The strange case of SN 2011ja and its host

Sayan Chakraborti; Alak Ray; Randall Smith; Stuart Ryder; Naveen Yadav; Firoza Sutaria; Vikram V. Dwarkadas; Poonam Chandra; David Pooley; Rupak Roy

doi:10.1017/S1743921313009733

The strange case of SN 2011ja and its host

Sayan Chakraborti, Alak Ray, Randall Smith, Stuart Ryder, Naveen Yadav, Firoza Sutaria, Vikram V. Dwarkadas, Poonam Chandra, David Pooley, Rupak Roy

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

SN 2001ja was observed twice in three months using the Chandra X-Ray Observatory. The X-ray flux could be due to interaction with the circumstellar medium, perhaps dominated by the reverse shock heated thermal plasma, or from inverse Compton scattering at the forward shock. In both cases, for a steady wind-like circumstellar density profile, the X-ray flux is expected to fall off as a power law or faster. But the flux from the position of SN 2011ja, increased by a factor of three between these observations. In this presentation, we investigated possible reasons, including contamination from other astrophysical sources such as a X-Ray Binary, within the Chandra's resolution, in the host galaxy using our observations, modelling and pre-explosion Chandra/XMM data.

Original language	English
Title of host publication	Supernova Environmental Impacts
Subtitle of host publication	proceedings of the 296th symposium of the International Astronomical Union held at Raichak on Ganges near Calcutta, India January 7-11, 2013
Editors	Alak Ray, Richard McCray
Place of Publication	Cambridge
Publisher	Cambridge University Press (CUP)
Pages	342-343
Number of pages	2
ISBN (Print)	9781107044777
DOIs	https://doi.org/10.1017/S1743921313009733
Publication status	Published - 27 Mar 2014
Externally published	Yes
Event	296th symposium of the International Astronomical Union - Raichak on Ganges, India Duration: 7 Jan 2013 → 11 Jan 2013

Publication series

Name	IAU symposium
Number	296
ISSN (Print)	1743-9213

Conference

Conference	296th symposium of the International Astronomical Union
Country/Territory	India
City	Raichak on Ganges
Period	7/01/13 → 11/01/13

Keywords

circumstellar matter
radio continuum: general
shock waves
Stars: Mass Loss
Supernovae: Individual: SN 2011ja
X-rays: general

Access to Document

10.1017/S1743921313009733

Cite this

Chakraborti, S., Ray, A., Smith, R., Ryder, S., Yadav, N., Sutaria, F., Dwarkadas, V. V., Chandra, P., Pooley, D., & Roy, R. (2014). The strange case of SN 2011ja and its host. In A. Ray, & R. McCray (Eds.), Supernova Environmental Impacts: proceedings of the 296th symposium of the International Astronomical Union held at Raichak on Ganges near Calcutta, India January 7-11, 2013 (pp. 342-343). ( IAU symposium; No. 296). Cambridge University Press (CUP). https://doi.org/10.1017/S1743921313009733

Chakraborti, Sayan ; Ray, Alak ; Smith, Randall ; Ryder, Stuart ; Yadav, Naveen ; Sutaria, Firoza ; Dwarkadas, Vikram V. ; Chandra, Poonam ; Pooley, David ; Roy, Rupak. / The strange case of SN 2011ja and its host. Supernova Environmental Impacts: proceedings of the 296th symposium of the International Astronomical Union held at Raichak on Ganges near Calcutta, India January 7-11, 2013. editor / Alak Ray ; Richard McCray. Cambridge : Cambridge University Press (CUP), 2014. pp. 342-343 ( IAU symposium; 296).

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abstract = "SN 2001ja was observed twice in three months using the Chandra X-Ray Observatory. The X-ray flux could be due to interaction with the circumstellar medium, perhaps dominated by the reverse shock heated thermal plasma, or from inverse Compton scattering at the forward shock. In both cases, for a steady wind-like circumstellar density profile, the X-ray flux is expected to fall off as a power law or faster. But the flux from the position of SN 2011ja, increased by a factor of three between these observations. In this presentation, we investigated possible reasons, including contamination from other astrophysical sources such as a X-Ray Binary, within the Chandra's resolution, in the host galaxy using our observations, modelling and pre-explosion Chandra/XMM data.",

keywords = "circumstellar matter, radio continuum: general, shock waves, Stars: Mass Loss, Supernovae: Individual: SN 2011ja, X-rays: general",

author = "Sayan Chakraborti and Alak Ray and Randall Smith and Stuart Ryder and Naveen Yadav and Firoza Sutaria and Dwarkadas, {Vikram V.} and Poonam Chandra and David Pooley and Rupak Roy",

year = "2014",

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doi = "10.1017/S1743921313009733",

language = "English",

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series = " IAU symposium",

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Chakraborti, S, Ray, A, Smith, R, Ryder, S, Yadav, N, Sutaria, F, Dwarkadas, VV, Chandra, P, Pooley, D & Roy, R 2014, The strange case of SN 2011ja and its host. in A Ray & R McCray (eds), Supernova Environmental Impacts: proceedings of the 296th symposium of the International Astronomical Union held at Raichak on Ganges near Calcutta, India January 7-11, 2013. IAU symposium, no. 296, Cambridge University Press (CUP), Cambridge, pp. 342-343, 296th symposium of the International Astronomical Union, Raichak on Ganges, India, 7/01/13. https://doi.org/10.1017/S1743921313009733

The strange case of SN 2011ja and its host. / Chakraborti, Sayan; Ray, Alak; Smith, Randall; Ryder, Stuart; Yadav, Naveen; Sutaria, Firoza; Dwarkadas, Vikram V.; Chandra, Poonam; Pooley, David; Roy, Rupak.

Supernova Environmental Impacts: proceedings of the 296th symposium of the International Astronomical Union held at Raichak on Ganges near Calcutta, India January 7-11, 2013. ed. / Alak Ray; Richard McCray. Cambridge : Cambridge University Press (CUP), 2014. p. 342-343 ( IAU symposium; No. 296).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AU - Sutaria, Firoza

AU - Dwarkadas, Vikram V.

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AU - Pooley, David

AU - Roy, Rupak

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AB - SN 2001ja was observed twice in three months using the Chandra X-Ray Observatory. The X-ray flux could be due to interaction with the circumstellar medium, perhaps dominated by the reverse shock heated thermal plasma, or from inverse Compton scattering at the forward shock. In both cases, for a steady wind-like circumstellar density profile, the X-ray flux is expected to fall off as a power law or faster. But the flux from the position of SN 2011ja, increased by a factor of three between these observations. In this presentation, we investigated possible reasons, including contamination from other astrophysical sources such as a X-Ray Binary, within the Chandra's resolution, in the host galaxy using our observations, modelling and pre-explosion Chandra/XMM data.

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KW - X-rays: general

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Chakraborti S, Ray A, Smith R, Ryder S, Yadav N, Sutaria F et al. The strange case of SN 2011ja and its host. In Ray A, McCray R, editors, Supernova Environmental Impacts: proceedings of the 296th symposium of the International Astronomical Union held at Raichak on Ganges near Calcutta, India January 7-11, 2013. Cambridge: Cambridge University Press (CUP). 2014. p. 342-343. ( IAU symposium; 296). https://doi.org/10.1017/S1743921313009733

The strange case of SN 2011ja and its host

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