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Related papers: Multiwavelength Study of on-disk Coronal Hole Jets…

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We have obtained HST FOC f/48 long-slit spectroscopy of the inner 4" of the Narrow Line Region of NGC 1068 between 3500-5400A with a spectral resolution of 1.78A/pixel. At a spatial scale of 0.0287" per pixel these data provide an order of…

Astrophysics · Physics 2009-10-30 D. J. Axon , A. Marconi , A. Capetti , F. D. Macchetto , E. J. Schreier , A. Robinson

A comparison between a Coronal Hole (CH) and the adjacent Quiet-Sun (QS) has been performed using spectroscopic diagnostics of Hinode/ the EUV Imaging Spectrometer (EIS). Coronal funnels play an important role in the formation and…

Solar and Stellar Astrophysics · Physics 2015-11-04 P. Kayshap , D. Banerjee , A. K. Srivastava

To investigate the disk formation and jet launch in protostars is crucial to comprehend the earliest stages of star and planet formation. We aim to constrain the properties of the molecular jet and the disk of the HH 212 protostellar system…

Astrophysics of Galaxies · Physics 2015-09-09 L. Podio , C. Codella , F. Gueth , S. Cabrit , R. Bachiller , A. Gusdorf , C. -F. Lee , B. Lefloch , S. Leurini , B. Nisini , M. Tafalla

Aims. We perform a detailed observational analysis of network jets to understand their kinematics, rotational motion and underlying triggering mechanism(s). We have analyzed the quiet-Sun (QS) data. Methods. IRIS high resolution imaging and…

Solar and Stellar Astrophysics · Physics 2018-08-29 P. Kayshap , K. Murawski , A. K. Srivastava , B. N. Dwivedi

Observations of recurrent explosive events (EEs) with time scale of 3-5 minutes are reported. These EEs have been observed with the Interface Region Imaging Spectrograph (IRIS) and have a spatial dimension of $\sim1.5"$ along the slit. The…

Solar and Stellar Astrophysics · Physics 2015-08-14 G. R. Gupta , Durgesh Tripathi

Strongly Doppler-shifted Stokes $V$ profiles have been detected in the quiet Sun with the IMaX instrument on-board the SUNRISE stratospheric balloon-borne telescope. High velocities are required in order to produce such signals, hence these…

Solar and Stellar Astrophysics · Physics 2015-02-20 F. Rubio da Costa , S. K. Solanki , S. Danilovic , J. Hizberger , V. Martínez-Pillet

Many jets are detected at X-ray wavelengths in the Sun's polar regions, and the ejected plasma along the jets has been suggested to contribute mass to the fast solar wind. From in-situ measurements in the magnetosphere, it has been found…

Solar and Stellar Astrophysics · Physics 2015-08-19 Kyoung-Sun Lee , David H. Brooks , Shinsuke Imada

Using observations with e-MERLIN and the VLA, together with archival data from ALMA, we obtain high-resolution radio images of two binary YSOs: L1551 IRS 5 and L1551 NE, covering a wide range of frequencies from 5 - 336 GHz, and resolving…

As the interface between the Sun's photosphere and corona, the chromosphere and transition region play a key role in the formation and acceleration of the solar wind. Observations from the Interface Region Imaging Spectrograph reveal the…

We present sensitive ($\sigma<10{\rm \mu Jy \, beam^{-1}}$), radio continuum observations using the Australian telescope compact array (ATCA) at frequencies of $6$ and $9$ GHz towards 4 MYSOs. From a previous, less sensitive work, these…

Astrophysics of Galaxies · Physics 2018-09-27 S. J. D. Purser , S. L. Lumsden , M. G. Hoare , N. Cunningham

Context: The earliest evolutionary stages of low-mass protostars are characterised by hot and fast jets which remove angular momentum from the circumstellar disk, thus allowing mass accretion onto the central object. However, the launch…

Astrophysics of Galaxies · Physics 2014-03-05 C. Codella , A. J. Maury , F. Gueth , S. Maret , A. Belloche , S. Cabrit , Ph. Andre'

One of the main science questions of the Solar Orbiter and Parker Solar Probe missions deals with understanding how electrons in the lower solar corona are accelerated and how they subsequently access interplanetary space. We aim to…

Models of jet production in black hole systems suggest that the properties of the accretion disk - such as its mass accretion rate, inner radius, and emergent magnetic field - should drive and modulate the production of relativistic jets.…

High Energy Astrophysical Phenomena · Physics 2015-06-05 J. M. Miller , G. G. Pooley , A. C. Fabian , M. A. Nowak , R. C. Reis , E. M. Cackett , K. Pottschmidt , J. Wilms

Coronal holes are usually defined as dark structures as seen in the extreme ultraviolet and X-ray spectrum which are generally associated with open magnetic field. Deriving reliably the coronal hole boundary is of high interest, as its…

Coronal plumes are long, ray-like, open structures, which have been considered as possible sources for the solar wind. Their origin in the largely unipolar coronal holes has long been a mystery. Earlier spectroscopic and imaging…

Solar and Stellar Astrophysics · Physics 2022-07-06 Pankaj Kumar , Judith T. Karpen , Vadim M. Uritsky , Craig E. Deforest , Nour E. Raouafi , C. Richard DeVore

Recently a second type of spicules was discovered at the solar limb with the Solar Optical Telescope (SOT) onboard the Japanese Hinode spacecraft. These previously unrecognized type II spicules are thin chromospheric jets that are…

Solar and Stellar Astrophysics · Physics 2014-11-20 L. Rouppe van der Voort , J. Leenaarts , B. de Pontieu , M. Carlsson , G. Vissers

We present observations of SO and $\rm SO_2$ lines toward the shocked regions along the L1157 chemically rich outflow, taken in the context of the Seeds Of Life In Space IRAM-NOrthern Extended Millimeter Array Large Program, and supported…

Astrophysics of Galaxies · Physics 2020-06-17 S. Feng , C. Codella , C. Ceccarelli , P. Caselli , A. Lopez-Sepulcre , R. Neri , F. Fontani , L. Podio , B. Lefloch , H. B. Liu , R. Bachiller , S. Viti

We analyze several data sets obtained by Hinode/EIS and find various types of flows during CMEs and EUV jet eruptions. CME-induced dimming regions are found to be characterized by significant blueshift and enhanced line width by using a…

Solar and Stellar Astrophysics · Physics 2012-03-20 Hui Tian , Scott W. McIntosh , Lidong Xia , Jiansen He , Xin Wang

We present observations of rotational lines of H2S, SO and CS performed in comet C/1995 O1 (Hale-Bopp) in March 1997 with the Plateau de Bure interferometer (IRAM). The observations provide informations on the spatial and velocity…

Astrophysics · Physics 2010-05-25 J. Boissier , D. Bockelée-Morvan , N. Biver , J. Crovisier , D. Despois , B. G. Marsden , R. Moreno

We present centimeter and millimeter observations of the NGC 2071 star-forming region performed with the VLA and CARMA. We detected counterparts at 3.6 cm and 3 mm for the previously known sources IRS 1, IRS 2, IRS 3, and VLA 1. All these…

Astrophysics of Galaxies · Physics 2015-06-03 C. Carrasco-Gonzalez , M. Osorio , G. Anglada , P. D'Alessio , L. F. Rodriguez , J. F. Gomez , J. M. Torrelles