8 papers
Errata: The X-Ray Emission Measure (EM) of the Young Stellar Objects (YSOs) in the Rho Ophiuchi (Rho Oph) and Monoceros R2 Dark Clouds (Mon R2)
Kensuke Imanishi, Makoto Kohno, Katsuji Koyama
Errors were made in the calculations of EMs using the best fit normalizations in XSPEC. Lists of the errors and corrections are as follows. (1)Tables 1, 3, and 4 in ApJ, 557, 747 a…
Diffuse X-rays in the Galactic center region -- The zoo of iron line clumps, non-thermal filaments and hot plasmas --
Aya Bamba, Hiroshi Murakami, Atsushi Senda +3
This paper reports the diffuse X-ray features around the Galactic center observed with Chandra. We confirm the ASCA and Ginga discoveries of the large-scale thin-thermal plasma wit…
Chandra Observations of a New Supernova Remnant AX J1843.8-0352/G28.6-0.1
Katsuji Koyama, Masaru Ueno, Aya Bamba +1
AX J1843.8-0352 is a new X-ray SNR identified to the radio complex G28.6-0.1 with the ASCA satellite. Chandra discovered two distinct components from this SNR: non-thermal and thin…
Chandra Observations of Embedded Young Stellar Objects
Katsuji Koyama
This paper reviews the Chandra deep exposure observations of star forming regions, rho-Ophiuchi, Orion Molecular Clouds 2 and 3, Sagittarius B2 and Monoceros R2. The results are; (…
X-Ray Observations on the Galactic Center Region
Katsuji Koyama
This paper reports on the early Chandra view of the Galactic center (GC) activities. The massive black hole Sgr A* is extremely faint, while more bright diffuse X-ray emission is p…
X-ray source population of the Galactic center region obtained with ASCA
Masaaki Sakano, Katsuji Koyama, Hiroshi Murakami +3
From the ASCA X-ray point-source list in the Galactic center 5x5 degree^2 region, we found the clear correlation between the position of the sources and the absorption. This fact i…