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Based on measurements with the Effelsberg 100-m telescope, a multi-line study of molecular species is presented toward the gravitational lens system PKS1830-211. Obtaining average radial velocities and performing Large Velocity Gradient…

宇宙学与河外天体物理 · 物理学 2015-05-13 C. Henkel , K. M. Menten , M. T. Murphy , N. Jethava , V. V. Flambaum , J. A. Braatz , S. Muller , J. Ott , R. Q. Mao

We present an unbiased molecular line survey toward the carbon-rich circumstellar envelope CIT 6 carried out between 90 and 116 GHz with the Arizona Radio Observatory 12 m telescope. A total of 42 lines assigned to 10 molecular species and…

太阳与恒星天体物理 · 物理学 2023-08-01 Kui-Lu Yang , Yong Zhang , Jian-Jie Qiu , Yi-Na Ao , Xiao-Hu Li

The superconducting properties of CaTSi3 (where T = Pt and Ir) have been investigated using muon spectroscopy. Our muon-spin relaxation results suggest that in both these superconductors time-reversal symmetry is preserved, while muon-spin…

We use high-resolution ground-based observations from the VLT CRIRES instrument in December 2012 to identify sixteen previously undetected H3+ emission lines from Jupiter's ionosphere. These emission lines are located in Jupiter's 5-micron…

地球与行星天体物理 · 物理学 2016-04-20 Rohini S. Giles , Leigh N. Fletcher , Patrick G. J. Irwin , Henrik Melin , Tom S. Stallard

We report on the use of the polarized $^3$He gas filter and neutron resonant enhancement techniques for the measurement of spin-polarized diffuse neutron scattering due to ferromagnetic domains. A CoO/Co exchange biased bilayer was grown on…

材料科学 · 物理学 2007-05-23 F. Radu , A. Vorobiev , J. Major , H. Humblot , K. Westerholt , H. Zabel

We present the complete data set, model and line identification of a survey of the emission from the C-rich protoplanetary nebula CRL 618 performed with the IRAM-30m telescope in the following frequency ranges: 80.25-115.75 GHz,…

天体物理学 · 物理学 2011-02-11 J. R. Pardo , J. Cernicharo , J. R. Goicoechea , M. Guelin , A. Asensio

Aims: Our aims are threefold: a) To compare the $uv$ and mm-wave results; b) to interpret 13CO and 12CO abundances in terms of the physical processes which separately and jointly determine them; c) to interpret observed J=1-0 rotational…

天体物理学 · 物理学 2009-11-13 H. S. Liszt

Transition frequencies and fine-structure splittings of the $2\,{}^3\!S_1 \rightarrow 2\,{}^3\!P_{\!J}$ transitions in helium-like $^{12}\mathrm{C}^{4+}$ were measured by collinear laser spectroscopy on a 1-ppb level. Accuracy is increased…

The study of complex nitrogen (N)-bearing molecules is essential for probing the physical and chemical evolution of star-forming regions. In this paper, we present the identification of rotational emission lines from several complex…

星系天体物理 · 物理学 2026-05-27 Arijit Manna , Sabyasachi Pal , Tapas Baug , Ariful Hoque , Sandip Dutta , Sekhar Sinha , Sushanta Kumar Mondal

We present the results of two Mopra 3-mm spectral line surveys of the Lines of Sight (LOS) toward the Galactic Center (GC) molecular complexes Sgr B2 (LOS+0.693) and Sgr A (LOS-0.11). The spectra covered the frequency ranges of ~77-93 GHz…

We present the results of the observations of the (J,K)=(1,1) and the (J,K)=(2,2) inversion transitions of the NH3 molecule toward a large sample of 40 regions with molecular or optical outflows, using the 37 m radio telescope of the…

太阳与恒星天体物理 · 物理学 2015-05-27 I. Sepúlveda , G. Anglada , R. Estalella , R. López , J. M. Girart , J. Yang

Utilising previous work by the authors on the spin-coupled rotational cross-sections for electron-CN collisions, data for the associated rate coefficients is presented. Data on rotational, fine-structure and hyperfine-structure transition…

化学物理 · 物理学 2015-06-16 Stephen Harrison , Alexandre Faure , Jonathan Tennyson

Methylammonium lead iodide (CH3NH3PbI3) based solar cells have shown impressive power conversion efficiencies of above 20%. However, the microscopic mechanism of the high photovoltaic performance is yet to be fully understood. Particularly,…

材料科学 · 物理学 2016-01-20 T. Chen , B. J. Foley , B. Ipek , M. Tyagi , J. R. D. Copley , C. M. Brown , J. J. Choi , S. -H. Lee

The temperature is a central parameter affecting the chemical and physical properties of dense cores of interstellar clouds and their evolution to star formation. The chemistry and the dust properties are temperature dependent and the…

星系天体物理 · 物理学 2015-06-03 M. Juvela , J. Harju , N. Ysard , T. Lunttila

The data from all observations of RBS 1223 (1RXS J130848.6+212708) conducted by XMM-Newton EPIC pn with the same instrumental setup in 2003-2007 were combined to form spin-phase resolved spectra. A number of complex models of neutron stars…

太阳与恒星天体物理 · 物理学 2011-10-17 V. Hambaryan , V. Suleimanov , A. D. Schwope , R. Neuhaeuser , K. Werner , A. Y. Potekhin

We have mapped the C I 3P1-3P0 line at 492 GHzin three molecular clouds immersed in weak ultraviolet radiation fields, TMC-1, L134N, and IC 5146. In all three clouds, the CI peak TA* ~ 1 K, with very small dispersion. The spatial C I…

天体物理学 · 物理学 2009-10-31 K. Tatematsu , D. T. Jaffe , R. Plume , N. J. Evans , J. Keene

We present a new detailed model of the He I collisional-recombination spectrum based on the most up-to-date atomic data. The model accounts for radiative transfer effects and the influence of a non-zero optical depth in He I lines arising…

星系天体物理 · 物理学 2026-01-21 Oleg Kurichin , Alexandre Ivanchik

We carried out a sensitive survey of C$_2$ and C$_3$ using the EDIBLES data set. We also expanded our searches to C$_4$, C$_5$, and $^{13}$C$^{12}$C isotopologue in the most molecule-rich sightlines. We fit synthetic spectra generated…

We have reinvestigated the A$^1\Pi$$(v=0)$ level of $^{13}$C$^{18}$O\ using new high-resolution spectra obtained via multi-photon laser excitation as well as with synchrotron-based Fourier-transform absorption spectroscopy of the A$^1\Pi…

The 21 cm hyperfine transition of the atomic hydrogen (HI) in ground state is a powerful probe of the neutral gas content of the universe. This radio frequency transition has been used routinely for decades to observe, both in emission and…

星系天体物理 · 物理学 2019-11-26 Preetha Saha , Nirupam Roy , Mukul Bhattacharya