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相关论文: The MeerKAT Telescope as a Pulsar Facility: System…

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We have conducted observations of the nearby (11.46 ly) star system Procyon, using MeerKAT's UHF (544-1087 MHz) receivers. We produce full-Stokes time and frequency integrated continuum images, as well as total intensity time series imaging…

太阳与恒星天体物理 · 物理学 2024-10-22 Ian Heywood , Andrew P. V. Siemion , Daniel Czech , Steve Ertel , Jamie Drew , Kyran Grattan , Kevin Wagner , S. Pete Worden

MeerKAT's large number of antennas, spanning 8 km with a densely packed 1 km core, create a powerful instrument for wide-area surveys, with high sensitivity over a wide range of angular scales. The MeerKAT Galaxy Cluster Legacy Survey…

星系天体物理 · 物理学 2022-01-19 K. Knowles , W. D. Cotton , L. Rudnick , F. Camilo , S. Goedhart , R. Deane , M. Ramatsoku , M. F. Bietenholz , M. Brüggen , C. Button , H. Chen , J. O. Chibueze , T. E. Clarke , F. de Gasperin , R. Ianjamasimanana , G. I. G. Józsa , M. Hilton , K. C. Kesebonye , K. Kolokythas , R. C. Kraan-Korteweg , G. Lawrie , M. Lochner , S. I. Loubser , P. Marchegiani , N. Mhlahlo , K. Moodley , E. Murphy , B. Namumba , N. Oozeer , V. Parekh , D. S. Pillay , S. S. Passmoor , A. J. T. Ramaila , S. Ranchod , E. Retana-Montenegro , L. Sebokolodi , S. P. Sikhosana , O. Smirnov , K. Thorat , T. Venturi , T. D. Abbott , R. M. Adam , G. Adams , M. A. Aldera , E. F. Bauermeister , T. G. H. Bennett , W. A. Bode , D. H. Botha , A. G. Botha , L. R. S. Brederode , S. Buchner , J. P. Burger , T. Cheetham , D. I. L. de Villiers , M. A. Dikgale-Mahlakoana , L. J. du Toit , S. W. P. Esterhuyse , G. Fadana , B. L. Fanaroff , S. Fataar , A. R. Foley , D. J. Fourie , B. S. Frank , R. R. G. Gamatham , T. G. Gatsi , M. Geyer , M. Gouws , S. C. Gumede , I. Heywood , M. J. Hlakola , A. Hokwana , S. W. Hoosen , D. M. Horn , J. M. G. Horrell , B. V. Hugo , A. R. Isaacson , J. L. Jonas , J. D. B. Jordaan , A. F. Joubert , R. P. M. Julie , F. B. Kapp , V. A. Kasper , J. S. Kenyon , P. P. A. Kotzé , A. G. Kotze , N. Kriek , H. Kriel , V. K. Krishnan , T. W. Kusel , L. S. Legodi , R. Lehmensiek , D. Liebenberg , R. T. Lord , B. M. Lunsky , K. Madisa , L. G. Magnus , J. P. L. Main , A. Makhaba , S. Makhathini , J. A. Malan , J. R. Manley , S. J. Marais , M. D. J. Maree , A. Martens , T. Mauch , K. McAlpine , B. C. Merry , R. P. Millenaar , O. J. Mokone , T. E. Monama , M. C. Mphego , W. S. New , B. Ngcebetsha , K. J. Ngoasheng , M. T. Ockards , A. J. Otto , A. A. Patel , A. Peens-Hough , S. J. Perkins , N. M. Ramanujam , Z. R. Ramudzuli , S. M. Ratcliffe , R. Renil , A. Robyntjies , A. N. Rust , S. Salie , N. Sambu , C. T. G. Schollar , L. C. Schwardt , R. L. Schwartz , M. Serylak , R. Siebrits , S. K. Sirothia , M. Slabber , L. Sofeya , B. Taljaard , C. Tasse , A. J. Tiplady , O. Toruvanda , S. N. Twum , T. J. van Balla , A. van der Byl , C. van der Merwe , C. L. van Dyk , V. Van Tonder , R. Van Wyk , A. J. Venter , M. Venter , M. G. Welz , L. P. Williams , B. Xaia

The Fermi Large Area Telescope (LAT) provides advantages for radio pulsar searches by enabling efficient target selection. We can confidently point radio telescopes to the positions of Fermi unidentified gamma-ray sources that have a high…

We report the detection of a glitch in the millisecond pulsar (MSP) PSR J0900$-$3144, which is included in the European, MeerKAT and Parkes pulsar timing array experiments. The dataset combines observations from the MeerKAT, Nan\c{c}ay,…

We report the discovery of 164 compact (radius < 1 arcmin) radio rings using MeerKAT 1.3 GHz data from the SARAO MeerKAT Galactic Plane Survey (l=2-60deg, 252-358deg, |b|<1.5deg) and the Galactic Centre mosaic, from a search aimed at…

PSR J0751+1807 is a millisecond pulsar in a circular 6 hr binary system with a helium white dwarf secondary. Through high precision pulse timing measurements with the Arecibo and Effelsberg radio telescopes, we have detected the decay of…

We report on the results of an image-based search for pulsar candidates toward the Galactic bulge. We used mosaic images from the MeerKAT radio telescope, that were taken as part of a 173 deg**2 survey of the bulge and Galactic center of…

We report on the results of multi-frequency follow-up observations of three pulsars (PSRs J0026+6320, J2208+5500 and J2217+5733) discovered with the Giant Metrewave Radio Telescope (GMRT). These observations were carried out with the GMRT…

高能天体物理现象 · 物理学 2019-01-07 Mayuresh P. Surnis , Bhal Chandra Joshi , Maura A. McLaughlin , Krishnakumar M. A. , Manoharan P. K. , Arun Naidu

Modern radio telescopes are revolutionising our understanding of non-thermal phenomena in galaxy clusters, collecting large samples of extended sources with unprecedented sensitivity and angular resolution. In this work, we present novel…

We report on the discovery and localization of fast radio bursts (FRBs) from the MeerTRAP project, a commensal fast radio transient-detection programme at MeerKAT in South Africa. Our hybrid approach combines a coherent search with an…

We present radio observation of a millisecond pulsar PSR J0621+1002 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The pulsar shows periodic pulse intensity modulations for both the first and the third pulse…

高能天体物理现象 · 物理学 2021-06-02 S. Q. Wang , J. B. Wang , N. Wang , Y. Feng , S. B. Zhang , K. J. Lee , D. Li , J. G. Lu , J. T. Xie , D. J. Zhou , L. Zhang

The Small and Large Magellanic Clouds are the only galaxies outside our own in which radio pulsars have been discovered to date. The sensitivity of the MeerKAT radio interferometer offers an opportunity to search for a population of more…

Frequency metrology outperforms any other branch of metrology in accuracy (parts in $10^{-16}$) and small fluctuations ($<10^{-17}$). In turn, among celestial bodies, the rotation speed of millisecond pulsars (MSP) is by far the most stable…

数据分析、统计与概率 · 物理学 2022-02-04 Siyuan Chen , Francois Vernotte , Enrico Rubiola

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we have recorded 10^5 single pulses from PSR J1022+1001. We studied the polarization properties, their energy distribution and their times of arrival. This is only…

Millisecond pulsars (MSPs) have been studied in detail since their discovery in 1982. The integrated pulse profiles of MSPs appear to be stable, which enables precision monitoring of the pulse times of arrival (TOAs). However, for…

高能天体物理现象 · 物理学 2015-05-30 K. Liu , E. F. Keane , K. J. Lee , M. Kramer , J. M. Cordes , M. B. Purver

The Transients and Pulsars with MeerKAT (TRAPUM) project discovered eight binary millisecond pulsars in its first shallow \textit{L}-band survey of unidentified \textit{Fermi} $\gamma$-ray sources using the MeerKAT radio telescope. We…

We present timing solutions for ten pulsars discovered in 350 MHz searches with the Green Bank Telescope. Nine of these were discovered in the Green Bank Northern Celestial Cap survey and one was discovered by students in the Pulsar Search…

We report on full-Stokes L-band observations of 98 MeerKAT calibration sources. Linear polarization is detected in 71 objects above a fractional level of 0.2\%. We identify ten sources with strong fractional linear polarization and low…

星系天体物理 · 物理学 2024-05-24 A. R. Taylor , L. S. Legodi

In an accompanying publication, the MeerKAT Pulsar Timing Array (MPTA) collaboration reports tentative evidence for the presence of a stochastic gravitational-wave background, following observations of similar signals from the European and…