TY - JOUR
T1 - KINEMATICS of ULTRA-HIGH-VELOCITY GAS in the EXPANDING MOLECULAR SHELL ADJACENT to the W44 SUPERNOVA REMNANT
AU - Yamada, Masaya
AU - Oka, Tomoharu
AU - Takekawa, Shunya
AU - Iwata, Yuhei
AU - Tsujimoto, Shiho
AU - Tokuyama, Sekito
AU - Furusawa, Maiko
AU - Tanabe, Keisuke
AU - Nomura, Mariko
N1 - Funding Information:
The NRO is a branch of the National Astronomical Observatory of Japan (NAOJ), National Institutes of Natural Sciences. We are grateful to the NRO staff and all the members of the ASTE team for operation of the telescope.
Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - We mapped the ultra-high-velocity feature (the "Bullet") detected in the expanding molecular shell associated with the W44 supernova remnant using the Nobeyama Radio Observatory 45 m telescope and the Atacama Submillimeter Telescope Experiment 10 m telescope. The Bullet clearly appears in the CO J = 1-0, CO J = 3-2, CO J = 4-3, and HCO+ J = 1-0 maps with a compact appearance (0.5 × 0.8 pc2) and an extremely broad-velocity width (ΔV ≃ 100 km s-1). The line intensities indicate that the Bullet has a higher density and temperature than those in the expanding molecular shell. The kinetic energy of the Bullet amounts to 1048.0 erg, which is approximately 1.5 orders of magnitude greater than the kinetic energy shared to the small solid angle of it. Two possible formation scenarios with an inactive isolated black hole are presented.
AB - We mapped the ultra-high-velocity feature (the "Bullet") detected in the expanding molecular shell associated with the W44 supernova remnant using the Nobeyama Radio Observatory 45 m telescope and the Atacama Submillimeter Telescope Experiment 10 m telescope. The Bullet clearly appears in the CO J = 1-0, CO J = 3-2, CO J = 4-3, and HCO+ J = 1-0 maps with a compact appearance (0.5 × 0.8 pc2) and an extremely broad-velocity width (ΔV ≃ 100 km s-1). The line intensities indicate that the Bullet has a higher density and temperature than those in the expanding molecular shell. The kinetic energy of the Bullet amounts to 1048.0 erg, which is approximately 1.5 orders of magnitude greater than the kinetic energy shared to the small solid angle of it. Two possible formation scenarios with an inactive isolated black hole are presented.
KW - ISM: clouds
KW - ISM: kinematics and dynamics
KW - ISM: molecules
KW - ISM: supernova remnants
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U2 - 10.3847/2041-8213/834/1/L3
DO - 10.3847/2041-8213/834/1/L3
M3 - Article
AN - SCOPUS:85009075273
SN - 2041-8205
VL - 834
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 1
M1 - L3
ER -