A Supernova Explosion Inside a Molecular Cloud
Description
W44 is one of the best example of an interacting supernova remnant with its parent molecular cloud. Radio continuum measurements indicate an elongated shell-like structure with a remarkable network of filaments and arcs across the face of this remnant (Giacani et al.1977). Recent near-IR, molecular hydrogen and 4.5 micron images using {Spitzer Space Observatory} show similar filamentary structure suggesting the presence of shocked molecular gas along the synchrotron-emitting radio filaments (Reach et al. 2006). X-ray observations show diffuse emission from the central region of this remnant (Rho et al. 1994). References: Reach, W. T., Rho, J. et al. 2006, AJ, 131, 1479 Rho, J., Petre, R., Schlegel, E. M., Hester, J. 1994, ApJ, 430, 757 Giacani, E. B., Dubner, G. M. et al. 1997, AJ, 113, 1379
A radio image in red color is constructed by the "author" from archival 20cm data by combining data from observations taken in the C and D-array configurations. The original radio image is published by Giacani et al. (1997). An X-ray image in blue color is based on ROSAT observations (Rho et al. 1994). An Infrared image in green color based on SPITZER observations (Reach et al. 2006) shows the distribution of molecular gas as the remnant interacts with its parent cloud.
Creator
Legacy Astronomical Images
Rights
NRAO/AUI/NSF does not hold full copyright for this image. Contact the archivist for details.
Type
Legacy Astronomical Image
Object Name
W44
Telescope
Very Large Array (VLA)
Type of Observation
continuum
Center of Image
RA 18:56:2.000, Dec: 1:21:57.000 (J2000)
Field of View
0.750000 x 0.666667 degrees
Notes
Contact the archivist for a high resolution tif of this image.
Series
Galactic Sources Series
Unit
Supernova Remnants Unit
Citation
Legacy Astronomical Images, “A Supernova Explosion Inside a Molecular Cloud,” NRAO/AUI Archives, accessed November 27, 2024, https://www.nrao.edu/archives/items/show/33525.