Science Archives Publication System

Hα and EUV Observations of a Partial CME

DOI: 10.1088/0004-637X/804/2/147 Bibcode: 2015ApJ...804..147C

Antolin, Patrick; Christian, Damian J.; Jess, David B. +1 more

We have obtained Hα high spatial and time resolution observations of the upper solar chromosphere and supplemented these with multi-wavelength observations from the Solar Dynamics Observatory (SDO) and the Hinode Extreme-ultraviolet Imaging Spectrometer. The Hα observations were conducted on 2012 February 11 with the Hydrogen-Alpha Rapid Dynamics …

2015 • The Astrophysical Journal

Hinode 5

Exploring the potential X-ray counterpart of the puzzling TeV gamma-ray source HESS J1507-622 with new Suzaku observations

DOI: 10.1093/mnras/stu2746 Bibcode: 2015MNRAS.447.3564E

Eger, P.; Hahn, J.; Domainko, W. F.

The unidentified very high energy (VHE, E > 100 GeV) gamma-ray source HESS J1507-622 seems to not fit into standard models for sources related to young supernova remnants, pulsar wind nebulae, or young stellar populations in general. This is due to its intrinsically extended, but yet compact morphology, coupled with a relative large offset (∼3.…

2015 • Monthly Notices of the Royal Astronomical Society

Suzaku 5

Study of X-ray emission from the old open cluster, M67

DOI: 10.1093/mnras/stv1472 Bibcode: 2015MNRAS.452.3394M

Singh, K. P.; Mooley, K. P.

We present an X-ray analysis of a 4 Gyr old open cluster, M67, using archival XMM-Newton data. The aim of this study was to find new X-ray members of M67, and to use the updated member list for studying X-ray variability, and derive the X-ray luminosity functions (XLFs) of different stellar types and compare them with other star clusters of simila…

2015 • Monthly Notices of the Royal Astronomical Society

XMM-Newton 5

The FERRUM project: Experimental lifetimes and transition probabilities from highly excited even 4d levels in Fe ii

DOI: 10.1051/0004-6361/201525738 Bibcode: 2015A&A...584A..24H

Nilsson, H.; Lundberg, H.; Hartman, H. +1 more

We report lifetime measurements of the 6 levels in the 3d⁶(⁵D)4d e⁶G term in Fe ii at an energy of 10.4 eV, and f-values for 14 transitions from the investigated levels. The lifetimes were measured using time-resolved laser-induced fluorescence on ions in a laser-produced plasma. The high excitation energy, and the…

2015 • Astronomy and Astrophysics

eHST 5

Characteristics of four SPE groups with different origins and acceleration processes

DOI: 10.1002/2015JA021280 Bibcode: 2015JGRA..120.7083K

Cho, K. -S.; Kim, R. -S.; Park, Y. -D. +3 more

Solar proton events (SPEs) can be categorized into four groups based on their associations with flare or CME inferred from onset timings as well as acceleration patterns using multienergy observations. In this study, we have investigated whether there are any typical characteristics of associated events and acceleration sites in each group using 4…

2015 • Journal of Geophysical Research (Space Physics)

SOHO 5

On the black hole masses in ultra-luminous X-ray sources

DOI: 10.1016/j.newast.2014.11.002 Bibcode: 2015NewA...37....1Z

Zhou, Xin-Lin

Ultra-luminous X-ray sources (ULXs) are off-nuclear X-ray sources in nearby galaxies with X-ray luminosities ⩾ 10³⁹ erg s^-1. The measurement of the black hole (BH) masses of ULXs is a long-standing problem. Here we estimate BH masses in a sample of ULXs with XMM-Newton observations using two different mass indicators, the X-r…

2015 • New Astronomy

XMM-Newton 5

Ponding, draining and tilting of the Cerberus Plains; a cryolacustrine origin for the sinuous ridge and channel networks in Rahway Vallis, Mars

DOI: 10.1016/j.icarus.2015.03.005 Bibcode: 2015Icar..253..256R

Balme, M. R.; Conway, S. J.; Gallagher, C. +1 more

Rahway Vallis sits within a shallow basin (the "Rahway basin") in the Cerberus Plains of Mars containing a branching network of channels converging on the basin floor. Using topographic cross-profiles of the channels we have found that they are set within broader, subtly-expressed, valleys. These valleys are shallow (around 15 m vertically compare…

2015 • Icarus

MEx 5

Differential measurement of atmospheric refraction using a telescope with double fields of view

DOI: 10.1088/1674-4527/15/10/011 Bibcode: 2015RAA....15.1742Y

Zhao, Ming; Yu, Yong; Cao, Jian-Jun +2 more

For the sake of advancing theoretical research about atmospheric refraction, the atmospheric refraction observed at lower angles of elevation is still worth analyzing and exploring. In some engineering applications, objects with a larger zenith distance must sometimes be observed. Carrying out observational research on atmospheric refraction at lo…

2015 • Research in Astronomy and Astrophysics

Hipparcos 5

The low energy magnetic spectrometer on Ulysses and ACE response to near relativistic protons

DOI: 10.1051/0004-6361/201525960 Bibcode: 2015A&A...577A..61M

Filipe Maia, Dalmiro Jorge; Gonçalves, Patrícia; Morgado, Bruno +2 more

Aims: We show that the Heliosphere Instrument for Spectra Composition and Anisotropy at Low Energies (HISCALE) on board the Ulysses spacecraft and the Electron Proton Alpha Monitor (EPAM) on board the Advance Composition Explorer (ACE) spacecraft can be used to measure properties for ion populations with kinetic energies in excess of 1 GeV. T…

2015 • Astronomy and Astrophysics

Ulysses 5

A Statistical Study of H I Gas in Nearby Narrow-Line AGN-Hosting Galaxies

DOI: 10.1088/0004-6256/149/1/10 Bibcode: 2015AJ....149...10Z

Wu, Hong; Zhu, Yi-Nan

As a quenching mechanism, active galactic nucleus (AGN) feedback could suppress on going star formation in host galaxies. On the basis of a sample of galaxies selected from the Arecibo Legacy Fast ALFA (ALFALFA) H i survey, the dependence of the H i mass (M_{H i}), stellar mass (M_*), and H i-to-stellar mass ratio (M_{H i}

2015 • The Astronomical Journal

XMM-Newton 5