Supernova light curve models for the bump in the Optical Counterpart of X - Ray Flash 030723

نویسندگان

  • N. Tominaga
  • J. Deng
  • P. A. Mazzali
  • K. Maeda
  • K. Nomoto
  • E. Pian
  • J. Hjorth
  • J. P. U. Fynbo
چکیده

XRF 030723 is the first X-ray flash (XRF) to show in its optical light curve (LC) a bump that has been interpreted as the signature of a supernova (SN). After subtracting the afterglow component from the observed optical LC of the XRF counterpart, the properties of the putative SN are constrained by means of synthetic LCs of core-collapse SNe. For the redshift range z ∼ 0.3 – 1, all possible models require a rather small mass of synthesized 56 Ni, i.e., M (56 Ni) ∼ 0.01 – 0.3 M ⊙. The models used to describe the energetic SNe Ic associated with gamma-ray bursts (SNe 1998bw and 2003dh) are too massive for the observed LC. If the relation between ejected 56 Ni mass and total ejecta mass established from models of various Type Ic SNe also holds for the putative SN in XRF 030723, the ejecta mass is constrained to be ∼ 1 – 3 M ⊙ and the kinetic energy ∼ < 1 × 10 52 erg. This corresponds to a progenitor with 15M ⊙ M MS 25M ⊙. The SN therefore appears to have properties intermediate between a normal SN Ic like SN 1994I and a more energetic object like SN 2002ap.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Light Curve Models for the Supernova in the Optical Counterpart of X - Ray Flash 030723

XRF 030723 is the first X-ray flash (XRF) to show in its optical light curve (LC) a bump that has been interpreted as the signature of a supernova (SN). After subtracting the afterglow component from the observed optical LC of the XRF counterpart, the properties of the SN are constrained by means of synthetic LCs of core-collapse SNe. For the range of redshift suggested for XRF 030723 (z ∼ 0.3 ...

متن کامل

On the Afterglow of the X-ray Flash of 2003 July 23: Photometric Evidence for an Off-axis Gamma-ray Burst with an Associated Supernova?

We present optical and near-infrared follow-up observations of the X-ray flash (XRF) of 2003 July 23. Our observations in the R band cover the temporal range from 4.2 hr to 64 days after the high-energy event. We also present the results of multicolor imaging extending to the K band on three epochs. The light curve of the R-band afterglow the first week after the burst is similar to the light c...

متن کامل

An Hst Search for Supernovae Accompanying X-ray Flashes

We present the results from an Hubble Space Telescope/ACS search for supernovae associated with Xray flashes 020903, 040701, 040812 and 040916. We find strong evidence that XRF020903 (z = 0.25) was associated with a SN 1998bw-like supernova and confirm this using optical spectroscopy at t ∼ 25 days. We find no evidence, however, for SN1998bw-like supernovae associated with the other three event...

متن کامل

Rebrightening of XRF 030723: Further Evidence for a Two-Component Jet in Gamma-Ray Burst

Optical afterglows from two-component jets under various configurations are investigated numerically. Generally, the light curve is characterized by a rapid rebrightening when the observer is off-axis with respect to the narrow component, with the amplitude and peak time depending on detailed parameters. We further show that the optical afterglow of XRF 030723, especially its notable and rapid ...

متن کامل

ar X iv : a st ro - p h / 04 01 02 0 v 1 4 Ja n 20 04 Optical and X - ray Observations of the Afterglow to XRF 030723

The X-ray-flash XRF 030723 was detected by the HETE satellite and rapidly disseminated, allowing for an optical transient to be detected ∼ 1 day after the burst. We discuss observations in the optical with Magellan, which confirmed the fade of the optical transient. In a 2-epoch ToO observation with Chandra, we discovered a fading X-ray source spatially coincident with the optical transient. We...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004