Results 51 to 60 of about 18,261 (272)
Geofluids, 2023 In the Yan’an gas field, southeast of Ordos Basin, the discovered natural gas reserves are 114 billion cubic meters. Highly productive gas reservoirs were formed in paleokarst.
Haiyan Wu +9 more
semanticscholar +1 more source
Evolution of the Spin, Spectrum and Superorbital Period of the Ultraluminous X-Ray Pulsar M51 ULX7 [PDF]
Astrophysical Journal, 2021 M51 ULX7 is among a small group of known ultraluminous X-ray pulsars (ULXPs). The neutron star powering the source has a spin period of 2.8 s, orbits its companion star with a period of 2 days, and a superorbital period of 38 days is evident in its X-ray
M. Brightman +8 more
semanticscholar +1 more source
A Cloud-Scale View of the Molecular Gas Disk in the Whirlpool Galaxy and Beyond [PDF]
EPJ Web of Conferences, 2022 The nearby galaxy M51 (also known as the Whirlpool galaxy) hosts an iconic grand-design spiral pattern and both IRAM facilities conducted the first cloud-scale (∼50 pc resolution) survey of the molecular gas reservoir across a the disk of a massive star ...
Schinnerer Eva +8 more
doaj +1 more source
THE LOCAL RADIO-IR RELATION IN M51 [PDF]
The Astronomical Journal, 2011 50 pages, 13 figures, 5 tables, accepted for publication in ...
Dumas, G. +5 more
openaire +3 more sources
Simulations of the grand design galaxy M51: a case study for analysing tidally induced spiral structure [PDF]
, 2009 We present hydrodynamical models of the grand design spiral M51 (NGC 5194), and its interaction with its companion NGC 5195. Despite the simplicity of our models, our simulations capture the present day spiral structure of M51 remarkably well, and even ...
Agertz +107 more
core +3 more sources
A catalogue of M51 type galaxy associations [PDF]
Astrophysics and Space Science, 2008 A catalog of 232 apparently interacting galaxy pairs of the M51 class is presented. Catalog members were identified from visual inspection of mult-band images in the IRSA archive. The major findings in the compilation of this catalog are (1) A surprisingly low number of the main galaxies in M51 systems are early type spirals and barred spirals.
Russell, David +5 more
openaire +2 more sources
Possible Periodic Dips in the Pulsating Ultraluminous X-Ray Source M51 ULX-7 [PDF]
, 2021 We report the discovery of possible periodic X-ray dips in a pulsating ultraluminous X-ray source, M51 ULX-7, with archival Chandra observations. With ∼20 days of monitoring in the superorbital descending state, we discovered three dips with separations ...
Chin-Ping Hu, Y. Ueda, T. Enoto
semanticscholar +1 more source
The Export Strategy and SMEs Employment Resilience During Slump Periods
Economics: Journal Articles, 2021 The Spanish economy was the most hit by the Great Recession. It suffered a greater decrease in the gross domestic product (GDP) (affecting especially internal demand).
Aparicio-Pérez Daniel +2 more
doaj +1 more source
Distribution and motions of CO in M51 [PDF]
Symposium - International Astronomical Union, 1985 We present results (partly preliminary) of an extensive map (73 positions) of CO (J=1–0) emission in M51 (Fig. 1). The spectra were obtained with the Onsala 20-m antenna (beam size 33″), equipped with a cooled mixer and a 512×1 MHz multichannel receiver. The data are not yet fully analyzed but our preliminary results are as follows:1.
G. Rydbeck, Å. Hjalmarson, O. Rydbeck
openaire +1 more source
Improved distance determination to M51 from supernovae 2011dh and 2005cs [PDF]
, 2012 The appearance of two recent supernovae, SN 2011dh and 2005cs, both in M51, provides an opportunity to derive an improved distance to their host galaxy by combining the observations of both SNe.
A. Pál +43 more
core +3 more sources