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相关论文: The Radio Evolution of SN 2001gd

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We present the results of monitoring the radio emission from the Type IIb supernova SN 2001gd between 2002 February 8 and 2002 October 28. Most of the data were obtained using the Very Large Array at the five wavelengths of $\lambda…

We report on 8.4 GHz VLBI observations of SN2001gd in the spiral galaxy NGC5033 made on 26 June 2002 and 8 April 2003. Our data nominally suggests a relatively strong deceleration for the expansion of SN2001gd, but we cannot dismiss the…

We present the results of detailed monitoring of the radio emission from the Type Ic supernova SN 1994I from 3 days after optical discovery on 1994 March 31 until eight years later at age 2927 days on 2002 April 05. The data were mainly…

宇宙学与河外天体物理 · 物理学 2015-05-30 Kurt W. Weiler , Nino Panagia , Christopher Stockdale , Michael Rupen , Richard A. Sramek , Christopher L. Williams

We present extensive radio monitoring of a type IIb supernova (SN IIb), SN 2016gkg during $t \sim$ 8$-$1429 days post explosion at frequencies $\nu \sim$ 0.33$-$25 GHz. The detailed radio light curves and spectra are broadly consistent with…

高能天体物理现象 · 物理学 2022-08-17 A. J. Nayana , Poonam Chandra , Anoop Krishna , G. C. Anupama

We report extensive radio and X-ray observations of SN 2003bg whose spectroscopic evolution shows a transition from a broad-lined Type Ic to a hydrogen-rich Type II and later to a typical hydrogen-poor Type Ibc. We show that the…

天体物理学 · 物理学 2008-11-26 A. M. Soderberg , R. A. Chevalier , S. R. Kulkarni , D. A. Frail

We present our observations of the radio emission from supernova (SN) 1993J, in M 81 (NGC 3031), made with the VLA, from 90 to 0.7 cm, as well as numerous measurements from other telescopes. The combined data set constitutes probably the…

Supernova 2001ig in NGC 7424 has been observed with the Australia Telescope Compact Array at ~2 week intervals since its discovery, making this the best-studied Type IIb radio supernova since SN 1993J. We present radio light curves for…

天体物理学 · 物理学 2007-05-23 S. D. Ryder , E. Sadler , R. Subrahmanyan , K. W. Weiler , N. Panagia , C. Stockdale

Using the Very Large Array, we have detected radio emission from the site of SN 1970G in the Sc galaxy M101. These observations are 31 years after the supernova event, making SN 1970G the longest monitored radio supernova. With flux…

天体物理学 · 物理学 2015-06-24 Christopher J. Stockdale , W. M. Goss , John J. Cowan , R. A. Sramek

We report the discovery and monitoring of radio emission from the Type Ic SN 2002ap ranging in frequency from 1.43 to 22.5 GHz, and in time from 4 to 50 days after the SN explosion. As in most other radio SNe, the radio spectrum of SN…

天体物理学 · 物理学 2015-06-24 E. Berger , S. R. Kulkarni , R. A. Chevalier

We present late time, low frequency observations of SN 2011dh made using the Giant Metrewave Radio Telescope (GMRT). Our observations at $325\ \rm MHz$, $610\ \rm MHz$ and $1280\ \rm MHz$ conducted between $93-421\ \rm days$ after the…

高能天体物理现象 · 物理学 2016-03-23 Naveen Yadav , Alak Ray , Sayan Chakraborti

We present the results of an eight-year long monitoring of the radio emission from the Luminous Infrared Galaxy (LIRG) NGC 7469, using 8.4 GHz Very Large Array (VLA) observations at 0.3'' resolution. Our monitoring shows that the late time…

宇宙学与河外天体物理 · 物理学 2015-05-13 M. A. Perez-Torres , A. Alberdi , L. Colina , J. M. Torrelles , N. Panagia , A. Wilson , E. Kankare , S. Mattila

We present new continuum VLA observations of the nearby Sy 1.5 galaxy NGC 5033, made at 4.9 and 8.4 GHz on 8 April 2003. Combined with VLA archival observations at 1.4 and 4.9 GHz made on 7 August 1993, 29 August 1999, and 31 October 1999,…

天体物理学 · 物理学 2019-08-19 Miguel A. Perez-Torres , Antonio Alberdi

We present VLA radio continuum measurements of SN1993J in M81 at the frequencies of 0.32 (P-band), 1.3 and 1.7 (L-band), 4.9 (C-band), 8.5 (X-band), and 14.9 (U-band) GHz carried out on December 17 and 21, 2000, about 2820 days after the…

天体物理学 · 物理学 2008-11-26 M. A. Perez-Torres , A. Alberdi , J. M. Marcaide

We present the investigations of SN 1993J using low frequency observations with the Giant Meterwave Radio Telescope. We analyze the light curves of SN 1993J at 1420, 610, 325 and 243 MHz during $7.5-10$ years since explosion.The supernova…

天体物理学 · 物理学 2009-11-10 P. Chandra , A. Ray , S. Bhatnagar

Only a handful of supernovae (SNe) have been studied in multi-wavelength from radio to X-rays, starting a few days after explosion. The early detection and classification of the nearby type IIb SN2011dh/PTF11eon in M51 provides a unique…

SN 2001em is a peculiar supernova, originally classified as Type Ib/c. About two years after the SN it was detected in the radio, showing a rising radio flux with an optically thin spectral slope, and it also displayed a large X-ray…

天体物理学 · 物理学 2011-02-11 F. K. Schinzel , G. B. Taylor , C. J. Stockdale , J. Granot , E. Ramirez-Ruiz

We present radio and X-ray observations of the nearby Type IIb Supernova 2013df in NGC4414 from 10 to 250 days after the explosion. The radio emission showed a peculiar soft-to-hard spectral evolution. We present a model in which inverse…

We revisit the exquisite archival radio data for the Type Ic supernova SN 1994I and present a revised model for the SN radio emission and a pilot study that aims to constrain the rate of C-band radio transients within the face-on host…

高能天体物理现象 · 物理学 2016-03-09 Kate D. Alexander , Alicia M. Soderberg , Laura B. Chomiuk

SN 2005kd is among the most luminous supernovae (SNe) to be discovered at X-ray wavelengths. We have re-analysed all good angular resolution (better than $20"$ FWHM PSF) archival X-ray data for SN 2005kd. The data reveal an X-ray light…

高能天体物理现象 · 物理学 2016-08-17 Vikram V. Dwarkadas , C. Romero-Cañizales , R. Reddy , F. E. Bauer

We have studied the growth of the shell-like radio structure of supernova SN1993J in M81 from September 1993 through October 2003 with very-long-baseline interferometry (VLBI) observations at the wavelengths of 3.6, 6, and 18cm. For this…

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