente R, Hartogh P, Poulet F, Langevin Y, Palumbo P, Gladstone GR, Retherford KD, Dougherty MK, Wahlund JE, Barabash S, Iess L, Bruzzone L, Hussmann H, Gurvits LI, Santolik O, Kolmasova I, Fischer G, Müller-Wodarg I, Piccioni G, Fouchet T, Gérard JC, Sánchez-Lavega A, Irwin PGJ, Grodent D, Altieri F, Mura A, Drossart P, Kammer J, Giles R, Cazaux S, Jones G, Smirnova M, Lellouch E, Medvedev AS, Moreno R, Rezac L, Coustenis A, Costa M.   +49 more
europepmc   +1 more source