Science Archives Publication System

Suzaku observations of Fe K α line in some Magnetic Cataclysmic Variables

DOI: 10.1016/j.newast.2014.11.006 Bibcode: 2015NewA...37...35E

Eze, R. N. C.

We resolved the 6.4 keV, 6.7 keV and 7.0 keV Fe K α lines in 19 Magnetic Cataclysmic Variables (mCVs) observed with the Suzaku satellite. The 6.7 keV and 7.0 keV emission lines are typically created by collisional excitation in the vicinity of the white dwarf arising from the shock front. The 6.4 keV iron emission line in contrast is formed in equ…

2015 • New Astronomy

Suzaku 3

Prominence Visibility in Hinode/XRT Images

DOI: 10.1088/0004-637X/807/1/97 Bibcode: 2015ApJ...807...97S

Heinzel, P.; Anzer, U.; Jejčič, S. +2 more

In this paper we study the soft X-ray (SXR) signatures of one particular prominence. The X-ray observations used here were made by the Hinode/X-Ray Telescope instrument using two different filters. Both of them have a pronounced peak of the response function around 10 Å. One of them has a secondary smaller peak around 170 Å, which leads to a conta…

2015 • The Astrophysical Journal

Hinode 3

Electrical interferences observed in the Cassini CIRS spectrometer

DOI: 10.1007/s10686-015-9452-3 Bibcode: 2015ExA....39..367C

Flasar, F. Michael; Gorius, Nicolas; Guandique, Ever +6 more

The Composite Infrared Spectrometer (CIRS) carried onboard the Cassini spacecraft has now operated successfully for 17 years, following launch in 1997. Following insertion into Saturnian orbit in July 2004, the instrument has taken data nearly continuously, returning over 100 million interferograms (spectra) to date. Although of generally high qua…

2015 • Experimental Astronomy

Cassini 3

X-Raying the Coronae of HD 155555

DOI: 10.1088/0004-637X/811/1/44 Bibcode: 2015ApJ...811...44L

Singh, K. P.; Lalitha, S.; Kashyap, V. +1 more

We present an analysis of the high-resolution Chandra observation of the multiple system, HD 155555 (an RS Canum Venaticorum; RS CVn type binary system, HD 155555 AB, and its spatially resolved low-mass companion HD 155555 C). This is an intriguing system that shows properties of both an active pre-main-sequence star and a synchronized (main seque…

2015 • The Astrophysical Journal

XMM-Newton 2

Suzaku and Fermi observations of the supernova remnant G1.9 + 0.3

DOI: 10.1016/j.asr.2015.07.018 Bibcode: 2015AdSpR..56.1793G

Gök, Fatma; Ergin, Tülün

We present results from the observation of the supernova remnant (SNR) G1.9 + 0.3, which is the youngest known SNR in the Milky Way, with the X-ray imaging spectrometer (XIS) on board Suzaku. We investigate the nature of the X-ray emission and compare our results with the previous X-ray studies. Additionally, we present the analysis results of the…

2015 • Advances in Space Research

Suzaku 2

Synchrotron emission model of gamma-ray pulsar PSR J2021+3651

DOI: 10.1016/j.newast.2014.08.005 Bibcode: 2015NewA...35...27C

Chkheidze, N.; Babyk, Iu.

In the present paper a self-consistent theory, interpreting the high energy gamma-ray and X-ray observations of pulsar PSR J2021+3651 performed by Fermi-LAT, XMM-Newton and Chandra space telescopes are considered. It is shown that the photon spectrum between 0.1 keV and 25 GeV can be well described by a power-law function with the spectral index Γ…

2015 • New Astronomy

XMM-Newton 2

On the diffuse soft X-ray emission from the nuclear region of M51

DOI: 10.1088/1674-4527/15/12/004 Bibcode: 2015RAA....15.2164L

Mao, Shu-De; Liu, Ji-Ren

We present an analysis of the diffuse soft X-ray emission from the nuclear region of M51 combining both XMM-Newton RGS and Chandra data. Most of the RGS spectrum of M51 can be fitted with a thermal model with a temperature of ∼ 0.5 keV except for the O VII triplet, which is forbidden-line dominated. The Fe L-shell lines peak around the southern cl…

2015 • Research in Astronomy and Astrophysics

XMM-Newton 2

Chandra and XMM-Newton Observations of the Merging Cluster of Galaxies PLCK G036.7+14.9

DOI: 10.1088/0004-637X/804/2/129 Bibcode: 2015ApJ...804..129Z

Dahle, H.; Arnaud, M.; Pointecouteau, E. +13 more

We present Chandra and XMM-Newton observations of PLCK G036.7+14.9 from the Chandra-Planck Legacy Program. The high resolution X-ray observations reveal two close (∼72″ = 193 kpc in projection) subclusters, G036N and G036S, which were not resolved by previous ROSAT, optical, or recent Planck observations. We perform detailed imaging and spectral a…

2015 • The Astrophysical Journal

Planck XMM-Newton 2

The Short Bursts in SGR 1806-20, 1E 1048-5937, and SGR 0501+4516

DOI: 10.1086/680484 Bibcode: 2015PASP..127..211Q

Chen, Yupeng; Zhang, Shu; Ji, Long +4 more

We analyzed temporal and spectral properties, focusing on the short bursts, for three anomalous X-ray pulsars (AXPs) and soft gamma repeaters (SGRs), including SGR 1806-20, 1E 1048-5937 and SGR 0501+4516. Using the data from XMM-Newton, we located the short bursts by Bayesian blocks algorithm. The short bursts' duration distributions for three sou…

2015 • Publications of the Astronomical Society of the Pacific

XMM-Newton 2

Spectroscopic Studies of an Ultraluminous Supersoft X-Ray Source in M81

DOI: 10.1088/2041-8205/802/2/L27 Bibcode: 2015ApJ...802L..27B

Bai, Yu; Wang, Song; Liu, JiFeng

Ultraluminous supersoft X-ray sources (ULSs) exhibit supersoft X-ray spectra with blackbody temperatures below 0.1 keV and bolometric luminosities above 10³⁹ ergs s^-1. In this Letter, we report the first optical spectroscopic observations of a ULS in M81 using the LRIS spectrograph on the Keck I telescope. The detected Balmer…

2015 • The Astrophysical Journal

eHST 2