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浏览/检索结果: 共35条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Architecture Design and Ground Performance of Netherlands-China Low-Frequency Explorer 期刊论文  OAI收割 RADIO SCIENCE, 2024, 卷号: 59, 期号: 8 作者:  Karapakula, Sukanth;  Brinkerink, Christiaan;  Vecchio, Antonio;  Pourshaghaghi, Hamid R.;  Dolron, Peter   |  收藏  |  浏览/下载：3/0  |  提交时间：2024/08/26 very low frequency  radio receivers  NCLE  monopole antenna  lunar observatory  radio observations from the Moon   New pulse profile variability associated with a glitch of PSR J0738-4042 期刊论文  OAI收割 Monthly Notices of the Royal Astronomical Society, 2022, 卷号: 519, 期号: 1, 页码: 74-84 作者:  Zhou, S. Q.;  Guegercinoglu, E.   |  收藏  |  浏览/下载：13/0  |  提交时间：2023/06/19 methods: data analysis  stars:neutron  pulsars: general  pulsars:  individual: (PSR J0738-4042)  gamma-ray pulsar  vortex creep  timing observations  neutron-stars  crab  pulsar  inclination angle  braking indexes  magnetic-field  radio  pulsars  state change  Astronomy & Astrophysics   Polarimetric Observations of PSR J0614+2229 and PSR J1938+2213 Using FAST 期刊论文  OAI收割 Astrophysical Journal, 2022, 卷号: 934, 期号: 1, 页码: 57 作者:  Sun, S. N.;  Yan, W. M.;  Wang, N.;  Wang, H. G.;  Wang, S. Q.   |  收藏  |  浏览/下载：14/0  |  提交时间：2023/06/19 time resolution observations  single-pulse observations  radio pulsars  emission  polarization  nulls  model  radiation  component  profile  Astronomy & Astrophysics   Discovery of ammonia (9,6) masers in two high-mass star-forming regions 期刊论文  OAI收割 Astronomy & Astrophysics, 2022, 卷号: 659, 页码: A5 作者:  Yan, Y. T.;  Henkel, C.;  Menten, K. M.;  Gong, Y.;  Ott, J.   |  收藏  |  浏览/下载：7/0  |  提交时间：2023/06/19 masers  ISM: clouds  ISM: individual objects: Cep A  ISM: individual  objects: G34.26+0.15  radio lines: ISM  HIT regions  hot molecular core  h-ii-regions  cepheus-a  nonmetastable ammonia  continuum emission  vla observations  methanol maser  radio-sources  h2o  maser  outflow  Astronomy & Astrophysics   The Intrinsic Structure of Sagittarius A* at 1.3 cm and 7 mm 期刊论文  OAI收割 Astrophysical Journal, 2022, 卷号: 926, 期号: 2, 页码: 108 作者:  Cho, Ilje;  Zhao, Guang-Yao;  Kawashima, Tomohisa;  Kino, Motoki;  Akiyama, Kazunori   |  收藏  |  浏览/下载：14/0  |  提交时间：2023/06/19 magnetically arrested accretion  base-line interferometry  scatter-broadened image  supermassive black-hole  event-horizon  galactic-center  radio-source  vlbi observations  nonthermal electrons  synchrotron emission  Astronomy & Astrophysics   The FAST Galactic Plane Pulsar Snapshot survey: I. Project design and pulsar discoveries 期刊论文  OAI收割 Research in Astronomy and Astrophysics, 2021, 卷号: 21, 期号: 5, 页码: 38107 作者:  Han, J. L.;  Wang, Chen;  Wang, P. F.;  Wang, Tao;  Zhou, D. J.   |  收藏  |  浏览/下载：47/0  |  提交时间：2022/06/30 pulsars  general  extragalactic radio-bursts  high-frequency survey  data-analysis  systems  southern sky survey  11 cm wavelength  magnetic-fields  polarization observations  relativistic gravity  acceleration search  millisecond pulsar  Astronomy & Astrophysics   A parsec-scale faint jet in the nearby changing-look Seyfert galaxy Mrk 590 期刊论文  OAI收割 Monthly Notices of the Royal Astronomical Society, 2021, 卷号: 502, 期号: 1, 页码: L61-L65 作者:  Yang, Jun;  van Bemmel, Ilse;  Paragi, Zsolt;  Komossa, S.;  Yuan, Feng   |  收藏  |  浏览/下载：23/0  |  提交时间：2022/06/30 galaxies: active  galaxies: individual: Mrk 590  galaxies: jets  galaxies: Seyfert  radio continuum: galaxies  active galactic nuclei  observational evidence  numerical-simulation  radio observations  accretion flows  emission  sample  quasar  evolution  core  Astronomy & Astrophysics   Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文  OAI收割 The Astrophysical Journal, 2021, 卷号: 921, 页码: 179 作者:  HXMT   |  收藏  |  浏览/下载：24/0  |  提交时间：2022/02/08 Solar flares  Solar oscillations  Solar ultraviolet emission  Solar  x-ray emission  Solar radio emission  1496  1515  1533  1536  1522  Astrophysics - Solar and Stellar Astrophysics  Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.   Design, operation and performance of the PAON4 prototype transit interferometer 期刊论文  OAI收割 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 493, 期号: 2, 页码: 2965-2980 作者:  Ansari, R.;  Campagne, J. E.;  Charlet, D.;  Moniez, M.;  Pailler, C.   |  收藏  |  浏览/下载：25/0  |  提交时间：2021/12/06 cosmology: observations, large-scale structure of Universe  instrumentation: interferometers  methods: observational  techniques: interferometric  radio continuum: general  radio lines: galaxies   Design, operation and performance of the PAON4 prototype transit interferometer 期刊论文  OAI收割 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 493, 期号: 2, 页码: 2965-2980 作者:  Ansari, R.;  Campagne, J. E.;  Charlet, D.;  Moniez, M.   |  收藏  |  浏览/下载：20/0  |  提交时间：2021/12/06 cosmology: observations, large-scale structure of Universe  instrumentation: interferometers  methods: observational  techniques: interferometric  radio continuum: general  radio lines: galaxies